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• How to create plots in multiple windows and keep them seperate in R

  - by PaulHurleyuk

  Hello SOers, I'm sure this is an easy problem, but my google / help foo has failed me, so it's up to you. I have an R script that generates several plots, and I want to view all the plots on screen at once (in seperate windows), but I can't work out how to open multiple graphics windows. I'm using ggplot2, but I feel this is a more basic problem, so I'm just using base grapics for this simple example x<-c(1:10) y<-sin(x) z<-cos(x) dev.new() plot(y=y,x=x) dev.off() dev.new() plot(x=x,y=z) But this doesn't work. I'm on Windows if this matters (Windows + Eclipse + StatEt)

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• Update JSON file C# W8 development

  - by AndrewB

  At the moment, I've got a JSON file with content looking like this: { "username": "test", "someNumber":100 } I'm using JSON.Net to fetch the .JSON file from a webserver - C#: var http = new HttpClient(); http.MaxResponseContentBufferSize = Int32.MaxValue; var response = await http.GetStringAsync(URI); var result = JsonConvert.DeserializeObject<DatClass.Result>(response); This works great together with the class getting/setting the properties. However, what I would like to know is whether there's a good way for a user to update the .JSON file through a textbox UI? As in: [textbox - update username] [update button] - username sent to server - .JSON file updated - [textblock - showing updated username in UI]. I'm not looking for exact code solutions, I'm rather looking for good solutions on this, and/or if this is a terrible idea of an easy database(?).

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• Events in Classes (VB.NET)

  - by Otaku

  I find that I write a lot of code within my classes to keep properties in sync with each other. I've read about Events in Classes, but have not been able to wrap my head around how to make them work for what I'm looking for. I could use some advice here. For example, in this one I always want to keep myColor up to date with any change whatsoever in any or all of the Red, Green or Blue properties. Class myColors Private Property Red As Byte Private Property Green As Byte Private Property Blue As Byte Private Property myColor As Color Sub New() myColor = Color.FromArgb(0, 0, 0) End Sub Sub ChangeRed(ByVal r As Byte) Red = r myColor = Color.FromArgb(Red, Green, Blue) End Sub Sub ChangeBlue(ByVal b As Byte) Blue = b myColor = Color.FromArgb(Red, Green, Blue) End Sub End Class If one or more of those changes, I want myColor to be updated. Easy enough as above, but is there a way to work with events that would automatically do this so I don't have to put myColor = Color.FromArgb(Red, Green, Blue) in every sub routine?

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• How to fill many texbox by using loop function in VBA

  - by melt

  Hi ! I made a user interface in VBA with many textbox. I read an excel sheet and I put all the value of this one in all the textbox of my user inteface. So the user can modify the values and then save it in the excel sheet. Because we can't name the textbox like array (textBox(1), textbox(2)....) this is hard to fill the textbox by using a loop function. I tried to use tag or tabindex property but I don't find the good way to proceed .... Is someone know an easy way to solve this !!! Thanks

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• How can I recursively read out directories in Perl?

  - by Przemek

  Hi, I want to read out a directory recursively to print the data-structure in an HTML-Page with Template::Toolkit. But I'm hanging in how to save the Paths and Files in a form that can be read our easy. My idea started like this sub list_dirs{ my ($rootPath) = @_; my (@paths); $rootPath .= '/' if($rootPath !~ /\/$/); for my $eachFile (glob($path.'*')) { if(-d $eachFile) { push (@paths, $eachFile); $paths[$i] = &list_dirs($eachFile); } else { push (@files, $eachFile); } } return @paths; } How could I solve this problem?

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• Accessing wrapped method attribute in C#

  - by prostynick

  I have following code: public static void ProcessStep(Action action) { //do something here if (Attribute.IsDefined(action.Method, typeof(LogAttribute))) { //do something here [1] } action(); //do something here } For easy use I have some similar methods using method above. For example: public static void ProcessStep(Action<bool> action) { ProcessStep(() => action(true)); //this is only example, don't bother about hardcoded true } But when I use the second method (the one above), even if original action had attribute, code [1] will not be executed. How can I find if method is only wrapper and underlying method contains attribute and how to access this attribute?

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• Are there any programming languages targeting PHP, besides haXe?

  - by stesch

  PHP doesn't get much love but is still a winner at easy deployment (for cheap hosting). Are there any programming languages (besides haXe) that target PHP? Writing applications in this language and then translating it into PHP, like some languages target C as an intermediate language? The Scheme implementation Chicken compiles into C. XOTcl converts Java code into Tcl code LINJ was(?) a tool to convert Lisp into nice looking Java code … + a lot of ways to produce JavaScript without touching JavaScript.

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• Watermarking Flash Videos (server-side)

  - by Roberto Aloi

  Hi all, I have a bunch of flash videos that I need to watermark with user related information, to make illegal re-distribution of these files harder. I'm wondering how can this be done server-side. If done client-side, it will be quite easy for the user to intercept the videos before they are watermarked. Since the watermark should contain user-specific information I can't really watermark the videos before encoding them (unless I have an encoded video per user - not feasible). I'm expecting this to affect the streaming performances a lot, though. Any idea how this can be done (possibly in an efficient way)?

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• How to override JS function from a firefox extension?

  - by BruceBerry

  Hello, I am trying to intercept calls to document.write for all pages. Setting up the interception inside the page by injecting a script like function overrideDocWrite() { alert("Override called"); document.write = function(w) { return function(s) { alert("special dom"); w.call(this, wrapString(s)); }; }(document.write); alert("Override finished"); } is easy and works, but i would like my extension to setup the interception for each document object from inside the extension. I couldn't find a way to do this. I tried to listen for the "load" event and set up the interception there but it also fails. How do I hook calls to doc.write from an extension?

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• Java multidimensional array and scanner novice Q

  - by Max

  I'm new to Java and trying to in essence implement a grid with a character, and if the user inputs 'w' 'a' 's' or 'd' the character moves up/down/left/right within the plane. I created a multidimensional array sized 10x10 public static String[][] grid = new String[10][10]; And then just used a for loop to print "*"s in a 10x10 grid, except for grid[a][b] which is equal to character "A" i.e. my thing to be moved around. That seemed to work alright, then I needed to detect the 'wasd' input from the user so I set up a: Scanner in = new Scanner (System.in); while (in.hasNext()) And I had then: String s = in.next(); char ch = s.charAt(0); switch (ch) but I couldn't make this work, and it wasn't because I didn't complete the "switch" statement, I did, I just see it void copying and pasting the entire thing. I'm sure its incredibly easy slight thing I am missing, can you please point it out for me?

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• JPQL: What kind of objects contains a result list when querying multiple columns?

  - by Bunkerbewohner

  Hello! I'm trying to do something which is easy as pie in PHP & Co: SELECT COUNT(x) as numItems, AVG(y) as average, ... FROM Z In PHP I would get a simple array like [{ numItems: 0, average: 0 }] which I could use like this: echo "Number of Items: " . $result[0]['numItems']; Usually in JPQL you only query single objects or single columns and get Lists types, for example List or List. But what do you get, when querying multiple columns?

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• Interacting with Sql Server jobs programmatically

  - by Shlomo

  I would like to be able to interact with a Sql Server job programmatically through a web page. What is the best way to do this? Through SMO? The job will take a long time to run, so it needs to fire and forget, and I would also like to be able to stop it. If SMO, can anybody point me to an easy tutorial? Google gave me some fairly basic stuff but nothing substantial... SQL Server 2008, ASP.NET MVC web app.

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• How do I find the user that has both a cat and a dog?

  - by brad

  I want to do a search across 2 tables that have a many-to-one relationship, eg class User << ActiveRecord::Base has_many :pets end class Pet << ActiveRecord::Base belongs_to :users end Now let's say I have some data like so users id name 1 Bob 2 Joe 3 Brian pets id user_id animal 1 1 cat 2 1 dog 3 2 cat 4 3 dog What I want to do is create an active record query that will return a user that has both a cat and a dog (i.e. user 1 - Bob). My attempt at this so far is User.joins(:pets).where('pets.animal = ? AND pets.animal = ?','dog','cat') Now I understand why this doesn't work - it's looking for a pet that is both a dog and a cat so returns nothing. I don't know how to modify this to give me the answer I want however. Does anyone have any suggestions? This seems like it should be easy - it doesn't seem like an especially unusual situation.

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• Android ListView highlight multiple items

  - by Tobias Kuess

  I want my ListView to change its background for each selected item (Multi-Selection). I used this code: <ListView ... android:drawSelectorOnTop="false" android:listSelector="@android:color/darker_gray" > This works fine, but it is just possible to select one single item of the list. If I select another one the selection is resetted and the new one changes its background. Is there an easy and fast way to make it possible to select more than one item at the same time with changing the background of every selected item?

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• Flex Framework vs. Micro-Architecture

  - by droboZ

  I'm in the process of choosing a framework for my flex development, and one of the questions that was asked about a framework was "is this a framework or a micro-architecture"? Can someone clarify what's the difference? What exactly is a framework, and when can we start calling what we have a framework? I work with FlexBuilder3 (now called FlashBuilder4) and have a lot of standard things that I do for almost all projects, and components that I created for easy re-use. Some are very very small, but the benefit of a 1-liner has been immense for me instead of repeating the code over and over. So in the framework/micro-architecture scheme, can I say that these are my internal in-house framework or are they part of a micro-architecture? Trying to understand this topic better.

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• Programmatically dial a series of numbers on a modem?

  - by Nathan Long

  At work, we just got a large number exotic cellular devices that need to be programmed. To do this, you plug in a standard home telephone and dial a series of numbers, with pauses between them. To me, this is a task that begs to be automated, and we've got one Linux desktop (a test Asterisk machine) with a modem on it. Does anybody know an easy way to approach this task? I could install Ruby or Python on that desktop. I also know PHP, but I'm not sure how to run it outside of a server setup, and it seems silly to install Apache for this.

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• Documents stored in SQL table

  - by vradenburg

  I have a legacy FoxPro application which stores documents in an SQL table in a field with the image datatype. FoxPro accesses the image datatype as a "General" field which can be used to store various files. I have a FoxPro control which interfaces with the General field for modifying/viewing the document that was stored. I need to migrate this control to .NET and make it easy for users to view/modify documents of various types. Does anyone have any suggestions on some ways to go about this or know of things that I'll need to consider for the migration to .NET? I'm pretty sure that I'll need to migrate the field to either a varbinary(max) or FileStream data type.

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• How to convert .NET WPF application to Windows Forms?

  - by Janusz

  Hello, We have created a beautifully designed .NET WPF desktop application. We are installing the application with InnoSetup , and if .NET 3.5 is not present, it automatically installs it. However, the package to download .NET 3.5 is huge and we found out that about 30% of users do not finish instalation due to this. The obvious solution is to recode everything into .NET 1.1 with Windows Forms but its a major development which would take few weeks. Also, we would then face dilemma if to support both versions (and use innosetup to choose the right one) or just ditch WPF all together. Is there any easy way how to convert WPF to Windows Forms? Or do we have any alternative options to consider? Thank you!

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• Why should I use an N-Tier Approach When using an SqlDatasource is ALOT EASIER ?

  - by The_AlienCoder

  When it comes to web development I have always tried to work SMART not HARD. So for along time My Aproach to interacting with databases in my AspNet projects has been this : 1) Create my stored procedures 2) Drag an SQLDatasource control on my aspx page 3) Bind a DataList Control to my SQLDatasource 4) Insert, Update & Delete by using my Datalist or programmatically using built in SQLDatasource methods e.g MySqlDataSource.InsertParameters["author"].DefaultValue = TextBox1.Text; MySqlDataSource.Insert(); Recently however I got a relatively easy web project. So I decided to employ a 3-tier Model...But I got exhausted halfway and just didnt seem worth it ! It seemed like I was working too HARD for a project that could have been easily accomplished by a couple of SqlDataSource Controls. So Why Is the N-Tier Model better than my Approach? Has it anything to do with performance? What are the advantages of the ObjectDataSource control over the SqlDataSource Control?

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• Make a Method of the Business Layer secure. best practice / best pattern

  - by gsharp

  We are using ASP.NET with a lot of AJAX "Page Method" calls. The WebServices defined in the Page invokes methods from our BusinessLayer. To prevent hackers to call the Page Methods, we want to implement some security in the BusinessLayer. We are struggling with two different issues. First one: public List<Employees> GetAllEmployees() { // do stuff } This Method should be called by Authorized Users with the Role "HR". Second one: public Order GetMyOrder(int orderId) { // do sutff } This Method should only be called by the owner of the Order. I know it's easy to implement the security for each method like: public List<Employees> GetAllEmployees() { // check if the user is in Role HR } or public Order GetMyOrder(int orderId) { // check if the order.Owner = user } What I'm looking for is some pattern/best practice to implement this kind of security in a generic way (without coding the the if then else every time) I hope you get what i mean :-)

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• Background Image w/Quartz Drawing

  - by James

  I'm using Quartz to do some basic drawing. I recently decided I wanted a background image for my app. So I went into my XIB file and added a UIImageView and set the background, looks good. However, when I run it, the Z-Index of the image is above my drawing. I googled a bit and found that you can do Layout Send to Back in IB...but that option is grayed out to me when I have my UIImageView selected. Is there an easy way to move this UIImageView permanently to the background? Is there perhaps an alternate method to doing this that I should consider? Thanks

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• How to write an editor that shows the content of a folder in eclipse?

  - by tangens

  Motivation I have written an eclipse plugin that shows me a list of all files and folders with unreviewed content. When selecting a folder, I want an editor to open showing all files and subfolders that this folder contains. It has to work for versioned items, too. So I have to create the content of the editor within my plugin (no backing IResource). What I currently have Right now I'm opening a RemoteFileEditorInput for a versioned file (subclipse) or I'm using IWorkbenchPage.openEditor() for a FileEditorInput. Question What's an easy way to visualize dynamic content (directory listing) inside of an text editor?

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• php mail function cannot send to [email protected] ??i

  - by user333216

  I'm having trouble when sending emails thorough the mail() function. I have a script that works perfectly fine for an email address like [email protected] but when the first part of the email is something with a dot like [email protected] it doesn't work and returns this error : Warning: mail() [function.mail ]: SMTP server response: 554 : Recipient address rejected: Relay access denied in confirmed.php on line 119 I am using real email address but have changed it in the above example. Any thoughts - I'm not a php master but surely there is an easy way to send emails to address with a 2 part first section?? Thanks in advance Ali

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• OpenLayers: Get resolution of map in a given projection (4326)

  - by David Pfeffer

  I'm using OpenLayers to display OpenStreetMap maps. (Though, I'd assume this should be general enough to work for any map product...) I'm displaying some very sophisticated vector overlays, and the amount and resolution of the features I'm returning from the server via GeoJSON to overlay has proven too much for many computers. What I'd like to do now instead is to only send data befitting the resolution of the current zoom. This should be relatively easy to do using the getResolution and calculateBounds methods on the Map object. calculateBounds returns a Bounds object that then can be transformed between the map projection and display projection. How do I transform the resolution into my desired projection (4326 in this case)?

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• (Ogre3D) Using a 3D texture slice as a 2D texture input.

  - by ~mech

  Hello, I am trying to do something with Ogre using 3D textures. I would like to update a 3D-texture by going through it slice-by-slice and recalculating the color values. However, in each step I also need to access the previous slice somehow to read the values. Setting up a slice as a render target is easy, but is it possible to feed such a slice as a 2D-texture input to a shader, or do I need to explicitly copy it into a separate 2D texture? Thanks.

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