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  • SQL Join Problem

    - by Harley
    Table one contains ID|Name 1 Mary 2 John Table two contains ID|Color 1 Red 1 Blue 2 Green 2 Blue 2 Black I want to end up with is ID|Name|Red|Blue|Green|Black 1 Mary    Y      Y 2 John            Y        Y       Y Thanks for and help.

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  • Sweave/R - Automatically generating an appendix that contains all the model summaries/plots/data pro

    - by John Horton
    I like the idea of making research available at multiple levels of detail i.e., abstract for the casually curious, full text for the more interested, and finally the data and code for those working in the same area/trying to reproduce your results. In between the actual text and the data/code level, I'd like to insert another layer. Namely, I'd like to create a kind of automatically generated appendix that contains the full regression output, diagnostic plots, exploratory graphs data profiles etc. from the analysis, regardless of whether those plots/regressions etc. made it into the final paper. One idea I had was to write a script that would examine the .Rnw file and automatically: Profile all data sets that are loaded (sort of like the Hmisc(?) package) Summarize all regressions - i.e., run summary(model) for all models Present all plots (regardless of whether they made it in the final version) The idea is to make this kind of a low-effort, push-button sort of thing as opposed to a formal appendix written like the rest of a paper. What I'm looking for is some ideas on how to do this in R in a relatively simple way. My hunch is that there is some way of going through the namespace, figuring out what something is and then dumping into a PDF. Thoughts? Does something like this already exist?

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  • How to create a console application that does not terminate?

    - by John
    Hello, In C++,a console application can have a message handler in its Winmain procedure.Like this: int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) { HWND hwnd; MSG msg; #ifdef _DEBUG CreateConsole("Title"); #endif hwnd = CreateDialog(hInstance, MAKEINTRESOURCE(IDD_DIALOG1), NULL, DlgProc); PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE); while(msg.message != WM_QUIT) { if(PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) { if(IsDialogMessage(hwnd, &msg)) continue; TranslateMessage(&msg); DispatchMessage(&msg); } } return 0; } This makes the process not close until the console window has received WM_QUIT message. I don't know how to do something similar in delphi. My need is not for exactly a message handler, but a lightweight "trick" to make the console application work like a GUI application using threads. So that, for example, two Indy TCP servers could be handled without the console application terminating the process. My question: How could this be accomplished?

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  • How can I receive mail using C#?

    - by John
    I need an open source C# program that can receive SMTP messages and save them in a class (and sends mail, but this is optional since I found a lot of those) Does this program use SMTP or POP3 to receive mail?

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  • What libraries are available to record a user browsing your website for usability testing?

    - by John
    I remember seeing a JavaScript library a long time ago that offered the ability to record where users clicked and moved their mouse on your website, in order to do usability testing. I can't seem to find it anymore. Are there any libraries out there that do something like this? What I'm looking for is something like http://clixpy.com/, where you can include some javascript on a page and get videos of what users do.

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  • What is happening to NCurses and OS X 10.6?

    - by John Velman
    Apparently libncurses...dylib is broken OS X 10.6.3 relative to Mutt, and perhaps other applications, that use ncurses, although it works in 10.6 (as I can attest) and reportedly it works in 10.6.2. Does anyone know if this is a bug or a feature in the view of Apple? If a feature, is there a workaround for people who want to upgrade 10.6..., but also want to use, for example, Mutt? Thanks

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  • CSS3 gradient background set on body doesn't stretch but instead repeats?

    - by John Isaacks
    ok say the content inside the <body> totals 300px high. If I set the background of my <body> using -webkit-gradient or -moz-linear-gradient Then I maximize my window (or just make it taller than 300px) the gradient will be exactly 300px tall (the height of the content) and just repeat to fill the rest of the window. I am assuming this is not a bug since it is the same in both webkit and gecko. But is there a way to make the gradient stretch to fill the window instead of repeat?

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  • How to get items that are and are not in a list

    - by Chris
    I have an IEnumerable, listOfOnes, and an IEnumerable, listOfTwos. Assuming that I can compare objects of V against objects of T, I'd like to find which items are in listOfOnes but, not in listOfTwos. And vice versa. ex: var listOfOnes = new List<One> { new One { name = "chris", type = "user" }, new One { name = "foo", type = "group" }, new One { name = "john", type = "user" }, }; var listOfTwos = new[] { new Two { name = "chris", type = "user" }, new Two { name = "john", type = "user" }, new Two { name = "the Steves", type = "group" } }; var notInTwos; //= listOfOnes.FindDifferences(listOfTwos); //find all objects not in listOfTwos. Should find 'foo'. var notInOnes; //= listOfTwos.FindDifferences(listOfOnes) //find all objects not in listOfOnes. Should find 'the Steves'.

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  • Fixed income data online

    - by John Smith
    I am looking for a resource to download fixed income data online, much like there is access to stock data from yahoo. At the very least I'd like the treasury bonds. I use python, but any help would be appreciated.

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  • PHP convert decimal into fraction and back?

    - by John Isaacks
    I want the user to be able to type in a fraction like: 1/2 2 1/4 3 And convert it into its corresponding decimal, to be saved in MySQL, that way I can order by it and do other comparisons to it. But I need to be able to convert the decimal back to a fraction when showing to the user so basically i need a function that will convert fraction string to decimal: fraction_to_decimal("2 1/4");// return 2.25 and a function that can convert a decimal to a faction string: decimal_to_fraction(.5); // return "1/2" How can I do this? Thanks!

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  • Why are there 3 conflicting OpenCV camera calibration formulas?

    - by John
    I'm having a problem with OpenCV's various parameterization of coordinates used for camera calibration purposes. The problem is that three different sources of information on image distortion formulae apparently give three non-equivalent description of the parameters and equations involved: (1) In their book "Learning OpenCV…" Bradski and Kaehler write regarding lens distortion (page 376): xcorrected = x * ( 1 + k1 * r^2 + k2 * r^4 + k3 * r^6 ) + [ 2 * p1 * x * y + p2 * ( r^2 + 2 * x^2 ) ], ycorrected = y * ( 1 + k1 * r^2 + k2 * r^4 + k3 * r^6 ) + [ p1 * ( r^2 + 2 * y^2 ) + 2 * p2 * x * y ], where r = sqrt( x^2 + y^2 ). Assumably, (x, y) are the coordinates of pixels in the uncorrected captured image corresponding to world-point objects with coordinates (X, Y, Z), camera-frame referenced, for which xcorrected = fx * ( X / Z ) + cx and ycorrected = fy * ( Y / Z ) + cy, where fx, fy, cx, and cy, are the camera's intrinsic parameters. So, having (x, y) from a captured image, we can obtain the desired coordinates ( xcorrected, ycorrected ) to produced an undistorted image of the captured world scene by applying the above first two correction expressions. However... (2) The complication arises as we look at OpenCV 2.0 C Reference entry under the Camera Calibration and 3D Reconstruction section. For ease of comparison we start with all world-point (X, Y, Z) coordinates being expressed with respect to the camera's reference frame, just as in #1. Consequently, the transformation matrix [ R | t ] is of no concern. In the C reference, it is expressed that: x' = X / Z, y' = Y / Z, x'' = x' * ( 1 + k1 * r'^2 + k2 * r'^4 + k3 * r'^6 ) + [ 2 * p1 * x' * y' + p2 * ( r'^2 + 2 * x'^2 ) ], y'' = y' * ( 1 + k1 * r'^2 + k2 * r'^4 + k3 * r'^6 ) + [ p1 * ( r'^2 + 2 * y'^2 ) + 2 * p2 * x' * y' ], where r' = sqrt( x'^2 + y'^2 ), and finally that u = fx * x'' + cx, v = fy * y'' + cy. As one can see these expressions are not equivalent to those presented in #1, with the result that the two sets of corrected coordinates ( xcorrected, ycorrected ) and ( u, v ) are not the same. Why the contradiction? It seems to me the first set makes more sense as I can attach physical meaning to each and every x and y in there, while I find no physical meaning in x' = X / Z and y' = Y / Z when the camera focal length is not exactly 1. Furthermore, one cannot compute x' and y' for we don't know (X, Y, Z). (3) Unfortunately, things get even murkier when we refer to the writings in Intel's Open Source Computer Vision Library Reference Manual's section Lens Distortion (page 6-4), which states in part: "Let ( u, v ) be true pixel image coordinates, that is, coordinates with ideal projection, and ( u ~, v ~ ) be corresponding real observed (distorted) image coordinates. Similarly, ( x, y ) are ideal (distortion-free) and ( x ~, y ~ ) are real (distorted) image physical coordinates. Taking into account two expansion terms gives the following: x ~ = x * ( 1 + k1 * r^2 + k2 * r^4 ) + [ 2 p1 * x * y + p2 * ( r^2 + 2 * x^2 ) ] y ~ = y * ( 1 + k1 * r^2 + k2 * r^4 ] + [ 2 p2 * x * y + p2 * ( r^2 + 2 * y^2 ) ], where r = sqrt( x^2 + y^2 ). ... "Because u ~ = cx + fx * u and v ~ = cy + fy * v , … the resultant system can be rewritten as follows: u ~ = u + ( u – cx ) * [ k1 * r^2 + k2 * r^4 + 2 * p1 * y + p2 * ( r^2 / x + 2 * x ) ] v ~ = v + ( v – cy ) * [ k1 * r^2 + k2 * r^4 + 2 * p2 * x + p1 * ( r^2 / y + 2 * y ) ] The latter relations are used to undistort images from the camera." Well, it would appear that the expressions involving x ~ and y ~ coincided with the two expressions given at the top of this writing involving xcorrected and ycorrected. However, x ~ and y ~ do not refer to corrected coordinates, according to the given description. I don't understand the distinction between the meaning of the coordinates ( x ~, y ~ ) and ( u ~, v ~ ), or for that matter, between the pairs ( x, y ) and ( u, v ). From their descriptions it appears their only distinction is that ( x ~, y ~ ) and ( x, y ) refer to 'physical' coordinates while ( u ~, v ~ ) and ( u, v ) do not. What is this distinction all about? Aren't they all physical coordinates? I'm lost! Thanks for any input!

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  • sml/nj enumerating solutions

    - by john
    i need help enumerating all possible combinations of length n given a list of strings. example, if my list was ["r","b","g"] and int 2 answer: r r, r b, r g, b r, b b, b g, g r, g b, g g,

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  • What is the maximum sandbox size on iPad?

    - by John Alexander
    I'm writing an iPad app that acts as a media player (video and photos). I know there is a 2GB size limit on apps, however is this the size limit on an app when downloaded? Or the limit on the size of your sandbox throughout the life of the app? For example what if my small app later on downloads various media files to its sandbox that put the user over 2GB total (app + downloaded media)? Thanks!

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  • Creating multiple MFC dialogs through COM, strange behaviour

    - by John
    One of our apps has a COM interface which will launch a dialog, e.g: STDMETHODIMP CSomeClass::LaunchDialog(BSTR TextToDisplay) { CDialog *pDlg = new CSomeDialog(TextToDisplay); pDlg->BringWindowToTop(); } For some reason when the COM method is called several times at once by the server, we get odd behaviour: We get multiple dialogs, but only one entry in the taskbar Dialog Z-order is based on order created and can't be changed... the first dialog created is always shown under the 2nd one, 2nd under 3rd, etc, even when you drag them around if N dialogs were created, closing one of them closes it and all the others created afterwards. e.g if 5 dialogsa re created and you close the 3rd one, #3,#4,#5 all get closed. It's somehow like the dialogs are siblings but I don't see anything weird going on. Is it perhaps due to COM, or is this a weird MFC/Win32 issue?

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  • Eclipse and python: library will import in interprer, but not in IDE

    - by John
    I'm running Windows 7, Python 2.6.4 and the latest version of Eclipse. I downloaded the boto library (http://code.google.com/p/boto/) and ran python setup.py install, which created boto-1.9b-py2.6.egg in C:\Python26\Lib\site-packages. Importing a class - say, by doing 'from boto.sqs.connection import SQSConnection' - works fine from the python command line tool. But Eclipse will not find boto, despite the fact that it is using the same python interpreter as I am using when at the command line. I added the library as an external source folder, but that didn't work either. How can I properly import the boto library into Eclipse? Thanks.

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  • Cracking WEP wireless networks [closed]

    - by John
    I have a problem.I am new to linux and would like to know how to crack a WEP and WAP wireless encrypted network.I have been typing the command "airmon-ng" i have even initialized the wlan0 with the following command on Backtrack 4 but it has failed,When I use airmon-ng command, it does not display my wireless driver.SomeOne please xplain to me from scratch.Would really appreciate it.

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  • mod_rewrite/GoDaddy problem

    - by John Deerhake
    Ok, so I really don't know much about mod_rewrite and I'm looking over the apache docs and still not figuring this out. Here is my htaccess (which is mostly just copy & pasted from a site I found): .htaccess in base dir: <IfModule mod_rewrite.c> RewriteEngine on RewriteRule ^$ public/ [L] RewriteRule (.*) public/$1 [L] </IfModule> .htaccess in /public dir: <IfModule mod_rewrite.c> RewriteEngine On RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*)$ index.php?url=$1 [PT,L] </IfModule> Basically I'm using the above htaccess files on my current test server and it works great and exactly like I would expect (everything gets seamlessly redirected to public dir). Now when I throw this on my GoDaddy hosting account i get "Internal Server Errror". I've done some searching and I'm fairly certain I should be able to use mod_rewrite with GoDaddy. I suspect this is because I'm not using the base directory to host the site in. The site is in in the folder html/myapp/ (where html is the base directory) and i have a subdomain set up in GoDaddy to look in that folder.

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  • phpbb template comment conditional

    - by john
    I see in PHPBB they use conditional statements inside their html, or xhtml, if you dont know what I mean here is a snippet: <!-- IF MODERATORS --> <p class="moderators"><!-- IF S_SINGLE_MODERATOR -->{L_MODERATOR}<!-- ELSE -->{L_MODERATORS}<!-- ENDIF -->: {MODERATORS}</p> <!-- ENDIF --> <!-- IF U_MCP --> <p class="linkmcp">[ <a href="{U_MCP}">{L_MCP}</a> ]</p> <!-- ENDIF --> Is there an explanation on how to implement this in my own site, as it would be very useful and clean up a lot of code.

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  • Casting an object using 'as' returns null: myObject = newObject as MyObject; // null

    - by John Russell
    I am trying to create a custom object in AS3 to pass information to and from a server, which in this case will be Red5. In the below screenshots you will see that I am able to send a request for an object from as3, and receive it successfully from the java server. However, when I try to cast the received object to my defined objectType using 'as', it takes the value of null. It is my understanding that that when using "as" your checking to see if your variable is a member of the specified data type. If the variable is not, then null will be returned. This screenshot illustrates that I am have successfully received my object 'o' from red5 and I am just about to cast it to the (supposedly) identical datatype testObject of LobbyData: However, when testObject = o as LobbyData; runs, it returns null. :( Below you will see my specifications both on the java server and the as3 client. I am confident that both objects are identical in every way, but for some reason flash does not think so. I have been pulling my hair out for a long time, does anyone have any thoughts? AS3 Object: import flash.utils.IDataInput; import flash.utils.IDataOutput; import flash.utils.IExternalizable; import flash.net.registerClassAlias; [Bindable] [RemoteClass(alias = "myLobbyData.LobbyData")] public class LobbyData implements IExternalizable { private var sent:int; // java sentinel private var u:String; // red5 username private var sen:int; // another sentinel? private var ui:int; // fb uid private var fn:String; // fb name private var pic:String; // fb pic private var inb:Boolean; // is in the table? private var t:int; // table number private var s:int; // seat number public function setSent(sent:int):void { this.sent = sent; } public function getSent():int { return sent; } public function setU(u:String):void { this.u = u; } public function getU():String { return u; } public function setSen(sen:int):void { this.sen = sen; } public function getSen():int { return sen; } public function setUi(ui:int):void { this.ui = ui; } public function getUi():int { return ui; } public function setFn(fn:String):void { this.fn = fn; } public function getFn():String { return fn; } public function setPic(pic:String):void { this.pic = pic; } public function getPic():String { return pic; } public function setInb(inb:Boolean):void { this.inb = inb; } public function getInb():Boolean { return inb; } public function setT(t:int):void { this.t = t; } public function getT():int { return t; } public function setS(s:int):void { this.s = s; } public function getS():int { return s; } public function readExternal(input:IDataInput):void { sent = input.readInt(); u = input.readUTF(); sen = input.readInt(); ui = input.readInt(); fn = input.readUTF(); pic = input.readUTF(); inb = input.readBoolean(); t = input.readInt(); s = input.readInt(); } public function writeExternal(output:IDataOutput):void { output.writeInt(sent); output.writeUTF(u); output.writeInt(sen); output.writeInt(ui); output.writeUTF(fn); output.writeUTF(pic); output.writeBoolean(inb); output.writeInt(t); output.writeInt(s); } } Java Object: package myLobbyData; import org.red5.io.amf3.IDataInput; import org.red5.io.amf3.IDataOutput; import org.red5.io.amf3.IExternalizable; public class LobbyData implements IExternalizable { private static final long serialVersionUID = 115280920; private int sent; // java sentinel private String u; // red5 username private int sen; // another sentinel? private int ui; // fb uid private String fn; // fb name private String pic; // fb pic private Boolean inb; // is in the table? private int t; // table number private int s; // seat number public void setSent(int sent) { this.sent = sent; } public int getSent() { return sent; } public void setU(String u) { this.u = u; } public String getU() { return u; } public void setSen(int sen) { this.sen = sen; } public int getSen() { return sen; } public void setUi(int ui) { this.ui = ui; } public int getUi() { return ui; } public void setFn(String fn) { this.fn = fn; } public String getFn() { return fn; } public void setPic(String pic) { this.pic = pic; } public String getPic() { return pic; } public void setInb(Boolean inb) { this.inb = inb; } public Boolean getInb() { return inb; } public void setT(int t) { this.t = t; } public int getT() { return t; } public void setS(int s) { this.s = s; } public int getS() { return s; } @Override public void readExternal(IDataInput input) { sent = input.readInt(); u = input.readUTF(); sen = input.readInt(); ui = input.readInt(); fn = input.readUTF(); pic = input.readUTF(); inb = input.readBoolean(); t = input.readInt(); s = input.readInt(); } @Override public void writeExternal(IDataOutput output) { output.writeInt(sent); output.writeUTF(u); output.writeInt(sen); output.writeInt(ui); output.writeUTF(fn); output.writeUTF(pic); output.writeBoolean(inb); output.writeInt(t); output.writeInt(s); } } AS3 Client: public function refreshRoom(event:Event) { var resp:Responder=new Responder(handleResp,null); ncLobby.call("getLobbyData", resp, null); } public function handleResp(o:Object):void { var testObject:LobbyData=new LobbyData; testObject = o as LobbyData; trace(testObject); } Java Client public LobbyData getLobbyData(String param) { LobbyData lobbyData1 = new LobbyData(); lobbyData1.setSent(5); lobbyData1.setU("lawlcats"); lobbyData1.setSen(5); lobbyData1.setUi(5); lobbyData1.setFn("lulz"); lobbyData1.setPic("lulzagain"); lobbyData1.setInb(true); lobbyData1.setT(5); lobbyData1.setS(5); return lobbyData1; }

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  • Strange problem with SEAM stateful session bean

    - by John
    Hi, I've got a staeful session bean. @Scope(ScopeType.SESSION) @Name("chuckNorrisBean") public class ChuckNorrisBean implements Serializable, ChuckNorris with some function public void roundHouseKick() { ... } interface @Local public interface ChuckNorris { public void roundHouseKick() { ... } } and calling them on a jsf .xhtml page using #{chuckNorrisBean.roundHouseKick} which works perfectly fine. However if I add the @Stateful annotation to the bean so it becomes @Stateful @Scope(ScopeType.SESSION) @Name("chuckNorrisBean") public class ChuckNorrisBean implements Serializable, ChuckNorris and the page will load with exceptions complainig about Exception during request processing:Caused by javax.servlet.ServletException with message: "#{chuckNorrisBean.roundHouseKick}: javax.el.MethodNotFoundException: //localhost/universe/earth.xhtml @41,65 action= "#{chuckNorrisBean.roundHouseKick}": Method not found: ChuckNorrisBean:a6gkg-w6das4-g8wmgh0y-1-g8woy0wo-4b.roundHouseKick()" Any advice on what might've went wrong with my chuckNorrisBean? The system is built on SEAM/richfaces. Thanks!

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  • Convert json to a string using jquery

    - by becomingGuru
    I have a nested json. I want to post it as a form input value. But, seems like jquery puts "Object object" string into the value. It seems easier to pass around the string and convert into the native form I need, than dealing with json as I don't need to change anything once it is generated. What is the simplest way to convert a json var json = { "firstName": "John", "lastName": "Smith", "age": 25, "address": { "streetAddress": "21 2nd Street", "city": "New York", "state": "NY", "postalCode": "10021" }, "phoneNumber": [ { "type": "home", "number": "212 555-1234" }, { "type": "fax", "number": "646 555-4567" } ], "newSubscription": false, "companyName": null }; into its string form? var json = '{ "firstName": "John", "lastName": "Smith", "age": 25, "address": { "streetAddress": "21 2nd Street", "city": "New York", "state": "NY", "postalCode": "10021" }, "phoneNumber": [ { "type": "home", "number": "212 555-1234" }, { "type": "fax", "number": "646 555-4567" } ], "newSubscription": false, "companyName": null }' Following doesn't do what I need: Json.stringify()

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