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• Java URLConnection Timeout

  - by Chris

  I am trying to parse an XML file from an HTTP URL. I want to configure a timeout of 15 seconds if the XML fetch takes longer than that, I want to report a timeout. For some reason, the setConnectTimeout and setReadTimeout do not work. Here's the code: URL url = new URL("http://www.myurl.com/sample.xml"); URLConnection urlConn = url.openConnection(); urlConn.setConnectTimeout(15000); urlConn.setReadTimeout(15000); urlConn.setAllowUserInteraction(false); urlConn.setDoOutput(true); InputStream inStream = urlConn.getInputStream(); InputSource input = new InputSource(inStream); And I am catching the SocketTimeoutException. Thanks Chris

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• PHP, include with parameters

  - by chris

  hi! I have a PHP-file which will be called from a form. So it gets parameters over $_GET. Now I need the exact same functionality of this file, but not in such a form-call. I will include it in normal code with fixed parameters (which normally come from the form). So my file can work with the form AND without it. I know only the way with include and setting the $_GET in front of it. But I am not sure this is the most elegant way (I dont like the idea of setting things like $_GET). any other ways of doing this? br, chris

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• Jquery - Move Div around

  - by Chris

  Hi there guys, I am using Jquery Drag and drop to move divs across a page and this works perfectly. however what i would like is on each one of the div containers is to have a close button which when clicks removes the div from where it is and places it in a pre-defined div at the bottom like a widget gallery. How would this be accomplished? - below is my html.. thanks Chris <div class='column' id='leftcolumn'></div> <div class='column' id='rightcolumn'> <div class='dragbox'> <span class='close'>Close</span> Content In here </div> </div> <div class='column' id='widgetgallery></div>

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• Is there a graphics/game engine that supports PC & Mac?

  - by Chris Masterton

  Is their a graphics that runs on both Mac & PC? I've seen Unity and thats a possibility, I'm wondering if there are any other choices. Ideally I want to port the same C++ game code to both PC & Mac platforms, but let the underlying game/graphics engine take advantage of the appropriate hardware. edit: I'm looking on the level of Torque, Gamebryo & Unreal. A commercial solution is perfectly acceptable. Thanks, Chris

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• Javascript: prototypeal inheritance and the prototype proprity

  - by JanD

  Hi, I have a simple code fragment in JS working with prototype inheritance. function object(o) { function F() {} F.prototype = o; return new F(); } //the following code block has a alternate version var mammal={ color: "brown", getColor: function(){ return this.color; } } var myCat = object(mammal); myCat.meow = function(){return "meow";} that worked fine but adding this: mammal.prototype.kindOf = "predator"; does not. ("mammal.prototype is undefined") Since I guessed that object maybe have no prototype I rewrote it, replacing the var mammal={... block with: function mammal(){ this.color="brown"; this.getColor = function(){return this.color;} } which gave me a bunch of other errors: "Function.prototype.toString called on incompatible object" and if I try to call _myCat.getColor() "myCat.getColor is not a function" Now I am totally confused. After reading Crockford, and Flanagan I did not get the solution for the errors. So it would be great if somebody knows... - why is the prototype undefined in the first example (which is foremost concern; I thought the prototype of explicitly set in the object() function) - why get I these strange errors trying to use the mammal function as prototype object in the object() function?

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• How to merge two single column csv files with linux commands

  - by user1328191

  I was wondering how to merge two single column csv files into one file where the resulting file will contain two columns. file1.csv    first_name    chris    ben    jerry file2.csv    last_name    smith    white    perry result.csv    first_name,last_name    chris,smith    ben,white    jerry,perry Thanks

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• Javascript: prototypal inheritance and the prototype property

  - by JanD

  Hi, I have a simple code fragment in JS working with prototype inheritance. function object(o) { function F() {} F.prototype = o; return new F(); } //the following code block has a alternate version var mammal = { color: "brown", getColor: function() { return this.color; } } var myCat = object(mammal); myCat.meow = function(){return "meow";} that worked fine but adding this: mammal.prototype.kindOf = "predator"; does not. ("mammal.prototype is undefined") Since I guessed that object maybe have no prototype I rewrote it, replacing the var mammal={... block with: function mammal() { this.color = "brown"; this.getColor = function() { return this.color; } } which gave me a bunch of other errors: "Function.prototype.toString called on incompatible object" and if I try to call _myCat.getColor() "myCat.getColor is not a function" Now I am totally confused. After reading Crockford, and Flanagan I did not get the solution for the errors. So it would be great if somebody knows... - why is the prototype undefined in the first example (which is foremost concern; I thought the prototype of explicitly set in the object() function) - why get I these strange errors trying to use the mammal function as prototype object in the object() function? Edit by the Creator of the Question: These two links helped a lot too: Prototypes_in_JavaScript on the spheredev wiki explains the way the prototype property works relativily simple. What it lacks is some try-out code examples. Some good examples are provided by Morris John's Article. I personally find the explanations are not that easy as in the first link, but still very good. The most difficult part even after I actually got it is really not to confuse the .prototype propery with the internal [[Prototype]] of an object.

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• Outlook 2007 Does Not Accept Login Credentials, OWA Webmail Does. Troubleshooting Advice?

  - by Chris

  I am trying to connect Outlook 2007 to Exchange (Hosted Exchange from Rackspace). Soon, I will need to roll this out for our entire office. With the Exchange account added to Outlook, Outlook starts up and asks for the user's username and password. Unfortunately, it doesn't like the password I use for it. I can confirm this username (email address) and password combo works by using Outlook WebMail, and another user (in another network/office) confirmed the Exchange account does work within his Outlook client. In my network/office, I can confirm that an Outlook 2007 client (under Windows 7) can connect to the Hosted Exchange server from Rackspace. However, I have not been able to get Outlook 2007 (under Windows XP SP3) to connect to the very same Exchange server Outlook 2007 (under Windows 7) can connect to. Outlook continuously prompts me for the username and password and does not accept the correct combination. Now, regarding the Outlook client that cannot connect/login to Exchange: The user has full admin rights on the workstation We do not run a domain controller/LDAP The firewall on the workstation has been disabled Real time file scanning in Microsoft Security Essentials has been disabled There are no virus scanning applications that would interface with Outlook or an email server. The Exchange account is setup to run on a newly created Outlook profile The network firewall does not log any blocked attempts A packet capture at the router reveals communication between the workstation and the Exchange server or proxy (though, this is SSL encrypted, so I don't know what the computers are saying) I have applied a fix (Added DWORD value of 0 for DefConnectOpts under HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Outlook\RPC) that was recommended to make RPC function when the workstation does not have a default gateway set. Workstation is configured as DHCP. This fix did nothing, and it may be worth noting the RPC subkey was not present until I added it. RPC service is running on the workstation The program is not running under any compatibility mode. Side note: Outlook 2007 installs with compatibility mode for XP enabled by default in windows 7. Outlook 2007 will not even try to connect to exchange if this compatibility mode is checked. In windows xp, I tried checking compatibility mode for windows 2000, and was unable to connect to exchange as well. Here is the specific configuration I've used in a blank outlook profile: Microsoft Exchange Server: ##MASKED##-MBX-C18.mex07a.mlsrvr.com Username: (Full Email Address: [email protected]) Password: ##MASKED## Outlook Anywhere: Connect to Microsoft Exchange using HTTP Exchange Proxy Settings: Proxy Server: mex07a.emailsrvr.com Check "Connect using SSL only" Under "Only connect to proxy servers...", enter: msstd:mex07a.emailsrvr.com Check "On fast networks, connect using HTTP first, then connect using TCP/IP" Check "On slow networks, connect using HTTP first, then connect using TCP/IP" Proxy authentication settings: Basic Authentication Notes: mex07a.mlsrvr.com and mex07a.emailsrvr.com may look incorrect at first glance, but this is not a typo - these instructions were handed down from rackspace and are confirmed to be working, just not on this workstation. I have tried to use the RpcPing utility but must have been using it wrong. I got as far as "Bad Interface Descriptor". It would seem to me getting Outlook and Exchange to work together would be a breeze, especially since everything is done over port 80 with web services. Unfortunately, the user is stuck with WebMail access only, because Outlook won't accept the Exchange credentials. Do you have any ideas of other things I could try to debug this issue further? Any and all help is greatly appreciated. Thank you! -Chris

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• Tuple conversion to a string

  - by David542

  I have the following list: [('Steve Buscemi', 'Mr. Pink'), ('Chris Penn', 'Nice Guy Eddie'), ...] I need to convert it to a string in the following format: "(Steve Buscemi, Mr. Pink), (Chris Penn, Nice Guy Eddit), ..." I tried doing str = ', '.join(item for item in items) but run into the following error: TypeError: sequence item 0: expected string, tuple found How would I do the above formatting?

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• Javascript: prototypeal inheritance and the prototype property

  - by JanD

  Hi, I have a simple code fragment in JS working with prototype inheritance. function object(o) { function F() {} F.prototype = o; return new F(); } //the following code block has a alternate version var mammal = { color: "brown", getColor: function() { return this.color; } } var myCat = object(mammal); myCat.meow = function(){return "meow";} that worked fine but adding this: mammal.prototype.kindOf = "predator"; does not. ("mammal.prototype is undefined") Since I guessed that object maybe have no prototype I rewrote it, replacing the var mammal={... block with: function mammal() { this.color = "brown"; this.getColor = function() { return this.color; } } which gave me a bunch of other errors: "Function.prototype.toString called on incompatible object" and if I try to call _myCat.getColor() "myCat.getColor is not a function" Now I am totally confused. After reading Crockford, and Flanagan I did not get the solution for the errors. So it would be great if somebody knows... - why is the prototype undefined in the first example (which is foremost concern; I thought the prototype of explicitly set in the object() function) - why get I these strange errors trying to use the mammal function as prototype object in the object() function?

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• Windows 7 client can't connect to CentOS PPTP VPN

  - by Chris

  Have a Macintosh (10.8.2) that connects just fine to a CentOS 6.0 virtual private server (OpenVZ, with PPP added by the host) via PPTP. A Windows 7 Home Premium client (virtualized in Sun's Virtual Box), on the same computer, using the same Ethernet connection, cannot connect to the Linux VPN server. I have iptables disabled (for testing) on the Linux box. I have the Windows firewall turned off. /var/log/messages looks like this, for a Windows connection: Oct 12 18:44:30 production pptpd[1880]: CTRL: Client 66.104.246.168 control connection started Oct 12 18:44:30 production pptpd[1880]: CTRL: Starting call (launching pppd, opening GRE) Oct 12 18:44:30 production pppd[1881]: Plugin /usr/lib/pptpd/pptpd-logwtmp.so loaded. Oct 12 18:44:30 production pppd[1881]: pptpd-logwtmp: $Version$ Oct 12 18:44:30 production pppd[1881]: pppd options in effect: Oct 12 18:44:30 production pppd[1881]: debug#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:44:30 production pppd[1881]: nologfd#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:44:30 production pppd[1881]: dump#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:44:30 production pppd[1881]: plugin /usr/lib/pptpd/pptpd-logwtmp.so#011#011# (from command line) Oct 12 18:44:30 production pppd[1881]: require-mschap-v2#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:44:30 production pppd[1881]: refuse-pap#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:44:30 production pppd[1881]: refuse-chap#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:44:30 production pppd[1881]: refuse-mschap#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:44:30 production pppd[1881]: name pptpd#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:44:30 production pppd[1881]: pptpd-original-ip 66.104.246.168#011#011# (from command line) Oct 12 18:44:30 production pppd[1881]: 115200#011#011# (from command line) Oct 12 18:44:30 production pppd[1881]: lock#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:44:30 production pppd[1881]: local#011#011# (from command line) Oct 12 18:44:30 production pppd[1881]: novj#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:44:30 production pppd[1881]: novjccomp#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:44:30 production pppd[1881]: ipparam 66.104.246.168#011#011# (from command line) Oct 12 18:44:30 production pppd[1881]: proxyarp#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:44:30 production pppd[1881]: 192.168.97.1:192.168.97.10#011#011# (from command line) Oct 12 18:44:30 production pppd[1881]: nobsdcomp#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:44:30 production pppd[1881]: require-mppe-128#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:44:30 production pppd[1881]: mppe-stateful#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:44:30 production pppd[1881]: pppd 2.4.5 started by root, uid 0 Oct 12 18:44:30 production pppd[1881]: Using interface ppp0 Oct 12 18:44:30 production pppd[1881]: Connect: ppp0 <--> /dev/pts/1 (At this point the Windows machine displays a dialog, reading: "Verifying user name and password...") Oct 12 18:45:00 production pppd[1881]: LCP: timeout sending Config-Requests Oct 12 18:45:00 production pppd[1881]: Connection terminated. Oct 12 18:45:00 production pppd[1881]: Modem hangup Oct 12 18:45:00 production pppd[1881]: Exit. Oct 12 18:45:00 production pptpd[1880]: GRE: read(fd=6,buffer=8059660,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs Oct 12 18:45:00 production pptpd[1880]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7) Oct 12 18:45:00 production pptpd[1880]: CTRL: Client 66.104.246.168 control connection finished The Macintosh connecting looks like this in /var/log/messages: Oct 12 18:50:49 production pptpd[1920]: CTRL: Client 66.104.246.168 control connection started Oct 12 18:50:49 production pptpd[1920]: CTRL: Starting call (launching pppd, opening GRE) Oct 12 18:50:49 production pppd[1921]: Plugin /usr/lib/pptpd/pptpd-logwtmp.so loaded. Oct 12 18:50:49 production pppd[1921]: pptpd-logwtmp: $Version$ Oct 12 18:50:49 production pppd[1921]: pppd options in effect: Oct 12 18:50:49 production pppd[1921]: debug#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:50:49 production pppd[1921]: nologfd#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:50:49 production pppd[1921]: dump#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:50:49 production pppd[1921]: plugin /usr/lib/pptpd/pptpd-logwtmp.so#011#011# (from command line) Oct 12 18:50:49 production pppd[1921]: require-mschap-v2#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:50:49 production pppd[1921]: refuse-pap#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:50:49 production pppd[1921]: refuse-chap#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:50:49 production pppd[1921]: refuse-mschap#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:50:49 production pppd[1921]: name pptpd#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:50:49 production pppd[1921]: pptpd-original-ip 66.104.246.168#011#011# (from command line) Oct 12 18:50:49 production pppd[1921]: 115200#011#011# (from command line) Oct 12 18:50:49 production pppd[1921]: lock#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:50:49 production pppd[1921]: local#011#011# (from command line) Oct 12 18:50:49 production pppd[1921]: novj#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:50:49 production pppd[1921]: novjccomp#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:50:49 production pppd[1921]: ipparam 66.104.246.168#011#011# (from command line) Oct 12 18:50:49 production pppd[1921]: proxyarp#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:50:49 production pppd[1921]: 192.168.97.1:192.168.97.10#011#011# (from command line) Oct 12 18:50:49 production pppd[1921]: nobsdcomp#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:50:49 production pppd[1921]: require-mppe-128#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:50:49 production pppd[1921]: mppe-stateful#011#011# (from /etc/ppp/options.pptpd) Oct 12 18:50:49 production pppd[1921]: pppd 2.4.5 started by root, uid 0 Oct 12 18:50:49 production pppd[1921]: Using interface ppp0 Oct 12 18:50:49 production pppd[1921]: Connect: ppp0 <--> /dev/pts/1 Oct 12 18:50:52 production pppd[1921]: MPPE 128-bit stateless compression enabled Oct 12 18:50:52 production pppd[1921]: Unsupported protocol 'IPv6 Control Protocol' (0x8057) received Oct 12 18:50:52 production pppd[1921]: Unsupported protocol 'Apple Client Server Protocol Control' (0x8235) received Oct 12 18:50:52 production pppd[1921]: Cannot determine ethernet address for proxy ARP Oct 12 18:50:52 production pppd[1921]: local IP address 192.168.97.1 Oct 12 18:50:52 production pppd[1921]: remote IP address 192.168.97.10 Oct 12 18:50:52 production pppd[1921]: pptpd-logwtmp.so ip-up ppp0 chris 66.104.246.168 I'm baffled...

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• Geting SelectList to MVC view using AJAX/jQuery

  - by Chris

  Hi all. I have a C# MVC application which is populating a dropdown based on a date selected. Once the date is selected I am sending it to an action via AJAX/jQuery. The action gets a list of items to return for that date. Here is where my problem is. I have done it previously where I render a partial view from the action and pass it the SelectList as the model. However, I really just want to do it inline in the original view, so I'm hoping there is some way I can return the SelectList and from there do some magic Javascript/JQuery to put it into a dropdown. Has anybody ever done this before? If so, what do I on the client end after calling the load() to return the SelectList? I've done something like this previously, when I was just returning a string or other value to be rendered as straight text: $("#returnTripRow").load("/Trip.aspx/GetTripsForGivenDate?date=" + escape(selection)); But I'm not sure how to intercept the data and morph it into am Html.DropDown() call, or equivalent. Any ideas? Thanks, Chris

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• Improve XPath efficiency for repeated, parameterized queries

  - by Chris Allan

  Hi, I am repeatedly performing the following XPath query (though parameterized by 'keywordText') around 40,000 times: String query = SystemGlobal.YAHOO_KEYWORDSSUBNODE + "/" + SystemGlobal.YAHOO_KEYWORDNODE + "[" + SystemGlobal.YAHOO_ATTRKEYPHRASE + "='" + keywordText + "']"; CachedXPathAPI cachedXPathAPI = new CachedXPathAPI(); NodeIterator nl = cachedXPathAPI.selectNodeIterator(doc.getElementsByTagName(SystemGlobal.YAHOO_KEYWORDSROOT).item(0), query); Node n; if ((n = nl.nextNode()) != null) { keyword.setKeywordId(Long.parseLong(cachedXPathAPI.selectSingleNode(n, SystemGlobal.YAHOO_ATTRKEYID).getTextContent())); keyword.setKeyPhrase(cachedXPathAPI.selectSingleNode(n, SystemGlobal.YAHOO_ATTRKEYPHRASE).getTextContent()); keyword.setStatus(mapStatus(cachedXPathAPI.selectSingleNode(n, SystemGlobal.YAHOO_ATTRSTATUS).getTextContent())); keyword.setCampaignId(Long.parseLong(cachedXPathAPI.selectSingleNode(n, "../../" + SystemGlobal.YAHOO_ATTRCAMPAIGNID).getTextContent())); keyword.setAdGroupId(Long.parseLong(cachedXPathAPI.selectSingleNode(n, "../" + SystemGlobal.YAHOO_ATTRADGROUPID).getTextContent())); On the first run of the script, all 40,000 runs of this piece of code will have nl.nextNode() == null, and everything runs quite quickly. However, on the following runs, when nl.nextNode() != null, then things slow down a lot - this takes around an additional 40min to run (whereas the first run takes maybe 1 minute). Oh, and the doc is constructed like so: InputSource in = new InputSource(new FileInputStream(filename)); DocumentBuilderFactory dfactory = DocumentBuilderFactory.newInstance(); dfactory.setNamespaceAware(true); doc = dfactory.newDocumentBuilder().parse(in); I tried including the following lines reportEvaluator = new XPathEvaluatorImpl(reportDoc); reportResolver = reportEvaluator.createNSResolver(reportDoc); and rather creating a NodeIterator, instead creating an XPathResult: XPathResult result = (XPathResult)reportEvaluator.evaluate(query, doc.getElementsByTagName(SystemGlobal.YAHOO_KEYWORDSROOT).item(0), reportResolver, XPathResult.UNORDERED_NODE_ITERATOR_TYPE, null); however this ran even slower Is there a way in which I can speed up the running of this script? I have seen references to precompiled queries, though I haven't seen many actual details. Also, as seen in the code, I am using CachedXPathAPI, though the benefit for this case is not so great. Any help is much appreciated! Chris Allan

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• iPhone SDK : UIImageView - Collapsing animation

  - by chris.o.

  Hi All, I'm trying to animating across the screen a horizontal bar with a color gradient. For simplicity, I chose to make a png of the fully extended bar, assign it to a UIImageView, and (attempt to) animate resizing of it using a UIView animation. The problem is that in the "closed" state of the Image, the portion of the image showing is not the part that I want. The image is arranged so that from L to R, a white to red color gradient occurs. The right side (about 20 pixels) is solid red and is the part I want to show when the bar is "collapsed". I'm trying to extend the image out by about 100 pixels to its full width. I referenced the "Buy Now" button example for my code as it seemed relevant" http://stackoverflow.com/questions/1669804/uibutton-appstore-buy-button-animation My code: [UIView beginAnimations:@"barAnimation" context:nil]; [UIView setAnimationDuration:0.6]; CGRect barFrame = bookBar.bounds; if (fExtendBar) { barFrame.origin.x -= 100; barFrame.size.width += 100; } else { barFrame.origin.x += 100; barFrame.size.width -= 100; } bookBar.frame = barFrame; [UIView commitAnimations]; I feel like this should be possible, maybe by setting an "offsetOfImage" to display in the UIImageView, but I can't seem to make it work. Also, I've noticed that the behavior is kind of consistent with what happens in Interface Builder when you resize an image. Then again, I would think there would be a way to override this behavior programmatically. Any suggestions (including other approaches) are welcome. Thanks, chris.o.

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• How to display two series via Google Chart API?

  - by Chris

  I can't get the two series of numbers to scale together. Here is sample code that you can paste into... http://code.google.com/intl/en/apis/chart/docs/chart_playground.html cht=lxy chs=400x300 chd=t:20,30,40|1,4,2|24,34,44|3,7,1 chds=20,40,1,4,24,44,1,7 chxr=0,20,54,2|1,0,7,1 chxt=x,y chxs=0,ff0000,12,0,lt 1,0000ff,10,1,lt chco=FF0000,00FF00 chdl=Apples Oranges chtt=Some+Values chts=0000ff,24 Translated: chd=t:s,e,r,i,e,s,1|s,e,r,i,e,s,2|...ors:series1,series2,...ore:series1,series2,... chds=<series_1_min>,<series_1_max>,... chxr=<axis_index>,<start_val>,<end_val>,<step>|... The three varying parameters in question are: chd=t:20,30,40|1,4,2|24,34,44|3,7,1 chds=20,40,1,4,24,44,1,7 chxr=0,20,54,2|1,0,7,1 Can anyone get this simple example working? The chart supports multiple series but for some reason I can't scale it so that the values are displayed within scale. Any help appreciated, Chris

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• Ideas for networking project

  - by Chris Thompson

  Hi all, I'm a graduating senior in computer science taking a computer networks class and I'm trying to figure out my final project. I normally am not at a loss for ideas but be it senioritis or straight burn out, I've got nothing. I've done some fun stuff in the past, but I just can't seem to come up with a good idea. Given the mass of brilliance on this site, I figured it would be a good place to request some suggestions. To give you an idea of scope, it's due in about a month and I would consider myself proficient with mobile architectures like Android (although I have no iPhone experience) along with Java, C++, etc. If you can suggest an idea, I'd be happy to make it work in whatever language I know. Like I said, I'm a senior and will be graduating so I'd rather not take on something that would kill me... Also, I'd be happy to make it open source if it's an idea you'd always wanted to work on but didn't have the time to start. Thanks in advance for the help! Chris Edit 1: Thanks so much for the suggestions everyone! Unfortunately I've actually already written a chat client (for a network security class) and I think I'd run into some honor code issues if I did that again, although that's always a great option. I like the game idea and that's actually something I've never attempted before (in any capacity) although given that, I'm a little scared about time...

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• OpenStreetMap Proximity search using mySQL

  - by Chris

  Hi, I'm just playing around with a dataset of my region generated by JOSM. I moved it into a mySQL DB with the 0.6 API scheme using Osmosis and now I'm desperately trying the following: I want to get all streets of a city. AFAIK there is no tag/relation in the OSM data to determine this so I tried it using a proximity search to get all nodes in a radius around a node representing the city center. Most of the time I looked at the approaches here: http://stackoverflow.com/questions/574691/mysql-great-circle-distance-haversine-formula What I got is the following SQL code that should get me the closest 100 nodes around the node with id 36187002 and within a radius of 10km. set @nodeid = 36187002; set @dist = 10; select longitude, latitude into @mylon, @mylat from nodes where id=@nodeid limit 1; SELECT id, ( 6371 * acos( cos( radians(@mylon) ) * cos( radians( latitude ) ) * cos( radians( longitude ) - radians(@mylat) ) + sin( radians(@mylon) ) * sin( radians( latitude ) ) ) ) AS distance FROM nodes HAVING distance < @dist ORDER BY distance LIMIT 0 , 100; Well.. it doesn't work. :( I guess the main problem is that OSM lats/lons are multiplied by 10.000.000 and I don't know how I can correct this function to make it work. Any ideas about this? All solutions/alternatives are very welcome! Have a nice weekend! Chris

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• Migrating to web application with AjaxControlToolkit

  - by Chris

  Hi All, We are currently migrating our ASP.NET website to a web application in Visual Studio 2008. Most of the process has been fairly straight forward, but I have hit one block that is driving me a bit nuts. We are using the AjaxControlToolkit for some functionality, specifically an AutoControlExtender. When this is run locally through VS's development server the extender (dropdown) does not render after the service returns the resultset. However if I deploy the migrated solution to our UAT server the extender functions correctly. I have ensured the Ajax Control Toolkit is properly installed locally on my dev machine (and the dll available in the bin directory), and using debugging have ensured the service is called correctly and runs through without error (which it does). The web application was taken from a server running IIS7. Can anyone confirm if Visual Studio 2008 development server requires a different configuration to IIS 7 (as I believe IIS 6 requires a different configuration to IIS 7), and if there is a resource that provides more info? My own searches have turned up very little in this area. On the other hand, if I am looking in the wrong area any other tips would be appreciated. Thanks Chris

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• python / sqlite - database locked despite large timeouts

  - by Chris Phillips

  Hi, I'm sure I'm missing something pretty obvious, but I can't for the life of me stop my pysqlite scripts crashing out with a database is locked error. I have two scripts, one to load data into the database, and one to read data out, but both will frequently, and instantly, crash depending on what the other is doing with the database at any given time. I've got the timeout on both scripts set to 30 seconds: cx = sqlite.connect("database.sql", timeout=30.0) and think I can see some evidence of the timeouts in that i get what appears to be a timing stamp (e.g 0.12343827e-06 0.1 - and how do I stop that being printed?) dumped occasionally in the middle of my curses formatted output screen, but no delay that ever gets remotely near the 30 second timeout, but still one of the other keeps crashing again and again from this. I'm running RHEL5.4 on a 64 bit 4 cpu HS21 IBM blade, and have heard some mention about issues about multi-threading and am not sure if this might be relevant. Packages in use are sqlite-3.3.6-5 and python-sqlite-1.1.7-1.2.1, and upgrading to newer versions outside of RedHat's official provisions is not a great option for me. Possible, but not desirable due to the environment in general. I have had autocommit=1 on previously on both scripts, but have since disabled on both, and am now cx.commit()ing on the inserting script and not committing on the select script. Ultimately as I only ever have one script actually making any modifications, I don't really see why this locking should ever ever happen. I have noticed that this is significantly worse over time when the database has gotten larger. It was recently at 13mb with 3 equal sized tables, which was about 1 day's worth of data. creating a new file has significantly improved this, which seems understandable, but the timeout ultimately just doesn't seem to be being obeyed. Any pointers very much appreciated. Thanks Chris

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• Repackaging Jasper-Reports into an application specific OSGi bundle, legal or not?

  - by Chris

  Hi, I wanted to ask (probably a silly) question regarding the packaging of existing open-source components as OSGi bundles (more specifically Jasper Reports). I have an application that I am converting from a monolithic jar-hell type architecture to something more moduler and OSGi is my weapon of choice. There are various modules I have in mind but one of the modules is a reporting module. My own reporting module will be a jar file containing my code that should reference a Jasper Reports bundle. Trouble is, Jasper reports depends on far far too many libraries and is quite monolithic in its own right. I therefore wish to build my own Jasper Reports bundle but this is where I start getting confused about the legality of repackaging. I don't plan to re-compile but I do plan to re-bundle removing known items that I do not require. Can anyone offer advice on whether I am permitted to repackage (not recompile or extend) open-source libraries into OSGi bundles without falling foul of 'derivative works' clause of LGPL? I noticed that Groovy seems to offer some monolithic jars that include all dependancies and actually goes so far as to re-arrange the packages of its dependancies so that there are no namespace conflicts. This seems to me to be a violation of the license but if anyone can reassure me that this is legal then I would feel safer about my less intrusive custom-bundling of Jasper reports. Thanks for your time, Chris

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• Is there any way to access files in your source tree in Android?

  - by Chris Thompson

  Hi all, This is a bit unorthodox but I'm trying to figure out if there's a way to access files stored in the src tree of my applications apk in Android. I'm trying to use i-Jetty (Jetty implementation for Android) and rather than use it as a separate application and manually download my war file, I'd rather just bake i-jetty in. However, in order to use (easily) standard html/jsp I need to be able to give it a document root, preferably within my application's apk file. I know Android specifically works to prevent you from accessing (freely) the stuff on the actual system so this may not be possible, but I'm thinking it might be possible to access something within the apk. One option to work around this would be to have all of the files stored in the res directory and then copy them to the sdcard on startup but this wouldn't allow me to automatically remove the files on uninstall. To give you an idea of what I've tried, currently, the html files are stored in org.webtext.android Context rootContext = new Context(server_, "/", Context.SESSIONS); rootContext.setResourceBase("org/webtext/webapp"); Returns a 404 error. final URL url = this.getClassLoader().getResource("org/webtext/webapp"); Context html = new WebAppContext(url.toExternalForm(), "/"); Blows up with a NullPointerException because no URL is returned from the getResource call. Any thoughts would be greatly appreciated! Thanks, Chris

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• SpeechSynthesizer Exception - Please Help

  - by Chris

  Hi. I have the following code: private List<VoiceInfo> GetInstalledVoices(SpeechSynthesizer synthesizer) { CultureInfo currentCulture = CultureInfo.CurrentCulture; var listOfVoiceInfo = from voice in synthesizer.GetInstalledVoices(currentCulture) select voice.VoiceInfo; return listOfVoiceInfo.ToList<VoiceInfo>(); } I then call the code from the following code snippet: var synthesizer = new SpeechSynthesizer(); var installedVoices = GetInstalledVoices(synthesizer); VoiceInfo voice = null; if (installedVoices != null && installedVoices.Count > 0) { voice = installedVoices.FirstOrDefault(); } if (voice != null) { synthesizer.SelectVoice(voice.Name); } The line of code that selects the voice throws the following exception: "Cannot set voice. No matching voice is installed or the voice was disabled." This is being done from within an ASP.NET web application - running on Windows Server 2003 R2. When I run this from within Visual Studio 2008 - everything works fine. I created a simple Console app to perform the same action - then ran it from the Windows Server 2003 machine - and it worked fine. I even modified the code in the Console app to loop through each of the installed voices and select the voice. No problems. However, when doing the same from within the web application, I get the same error. I am beating my head against a wall on this one. ANY help on this would be greatly appreciated. Thanks. Chris

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• Linq to find pair of points with longest length?

  - by Chris

  I have the following code: foreach (Tuple<Point, Point> pair in pointsCollection) { var points = new List<Point>() { pair.Value1, pair.Value2 }; } Within this foreach, I would like to be able to determine which pair of points has the most significant length between the coordinates for each point within the pair. So, let's say that points are made up of the following pairs: (1) var points = new List<Point>() { new Point(0,100), new Point(100,100) }; (2) var points = new List<Point>() { new Point(150,100), new Point(200,100) }; So I have two sets of pairs, mentioned above. They both will plot a horizontal line. I am interested in knowing what the best approach would be to find the pair of points that have the greatest distance between, them, whether it is vertically or horizontally. In the two examples above, the first pair of points has a difference of 100 between the X coordinate, so that would be the point with the most significant difference. But if I have a collection of pairs of points, where some points will plot a vertical line, some points will plot a horizontal line, what would be the best approach for retrieving the pair from the set of points whose difference, again vertically or horizontally, is the greatest among all of the points in the collection? Thanks! Chris

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• Running Magento for multiple clients - single Installaton vs. multiple installations

  - by Chris Hopkins

  Hi There I am looking to set-up a Magento (Community Edition) installation for multiple clients and have researched the matter for a few days now. I can see that the Enterprise Edition has what I need in it, but surprisingly I am not willing to shell out the $12,000 odd yearly subscription. It seems there are a few options available to be but I am worried about the performance I will get out of the various options. Option 1) Single install using AITOC advanced permissions module So this is really what I am after; one installation so that I can update my core files all at the same time and also manage all my store users from one place. The problems here are that I don't know anything about the reliability of this extra product and that I have to pay a bit extra. I am also worried that if I have 10 stores running off this one installation it might all slow down so much and keel over as I have heard allot about Magento's slowness. Module Link: http://www.aitoc.com/en/magentomods_advanced_permissions.html Option 2) Multiple installations of Magento on one server for each shop So here I have 10 Magento installations on one server all running happily away not using any extra money, but I now have 10 separate stores to update and maintain which could be annoying. Also I haven't been able to find a whole lot of other people using this method and when I have they are usually asking how to stop their servers from dying. So this route seems like it could be even worse on my server as I will have more going on on my server but if my server could take it each Magento installation would be simpler and less likely to slow down due to each one having to run 10 shops on its own? Option 3) Use lots of servers and lots of Magento installations I just so do not want to do this. Option 4) Buy Magento Enterprise I do not have the money to do this. So which route is less likely to blow up my server? And does anyone have experience with this holy grail of a module? Thanks for reading and thanks in advance for any help - Chris Hopkins

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• How can I coordinate code review tool and RCS (specifically git)

  - by Chris Nelson

  We're committed to git for code management. We're trying to find a tool that will help us systematize code reviews. We're considering Gerrit and Code Collaborator but would welcome other suggestions. We're having a problem answering the question, "How do we know every commit was reviewed?" (Or "What commits have yet to be reviewed?") One answer would be to submit every commit or every push for review and track incomplete reviews in the review tool. I'm not entirely happy with relying on a another tool -- especially if it's not open source -- to tell us this. What seems to be a better answer is to rely on sign offs in git (e.g., "Signed-off-by: Chris Nelson") and use a hook in the review tool to sign off commits on behalf of the reviewer. And advantage of this is if we use some other review mechanism for some commits, we have just one place to look for results. One problem with this is that we can't require review before push because the review tool is unlikely to have access to the developer's private repository clone to add the sign-off. Any ideas on integrating code review with code management to achieve ease of use and high visibility of unreviewed changes?

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