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  • SQL SERVER Spatial Data

    - by Sam
    Hi All, I am struggeling finding an effectient way to find a distance between a Point that interetcts a polygon and the border of that polygon. I was able to use the STDistance comparing the point to every point that made up the polygon but that is taking a lot of time. Using SPatial indexed wasnt much helpful because the STDistance is not part of any constraint and even when I did put the constraint, the index didnt help much. I appreciate any feedback. Thanks.

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  • how to use subsonic generated files?

    - by sam
    Hi Guys, I have Visual 2010, I am trying to generate dal from my database. I create a classlibrary project I add reference to Subsonic I add reference to mysql create generated file in directory I add a App.config file and fill it as this: I create the external tools button and run it, it generates the CS files, but doesnt appear in generate files, what to do next to use these files in my application?? thanks

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  • How to check if a thread is busy in C#?

    - by Sam
    I have a Windows Forms UI running on a thread, Thread1. I have another thread, Thread2, that gets tons of data via external events that needs to update the Windows UI. (It actually updates multiple UI threads.) I have a third thread, Thread3, that I use as a buffer thread between Thread1 and Thread2 so that Thread2 can continue to update other threads (via the same method). My buffer thread, Thread3, looks like this: public class ThreadBuffer { public ThreadBuffer(frmUI form, CustomArgs e) { form.Invoke((MethodInvoker)delegate { form.UpdateUI(e); }); } } What I would like to do is for my ThreadBuffer to check whether my form is currently busy doing previous updates. If it is, I'd like for it to wait until it frees up and then invoke the UpdateUI(e). I was thinking about either: a) //PseudoCode while(form==busy) { // Do nothing; } form.Invoke((MethodInvoker)delegate { form.UpdateUI(e); }); How would I check the form==busy? Also, I am not sure that this is a good approach. b) Create an event in form1 that will notify the ThreadBuffer that it is ready to process. // psuedocode List<CustomArgs> elist = new List<CustomArgs>(); public ThreadBuffer(frmUI form, CustomArgs e) { from.OnFreedUp += from_OnFreedUp(); elist.Add(e); } private form_OnFreedUp() { if (elist.count == 0) return; form.Invoke((MethodInvoker)delegate { form.UpdateUI(elist[0]); }); elist.Remove(elist[0]); } In this case, how would I write an event that will notify that the form is free? and c) an other ideas?

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  • Add to exisiting db values, rather than overwrite - PDO

    - by sam
    Im trying to add to existing decimal value in table, for which im using the sql below: UPDATE Funds SET Funds = Funds + :funds WHERE id = :id Im using a pdo class to handle my db calls, with the method below being used to update the db, but i couldnt figure out how to amend it to output the above query, any ideas ? public function add_to_values($table, $info, $where, $bind="") { $fields = $this->filter($table, $info); $fieldSize = sizeof($fields); $sql = "UPDATE " . $table . " SET "; for($f = 0; $f < $fieldSize; ++$f) { if($f > 0) $sql .= ", "; $sql .= $fields[$f] . " = :update_" . $fields[$f]; } $sql .= " WHERE " . $where . ";"; $bind = $this->cleanup($bind); foreach($fields as $field) $bind[":update_$field"] = $info[$field]; return $this->run($sql, $bind); }

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  • Neural network input data, cartesian plane x/y coordinates, correlate with Handwriting.

    - by Sam
    I very curious about making a handwriting recognition application in a web browser. Users draw a letter, ajax sends the data to the server, neural network finds the closest match, and returns results. So if you draw an a, the first result should be an a, then o, then e, something like that. I'm don't know much about neural networks. What kinda data would I need to pass to the NN. Could it be an array of the x/y coordinates where the user has drawn on a pad. Or what type of data is the neural network expecting or would produce the best results for handwriting?

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  • Use this. to access internal class members?

    - by Sam
    On the internet I see a lot of code which uses this. to access local members of a class, like this: private String _whatever; public String Whatever { get { return this._whatever; } set { this._whatever = value; } } public void DoSomething() { String s = this.Whatever; this.DoSomething(); } (don't expect the code to do something sensible. I just wanted to show a few different uses for "this.") I wonder why to do this? To add more clarity to the source? Or is it just a waste of space?

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  • Objects leaking immediately from allocation using either new or [[Object alloc] init];

    - by Sam
    While running Instruments to find leaks in my code, after I've loaded a file and populate an NSMutableArray with new objects, leaks pop up! I am correctly releasing the objects. Sample code below: //NSMutableArray declared as a retained property in the parent class if(!mutableArray) mutableArray = [[NSMutableArray alloc] initWithCapacity:objectCount]; else [mutableArray removeAllObjects]; //Iterates through the read in data and populate the NSMutableArray for(int i = 0; i < objectCount; i++){ //Initializes a new object with data MyObject *object = [MyObject new]; //Adds the object to the mutableArray [mutableArray addObject:object]; //Releases the object [object release]; } I get a number of leaks from Instruments terminating at the addition of the 'object' into the 'mutableArray', but also including the allocation of the 'object' and the 'mutableArray'. I don't get it. Not to mention, this is happening on the first call of the enclosing method so the allocation of the NSMutableArray is being hit in the logic block, not the 'removeAllObjects' selector. Lastly, does Core Foundation have a major bug in it that randomly creates CFStrings and mismanages their memory? My code does not even use those, nor do the leaks where they occur have anything to do with my code. Almost all of my applications so far deal with OpenGL (in case anyone knows of a threading issue that arises from trying to synch the backend of the program with the front end of displaying the contents of an NSOpenGLView class or whatever it is).

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  • AJAX Div Retrieval every 60 seconds

    - by Sam
    Hello everyone! What I would like to do is retrieve the contents of a PHP file and insert it into a div every 60 seconds, basically refreshing the dynamic div. I've come up with the following code so far, however it doesn't seem to be working. The code is just like this, nothing extra, apart from the MYSQL login. PHP to grab: <?php $time = date("m/d/Y h:i:s a", time()); mysql_query("UPDATE djs SET requesttime='{$time}' WHERE username='{$djs['username']}'") or die(mysql_error()); $request_db = mysql_query("SELECT * FROM requests WHERE haveplayed='0'") or die(mysql_error()); echo "<table style=\"border:1px solid;width:99%;margin-left:auto;margin-right:auto;\" border=\"1\">"; echo "<tr><th>Title</th><th>Artist</th><th>Dedicated To...</th></tr>"; while($request = mysql_fetch_array( $request_db )) { echo "<tr><td style=\"width:33%;padding:1px;\">"; echo $request['SongName']; echo "</td><td style=\"width:33%;\">"; echo $request['Artist']; echo "</td><td style=\"width:33%;\">"; echo $request['DedicatedTo']; echo "</td></tr>"; } echo "</table>"; ?> The original PHP code is just the same, enclosed in a div with an id attribute of 'ajax_table'. The JavaScript is: // JavaScript Document var xmlHttp_moniter function moniter() { xmlHttp_moniter = GetXmlHttpObject_parcel() if(xmlHttp_moniter == null) { alert("browser does not support HTTP Request") return } var url="ajax_table.php?random=" + Math.random() xmlHttp_moniter.onreadystatechange = stateChanged xmlHttp_moniter.open("GET",url,true) xmlHttp_moniter.send(null) } function stateChanged() { if(xmlHttp_moniter.readyState==4 || xmlHttp_moniter.readyState == "complete") { document.getElementById("ajax_table").innerHTML = xmlHttp_moniter.responseText setTimeout('ajax_table()',60000); } } function GetXmlHttpObject_parcel() { var xmlHttp_moniter=null; try { xmlHttp_moniter=new XMLHttpRequest(); } catch (e) { //Internet Explorer try { xmlHttp_moniter=new ActiveXObject("Msxml2.XMLHTTP"); } catch (e) { xmlHttp_moniter=new ActiveXObject("Microsoft.XMLHTTP"); } } return xmlHttp_moniter; } and that is on the page that is requesting the other php page.

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  • Rails3 - will_paginate plugin strange output

    - by Sam
    I have the will_paginate plugin working in an application, but when I paginate a resource it just spits out the HTML as text, doesn't provide links to the next pages and such. And when I manually type in the URL the plugin is working it just doesn't make <%= will_paginate @products %> into links such as next 1 2 3 ... last Ideas?

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  • How do i get my search bar to actually work?

    - by Sam
    Hey guys, I've got a search bar and it looks fine, but i don't really know how to make it search the whole of my site... Here's my html code so far: <form class="search2" method="get" action="default.html" /> <input class="search2" type="text" name="serach_bar" size="31" maxlength="255" value="" style="left: 396px; top: 153px; width: 293px; height: 26px;" /> <input class="search1" type="submit" name="submition" value="Search" style=" padding- bottom:20px; left: 691px; top: 153px; height: 23px" /> <input class="search2" type="hidden" name="sitesearch" value="default.html" /> Thanks in advance guys!

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  • Change div order in CSS or javascript

    - by Sam Holder
    say I have layout like so: <div id="main"> <div id="NormalContent"> {some content which is a fixed length list} </div> <div id="FeaturedContent"> {some content which may contain a long list} </div> </div> and I want to place FeaturedContent above NormalContent. Can I do this with CSS? I assume I can with Javascript?

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  • Changing the block size of a dfs file in Hadoop

    - by Sam
    I found that my map tasks is currently inefficient when parsing one particular set of files (total 2 TB). I'd like to change the block size of files in the Hadoop dfs (from 64MB to 128 MB). I can't find how to do it in the documentation for only one set of files and not the entire cluster, does anyone know the command that would change the block size when I upload it (ie copy from local to the dfs)? Thanks!

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  • Rails from with better url

    - by Sam
    wow, switching to rest is a different paradigm for sure and is mainly a headache right now. view <% form_tag (businesses_path, :method => "get") do %> <%= select_tag :business_category_id, options_for_select(@business_categories.collect {|bc| [bc.name, bc.id ]}.insert(0, ["All Containers", 0]), which_business_category(@business_category) ), { :onchange => "this.form.submit();"} %> <% end %> controller def index @business_categories = BusinessCategory.find(:all) if params[:business_category_id].to_i != 0 @business_category = BusinessCategory.find(params[:business_category_id]) @businesses = @business_category.businesses else @businesses = Business.all end respond_to do |format| format.html # index.html.erb format.xml { render :xml => @businesses } end end routes map.resources What I want to to is get a better url than what this form is presenting which is the following: http://localhost:3000/businesses?business_category_id=1 Without rest I would have do something like http://localhost:3000/business/view/bbq bbq as permalink or I would have done http://localhost:300/business_categories/view/bbq and get the business that are associated with the category but I don't really know the best way of doing this. So the two questions are what is the best logic of finding a business by its categories using the latter form and number two how to get that in a pretty url all through restful routes in rails.

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  • MYSQL - Query to check against other table (hard to explain...)

    - by Sam
    I have a query that gets a list of emails who have subscribed for a newsletter trial which lasts 30 days.. $thirty = time() - 3024000; SELECT c.email FROM tbl_clients AS c JOIN tbl_clientoptions AS o ON o.client = c.id WHERE o.option = 'newsletter' AND c.datecreated $thirty What I want to do is do a check in that same query so it also returns clients OVER 30 days old if they have the tbl_clientoptions.option = 'trialoverride' (ie; a row in the client options table with the value "trialoverride") basic columns are: TBL_CLIENTS id,name,email,datecreated TBL_CLIENTOPTIONS id,client,option

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  • Preserving NULL values in a Double Variable

    - by Sam
    Hi, I'm working on a vb.net application which imports from an Excel spreadsheet. If rdr.HasRows Then Do While rdr.Read() If rdr.GetValue(0).Equals(System.DBNull.Value) Then Return Nothing Else Return rdr.GetValue(0) End If Loop Else I was using string value to store the double values and when preparing the database statement I'd use this code: If (LastDayAverage = Nothing) Then command.Parameters.AddWithValue("@WF_LAST_DAY_TAG", System.DBNull.Value) Else command.Parameters.AddWithValue("@WF_LAST_DAY_TAG", Convert.ToDecimal(LastDayAverage)) End If I now have some data with quite a few decimal places and the data was put into the string variable in scientific notation, so this seems to be the wrong approach. It didn't seem right using the string variable to begin with. If I use a double or decimal type variable, the blank excel values come across as 0.0. How can I preserve the blank values? Thanks

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  • How to get the src for a video with multiple sources?

    - by Sam Dutton
    I'd like to be able to get the src value that is actually used for a video element like the following: <video> <source src="foo.mp4" type='video/mp4; codecs="avc1.42E01E, mp4a.40.2"'> <source src="foo.webm" type='video/webm; codecs="vp8, vorbis"'> <source src="foo.ogv" type='video/ogg; codecs="theora, vorbis"'> </video> In Firefox (at least), src is defined for the source elements but not for the video element. How can I find which source is used?

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