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• Move a legend in ggplot2

  - by Dan Goldstein

  I'm trying to create a ggplot2 plot with the legend beneath the plot. The ggplot2 book says on p 112 "The position and justification of legends are controlled by the theme setting legend.position, and the value can be right, left, top, bottom, none (no legend), or a numeric position". The following code works (since "right" it is the default), and it also works with "none" as the legend position, but "left", "top", "bottom", all fail with "Error in grid.Call.graphics("L_setviewport", pvp, TRUE) : Non-finite location and/or size for viewport" library(ggplot2) (myDat <- data.frame(cbind(VarX=10:1, VarY=runif(10)), Descrip=sample(LETTERS[1:3], 10, replace=TRUE))) qplot(VarX,VarY, data=myDat, shape=Descrip) + opts(legend.position="right") What am I doing wrong? Re-positioning a legend must be incredibly common, so I figure it's me.

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• Pear Crypt/HMAC.php failed to open stream

  - by Aaron

  Hello, I am on a MediaTemple Dedicated Virtual server and have enabled Pear using the instructions found at: http://kb.mediatemple.net/questions/514/Enabling+PEAR+by+setting+your+open_basedir+and+include_path Here's the problem... In my PHP script, I have this: require_once 'Crypt/HMAC.php'; When I execute the script, I get this message: S3::require_once(Crypt/HMAC.php) [s3.require-once]: failed to open stream: No such file or directory It's a script for integrating with Amazon S3. When we were on the Grid service it worked fine. I've only had problems since moving to a DV server. I installed the HMAC pear module using this command: pear install Crypt_HMAC Then re-started the server. Still no luck. Any ideas? Thanks a bunch if you can help :)

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• RenderControl error

  - by Rubans

  HI, I have a grid with which I'm templating columns with and one column is a user control. Since I'm adding these in the code behind ( using ITemplate), I get an error when I try to render the UserControl. This particular user control does require a scriptmanager since it includes a ajax control (radcombobox). The error I get is : Script control 'LookupComboBox' is not a registered script control. Script controls must be registered using RegisterScriptControl() before calling RegisterScriptDescriptors(). I'm not sure even if my approach is correct using user control and using RenderControl.

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• PHP CLI version issue

  - by seengee

  I am trying to use Zend Tool on my media temple Grid Server account. The problem is that the installed CLI version of PHP is 4.4.8 and Zend Framework needs PHP5. On an account basis its possible to choose PHP 4 or 5 but not so for CLI. Its possible to globally select to use PHP5 by using the extension .php5 but in the case of Zend Tool which is called by a shell script zf.sh i'm not sure what options i have. PHP5 is on the server at /usr/bin/php5 and someone at MT has suggested creating an alias so php=/usr/bin/php5 but i'm not sure that will work. Any ideas?

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• Modifying Bresenham's line algorithm

  - by sphennings

  I'm trying to use Bresenham's line algorithm to compute Field of View on a grid. The code I'm using calculates the lines without a problem but I'm having problems getting it to always return the line running from start point to endpoint. What do I need to do so that all lines returned run from (x0,y0) to (x1,y1) def bresenham_line(self, x0, y0, x1, y1): steep = abs(y1 - y0) > abs(x1 - x0) if steep: x0, y0 = y0, x0 x1, y1 = y1, x1 if x0 > x1: x0, x1 = x1, x0 y0, y1 = y1, y0 if y0 < y1: ystep = 1 else: ystep = -1 deltax = x1 - x0 deltay = abs(y1 - y0) error = -deltax / 2 y = y0 line = [] for x in range(x0, x1 + 1): if steep: line.append((y,x)) else: line.append((x,y)) error = error + deltay if error > 0: y = y + ystep error = error - deltax return line

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• How can I Unescape and Reescape strings in .net?

  - by firoso

  So here's my situation. I am working on an editor for a communications channel that works over an RS232 serial ASCII terminal. Let's not go into detail for that ;-) To simplify, I need a textbox on a WPF control that can take in text like "Commit\r\n" (which is the .net string "Commit\r\n") and convert it back to "Commit\r\n" as a .net string. I was hoping for a string.Unescape() and string.Escape() method pair, but it doesn't seem to exist. Am I going to have to write my own? or is there a more simple way to do this?

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• Disabling Button with custom Content in Silverlight?

  - by andrej351

  Hi there, What is the easiest way to create a Silverlight Button with custom Content which knows how to 'look' disabled? I.e. if you set IsEnabled="False" it will look greyed out. The custom Content will be dead simple, text and an image. I have done this before in a WPF application quite easily by setting the Content to a StackPanel containing a TextBlock and an Image. I then implemented a Style Trigger on the Image to change it to a greyed out version when it wasn't enabled. The text changed colour by itself. As far as I can tell the custom Content disappears altogether when the button is disabled in Silverlight. Any help is appreciated. Cheers, Andrej.

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• Front End Developer v/s PHP-MySQL Engineer

  - by user301943

  Hello, I want to decide which of this would be a more viable career option? I am ready to quit my current job and hence I am looking for new opportunity. Current job is maintainence and no more active development. My current role is of a PHP/MySQL Developer. I very well understand web-programming and am comfortable with RoR/Sinatra/Zend MVC/JQuery/JSON manipulation, etc. I understand MySQL InnoDB/MyISAM engine and how one differs from the other, etc. Basically, I could very well manage the deployment of a web-application end-to-end including configuration of Apache/Nginx servers, memcache,etc On the other hand, I am being offered a Sr.Front End Web developer that would require me to extensively write HTML/CSS crossbrowser/crossplatform compliant code. I very well understand XHTML/CSS/Box model etc. I would be working on Drupal for the management of websites. While I understand continuing to work on server-side technologies would always be a good career path, how would the role of Core front-end developer turn out to be? If I take this opportunity, will I eventually get a chance to focus onto UCD, HCI, Information Architect,etc. So are these kinda roles possible if I focus on front end development? No offenses to the Front end developers, just want to understand if this is something I want to gain a mastery over. I have 2 yrs of industry experience after graduating with a MS-Computer Science. Although, I have a CS degree, if I were to take uip serious front-end role; I could probably go back and take up some design/HCI/UI courses. Please advise.

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• Index was outside the bounds of the array. IndexOutOfRangeException in LINQ to SQL

  - by gtas

  Im getting this exception in the protected virtual void SendPropertyChanged(String propertyName) { if ((this.PropertyChanged != null)) { this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName)); <---- HERE !!! } } of one recently table association i created, there lots of same associations around the database, and this happened in the 4 specific tables i added. Its 1...* relationship and association is Primary Table - Id (identity auto generated) Foreign PId column int not null. I just dont get it....Im using SqlMetal for generation, i regenerated the schema, rebuild, same. This is causing while inserting row in DevExpress XtraGrid, but i dont think this should be issue, same control with same functionality but for different tables works ok. I use grid's event for append value in a property when the entity creating. I disabled this but same again. Recreated the association. No change, exception occurs. Any ideas?

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• Agile and Scrum burning me down please help me figuring out the truth

  - by jadook

  hi all, in the last while I installed MS-TFS 2008 then started to get myself prepared to use Agile Process Guidance template shipped with the TFS. with little googling I passed through Mike Cohn materials: I watched his conference in youtube "sponsored by google: http://www.youtube.com/watch?v=fb9Rzyi8b90 http://www.youtube.com/watch?v=jeT0pOVg0EI Read his book "Agile Estimating and Planning" Watching the video series in his website: http://www.mountaingoatsoftware.com/presentations-tag/video-recorded I was very happy while absorbing and eating the techniques he is using with the teams and how agile and scrum is such a great software process/methodology until I saw Mike answering a question regarding an architect role and talking about the requirements document... at that point everything start falling apart due to the following: Last year I had been assigned to make full analysis "including requirements gathering" for big project "very high priority project". within 2 months of hardwork, dedication and commitment I delivered the whole analysis with full satisfaction of the customer and my BOSS and ZERO amendments. Later on, the project entered the architecting, development ... phases. due to the fact that the system included many competitive and exciting features I requested patenting it and its going in the process... so imagine you are the kind of person who used to love facing all kind of challenges and returning with excellent experience and results for the stakeholders and yourself, How fairly agile and scrum processes will credit and admit your talent and passion while the scrum master/coach treat the team as one unit that accomplish user stories and converge through trial and error approach??!!!! with that dark thoughts about agile and scrum I found many people "anti agile" and on top of them is "Crispin Rogers Johnson": http://agile-crispin.blogspot.com/ that guy made anti statement for everything Mike Cohn used to talk about. I really don't know what to do next! so any guidance will be appreciated. Thanks,

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• How to make a table in Silverlight ?

  - by Shnitzel

  So I'd like to make a visible table, with a border around each cell and a different background color for the header. I'd like to eventually insert controls into this. For example, put a textfield inside one of the table elements, or some radio buttons, etc. Is there a control for this? I've narrowed it down to two possibilities, but they both seem kind of "meh": use the Grid Control - I like this but is there a way to color the border on the cell (I did not find this) use the DataGrid Control - this control is just way too complicated for what I need. I'm just looking for an html style table in silverlight, any ideas?

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• One Model to Rule Them All - VS2010 UML, ADO.NET Entity Data Model, and T4

  - by Eric J.

  I worked on a fairly large project a while back where we modeled the classes in Enterprise Architect and generated the (partial) POCO classes (complete with model-driven business rule validations), persistence (NHibernate mapping file) and DDL. Based on certain model attributes we could flag alternate generation strategies or indicate that a particular portion would be entirely hand-coded. There was a good deal of initial investment, but it paid large dividends over the lifetime of a 15 developer, 3 year project. I'm investigating doing something similar with the current Microsoft technology stack. The place I'm stuck is that class modeling is done with the VS 2010 UML tools, but logical data modeling is done with Entity Data Modeler. Is it a reasonable path to use VS 2010 UML as the "single source of truth" and code generate the edmx files based on the class model? That's the inverse of the common path to create the entity model and use a POCO generator to generate classes. However, a good class model can be used to generate much more than just the properties so I tend to view it as a better choice than the entity model.

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• Dispatcher.Invoke not working in .NET 3.0 SP1

  - by Kapil

  I am developing a WPF windows application and am getting into a trouble running the app in .NET 3.0. Everytime that I try to access the System.Windows.Threading.Dispatcher.Invoke() method, I get a method-not-found error. Basically, I spawn a new thread from the main thread and try to change some UI properties (basically update a progress-bar) from the new thread using the following code: updateStatusDelegate usd = new updateStatusDelegate(progressBar.SetValue); Dispatcher.Invoke(usd, System.Windows.Threading.DispatcherPriority.Background, new object[] { System.Windows.Controls.ProgressBar.ValueProperty, Convert.ToDouble(perc) }); Can someone help me understand why do I encounter this error in .NET 3.0 version? I am able to get this going in .NET 3.0 SP2. But I guess .NET is not distributed independantly and is packaged only with .NET 3.5 version. My goal is to get away with the dependancy of .net 3.5 and have a dependancy on .NET 3.0 version Any help would be appreciated. Thanks Kapil

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• XBAP usage and maturity issues

  - by Yonatan Karni

  we're considering migrating our UI to XBAP. we've chosen XBAP despite knowing the clients must have .net pre-installed, since we're not targeting the masses but rather IT professionals in the corporate environment, and it's a way to preserve our investment (in a WPF based UI in a client-server architecture) and enjoy web deployment. however, we are concerned about the maturity of the platform/architecture and it's adoption. do you know of any commercial applications out there using XBAP, and do you have any experience using it? can you elaborate on that experience? also, as @Murph suggested, can you think of strong reasons to prefer clickOnce over XBAP (or the other way around)?

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• WinForms prints to default printer even if it's not available/connected

  - by Valentein

  How can I determine if printer is connected? Typically this application prints to the default printer but in some cases that printer may not be available. If so I don't want the job sent to it's queue but rather printed to another available printer. I understand the PinterSettings.InstalledPrinters property. Does PrintDocument.PrinterSettings.IsValid return false if a printer is not available? Does WPF provide this kind of functionality? My problem is different than Printing problem in C# windows app - Always prints to default printer

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• Small standalone SQL database similar to access in the old days(ie file database)

  - by Ian

  Hi, I am looking for a easy to use and deploy sql type database i can ship with a desktop application. This will be a small application user's can download from my website. In the vb6 days, access was the common database for small desktop apps, what is my option these days? Looking at SQL CE it seems to have a quite a few limitations such as count(distinct) etc SQL express needs to be installed and running as a service (could i include the SQL express deployments in my deployment so the user doesn't even know its been installed? I assume size would then be an issue) SQL 2005/2008 is not an option due to size and licensing restrictions. I would like to use c#, wpf and entity framework. What would seem to be the best options based on your knowledge and experience? Thanks

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• XCOPY-deploying Microsoft Sync Framework in a no admin rights scenario (i.e. ClickOnce install)

  - by Mike Bouck

  I'm currently designing a smart client app (WPF) which needs to operate in an "occasionally disconnected" mode. For the offline scenario, I'm looking at using: Disconnected Service Agent Application Block (from the Smart Client Software Factory) Microsoft Sync Framework I should mention that I want my smart client app to be XCOPY-deployable, auto-updating, and installable without administrative privledges -- basically a ClickOnce-deployed app. From what I can tell this means the Microsoft Sync Framework is out because it has some COM in it's implementation that needs to get registered on the client which requires admin rights. Is it possible to XCOPY deploy and run MSF from a ClickOnce app? Any other ideas for data synchronization?

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• GWT - How to define a Widget outside layout hierarchy in uibinder xml file

  - by mr_room

  Hello, this is my first post. I hope someone could help me. I'm looking for a way to define a widget in UiBinder XML layout file separately, without being part of the layout hierachy. Here's a small example: <ui:UiBinder xmlns:ui="urn:ui:com.google.gwt.uibinder" xmlns:g="urn:import:com.google.gwt.user.client.ui"> <g:Label ui:field="testlabel" text="Hallo" /> <g:HTMLPanel> ... </g:HTMLPanel> The compile fails since the ui:UiBinder element expects only one child element. In Java Code i will access and bind the Label widget as usual: @UiField Label testlabel; For example, this could be useful when you define a Grid or FlexTable - i want to define the Labels for the table header within the XML layout file, not programmatically within the code. Many thanks in advance

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• How to move or position a legend in ggplot2

  - by Dan Goldstein

  I'm trying to create a ggplot2 plot with the legend beneath the plot. The ggplot2 book says on p 112 "The position and justification of legends are controlled by the theme setting legend.position, and the value can be right, left, top, bottom, none (no legend), or a numeric position". The following code works (since "right" it is the default), and it also works with "none" as the legend position, but "left", "top", "bottom", all fail with "Error in grid.Call.graphics("L_setviewport", pvp, TRUE) : Non-finite location and/or size for viewport" library(ggplot2) (myDat <- data.frame(cbind(VarX=10:1, VarY=runif(10)), Descrip=sample(LETTERS[1:3], 10, replace=TRUE))) qplot(VarX,VarY, data=myDat, shape=Descrip) + opts(legend.position="right") What am I doing wrong? Re-positioning a legend must be incredibly common, so I figure it's me.

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• How to disable localization of errors in Visual Studio?

  - by MartyIX

  I use Visual Studio 2008 and it really makes me crazy how it shows error messages (in Error List window, Output window - especially exceptions) partially in English and partially in my native language. Interestingly, it is worse in WPF than in WinForms project. I've read here that it is about Culture of the running thread (so that the problem is in a settings for .NET). Why am I solving it? It's simple because if I run into an error message and I don't know what it exactly mean or how to fix the problem then trying to google the problem in any other language than in English is very problematic. For example, it would be useful to set English for debugging purposes. How to solve the problem? Thanks for any suggestion!

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• Silverlight Canvas doesn't support KeyDown?

  - by chakrit

  I have this: <Canvas x:Name="LayoutRoot" KeyDown="LayoutRoot_KeyDown"> </Canvas> In a newly-minted Ag 3 application in VS2008. I simply changed the default <Grid /> to <Canvas /> and added a KeyDown handler that pops a MessageBox. But no matter how I tried, the KeyDown event just would never, ever fires. Is it simply that <Canvas /> doesn't support KeyDown or am I doing something wrong?

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• [Architecture] Roles for white-label service access.

  - by saurabhj

  Okay, I know I'm doing something wrong - but can't figure out a better way. I am developing a website which is going to allow users to setup their own mini-websites. Something like Ning. Also, I have only 1 basic login and access to each mini website is provided (right now) via roles. So the way I am doing this right now is: Everytime a new mini website is created - say blah, I create 2 roles in my application. blah_users and blah_admin The user creating the mini website is given the role - blah_admin and every other user wanting to join this mini website (or network) is given the role - blah_user. Anyone can view data from any website. However to add data, one must be a member of that mini site (must have the blah_user role assigned) The problem that I am facing is that by doing a role based system, I'm having to do loads of stuff manually. Asp.Net 2 controls which work on the User.IsAunthenticated property are basically useless to me now because along with the IsAuthenticated property, I must also check if the user has the proper role. I'm guessing there is a better way to architect the system but I am not sure how. Any ideas? This website is being developed in ASP.Net 2 on IIS 6. Thanks a tonne!

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• How can I stop Silverlight DataForm immediately saving changes back to underlying object?

  - by Simon_Weaver

  I have a Silverlight master-details DataForm where the DataForm represents a street address. When I edit the Address1 textbox, the value gets automatically committed to the bound Address object once focus leaves the textbox. If I hit the Cancel button, then any changes are undone because Address implements IEditableObject and saves its state. The problem is that since any change is immediately propagated to the underlying object it will be shown in the master grid before the user has actually hit Save. I also have other locations where this data is shown. This is not a very good user experience. I've tried OneWay binding but then I can't commit back without manually copying all the fields over. The only thing I can think of doing is to create a copy of the data first or using OneWay binding, but they both seem a little clumsy. Does DataForm support this way of working?

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• SPGridView current item in Sharepoint

  - by pistacchio

  Hi, I'm making a custom webpart. I takes some items from a list and display them with a SPGridView. I bound the fields like this: // Grab data from a SP List into dvwTickets SPGridView grdMyTickets = new SPGridView(); grdMyTickets.DataSource = dvwTickets; [..] BoundField colTicketTypology = new BoundField(); colTicketTypology.DataField = "ID"; colTicketTypology.HeaderText = ticketList.Fields.GetFieldByInternalName("ID").Title; grdMyTickets.Columns.Add(colTicketTypology); [..] This works. Now, what a grid does behind the scene when binding data to it is cycling through the binded data. How can I access the "Current Item" to make operations on each item while binding? Thanks

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• IIS, Impersonation and COM Interop Premission Denied

  - by user315690

  Hello we are in the throws of integrating a Document Management System with Dynamic CRM 4, have done similar things previously but in this instance we are having to reference a COM dll. We've configured the asp.net page (we are bringing the info in via a i-Frame in CRM), setting Impersonation = True in the Webconfig and ensured that Windows authentication is the only method available within IIS. All works as we would expect when logged into the server itself and the page happily does off finds all the relevant documents for the CRM account and presents them to a user in a nice Infragistics CRM styled grid. However trying this from a client workstation we get the following: System.Runtime.InteropServices.COMException (0xC0042335): Permission denied. Impersonation appears to be passing over the correct details but nothing we've tried thus far has been able to make this work outside of logging into the server. Any thoughts as to what we are missing?

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