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• Modifying an image with OpenGL ?

  - by chmike

  I have a device to acquire XRay images. Due to some technical constrains, the detector is made of heterogeneous pixel size and multiple tilted and partially overlapping tiles. The image is thus distorted. The detector geometry is known precisely. I need a function converting these distorted images into a flat image with homogeneous pixel size. I have already done this by CPU, but I would like to give a try with OpenGL to use the GPU in a portable way. I have no experience with OpenGL programming, and most of the information I could find on the web was useless for this use. How should I proceed ? How do I do this ? Image size are 560x860 pixels and we have batches of 720 images to process. I'm on Ubuntu.

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• How to find/display the Upload File limits on IIS with ASP.NET?

  - by NVRAM

  I have a web service on which the end users will be uploading ZIP archives that can be very large (one test file is over 200MB). I'd like to handle oversized files proactively and size-limited upload failures gracefully. Since the web app will be deployed on customers' machines, so I cannot easily ensure that the configuration matches any fixed size. I've documented how to use the appcmd command for them to set the requestLimits.maxAllowedContentLength value beyond the 30MB default. But I'd like to handle it in the web app; I'm hoping for two things: To show the current limit on the page where they initiate the file upload, something along the lines of: Each file upload is limited to 15MB. If your archive is larger, (etc., etc., etc.) To give a meaningful error when that size is exceeded. Currently, it takes a long time for the data to be sent, and then I see a misleading 404 page. Any thoughts?

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• How to write a custom control, which can auto resize just like TextBox in a grid cell?

  - by Cooper.Wu

  I have tried to override MeasureOverride, but the available size will not change when i resize a grid. which contains my control. class MyFrameworkElement : FrameworkElement { override Size MeasureOverride(Size available) { this.Width = available.Width; this.Height = available.Width this.UpdateLayout(); // do something... } } This works only when application start. How to implement a auto resize control, just like a TextBox in a grid cell. The TextBox will auto resize to fill grid cell if grid resized.

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• Loop with pointer arithmetic refuse to stay within boundary in C. Gives me segfault.

  - by Fred

  Hi have made this function which is made to replicate an error that I can't get past. It looks like this: void enumerate(double *c, int size){ while(c < &c[size]){ printf("%lf\n", *c); c++; } } I have added some printf's in there and it gives me: Adressof c: 0x100100080, Adressof c + size: 0x1001000a8 I then also print the address of c for each iteration of the loop, it reaches 0x1001000a8 but continues past this point even though the condition should be false as far as I can tell until I get a segfault. If anyone can spot the problem, please tell me, I have been staring at this for a while now. Thanks.

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• Maven easyb plugin java heap space settings?

  - by vinnu

  Hi, I attempted to change my heap size for maven easyb plugin http://www.easyb.org/maven-easyb-plugin/. In my easyb test I added standard code to print the heap size using the code Runtime.getFreeMemory() and Runtime.getTotalMemory(). I tried setting the MAVEN_OPTS=-Xmx1024m -Xms1024m and also set the maven opts in Maven surefire plugin. Now when I run the same class from the Junit I can see the getTotalMemory() displaying a number close 1Gig but the when the same classes are invoked from easyb plugin they do not reflect the memory size. Shouldn't there be a way of passing JVM opts to maven easyb plugin when it runs these easyb tests? At the very minimum it should atleast pick up the MAVEN_OPTS settings from the environment. Has someone bumped into problems like this? (A search on this group's archive does not reveal much)

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• can i changed for loop index variable inside the loop in Matlab???

  - by shawana

  hi every one. i need to change my loop variable inside the iterationa as ihave to acces array elements in the loop which is changing w.r.t size inside the loop. ashort piece of code is that: que=[]; que=[2,3,4]; global len; len=size(que,2) x=4; for i=1:len if x<=10 que(x)= 5; len=size(que,2) x=x+1; end end que array should print like: 2 3 4 5 5 5 5 5 5 5 but it is printed in such a way: 2 3 4 5 5 5. how shuould it be accomplished in matlab? in visual c++ it happen correctly and print whole array of 10 elements which increases at run time plz reply me if have any ideaabout this as i m new into matlab

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• join select from multiple row values?

  - by user1869132

  Two tables 1) product -------------------- id | Name | price 1 | p1 | 10 2 | p2 | 20 3 | p3 | 30 2) product_attributes: --------------------------------------------------- id | product_id | attribute_name | attribute_value --------------------------------------------------- 1 | 1 | size | 10 2 | 1 | colour | red 3 | 2 | size | 20 I need to join these two tables. In the where clause I need to match both the two rows attribute values. Is it possible to get the result based on two rows value. Here if size=10 and colour=red. Output should be 1 | p1 | 10 It could be greatly helpful to get a query for this.

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• Validation file upload CakePHP

  - by kicaj

  How validate file upload in CakePHP? When i wrote some like this:var $validate = array( 'file' => array( 'select' => array( 'rule' => array('selectFile', false), 'message' => 'There is no file!'), 'type' => array( 'rule' => array('typeFile'), 'message' => 'Bad type!'), 'size' => array( 'rule' => array('sizeFile'), 'message' => 'Bad with size!'))); Works only with the last validate, here 'size'. Maybe You know solution, for validation for files with many messages?

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• small string optimization for vector?

  - by BuschnicK

  I know several (all?) STL implementations implement a "small string" optimization where instead of storing the usual 3 pointers for begin, end and capacity a string will store the actual character data in the memory used for the pointers if sizeof(characters) <= sizeof(pointers). I am in a situation where I have lots of small vectors with an element size <= sizeof(pointer). I cannot use fixed size arrays, since the vectors need to be able to resize dynamically and may potentially grow quite large. However, the median (not mean) size of the vectors will only be 4-12 bytes. So a "small string" optimization adapted to vectors would be quite useful to me. Does such a thing exist? I'm thinking about rolling my own by simply brute force converting a vector to a string, i.e. providing a vector interface to a string. Good idea?

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• Install Script Question

  - by Michael Dobbins

  Sorry if this has been discussed, wasn't sure what to use to search for the particular question I had. I'm installing sickrage and couchpotato and headphones, and will be doing multiple installs I made a small batch script just to install everything but what I don't know how to do is automatically make them auto start on boot. Since they all require a file to be created I do not know how to make this file auto create and populate what needs to be put into it.

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• jqGrid Additional POST datas when deleting

  - by user300657

  I want to delete a row in the grid, but the grid always post's only the id and oper, I also want to post additional data. My jqgrid is something like : jQuery("#editgrid").jqGrid({ url:'autoJSON.php', datatype: "xml", colNames:['RowID','Asigurator','Cilindree','Persoana', 'Perioada', 'Pret'], colModel:[ {name:'rowID',index:'rowID', width:60, editable:true}, {name:'idAsigurator',index:'idAsigurator', width:100, editable:true,editoptions:{size:20}}, {name:'cilindree',index:'cilindree', width:90, editable:true,editoptions:{size:20}}, {name:'persoana',index:'persoana', width:300,editable:true,edittype:"select",editoptions:{value:"Persoana juridica:Persoana juridica;Pensionar:Pensionar;Persoana fizica:Persoana fizica"}}, {name:'perioada',index:'perioada', width:120, align:"right",edittype:"select",editable:true,editoptions:{value:"12 luni:12 luni;6 luni:6 luni"}}, {name:'pret',index:'pret', width:80, align:"right",editable:true,editoptions:{size:20}} ], width:900, height:600, pager: '#pagered', sortname: 'rowID', viewrecords: true, sortorder: "desc", caption:"Autoturisme", editurl:"autoPOST.php", }); jQuery("#editgrid").jqGrid('navGrid',"#pagered",{edit:true,add:true,del:true}); What should I do to access in autoPOST.php rowID also as a post variable. Thanks

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• wxpython : button covers all in the frame

  - by Prakash

  Below is my code: #!/usr/bin/python # -*- coding: utf-8 -*- import wx class Example(wx.Frame): def __init__(self): #super(Example, self).__init__(parent, title=title, size=(300, 200)) wx.Frame.__init__(self, None, wx.ID_ANY, 'wxButton', pos=(300, 150), size=(320, 250)) self.button1 = wx.Button(self, id=-1, label='Button1', pos=(8, 8), size=(10, 20)) self.button1.Bind(wx.EVT_BUTTON, self.button1Click) self.Centre() self.Show() def button1Click(self,event): #self.button1.Hide() self.SetTitle("Button1 clicked") if __name__ == '__main__': app = wx.App() Example() app.MainLoop() Actually I am expecting the button1 on the frame to have a look like a button - a bit raised and be placed in center of frame - but it is just expanding to the full frame. Also text Button1 looks like a text which does not has a button look like feeling? What wrong am I doing?

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• Objective-C: how to allocate array of GLuint

  - by sashaeve

  I have an array of GLuint with fixed size: GLuint textures[10]; Now I need to set a size of array dynamically. I wrote something like this: *.h: GLuint *textures; *.m: textures = malloc(N * sizeof(GLuint)); where N - needed size. Then it used like this: glGenTextures(N, &textures[0]); // load texture from image -(GLuint)getTexture:(int)index{ return textures[index]; } I used the answer from here, but program fell in runtime. How to fix this? Program is written on Objective-C and uses OpenGL ES.

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• Screen Resolution Question VS2008 - C++ CLI

  - by MrMcC

  Hi, I have a program that has a SIZE of 800x600. I want to make this program expand if it is maximized, so that all the elements(buttons, picturebox's) change size to fit the new ratio depending on the users windows screen resolution. The way I am thinking to approach this is to take the users screen resolution and manual change the size of everything, and do this for all common resolutions, if a user has some rare resolution, ill just make it so the maximize/minimize buttons are disabled. But this will be very very time consuming as there are lots of elements in the forms, and their are multiple forms..... Basically, is there a shortcut? Perhaps a built in feature or some kind of add in for VS2008. What are some methods to tackle this issue?

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• Javascript text Resize

  - by blackessej

  Without getting into the "should a text resizer be used or not" debate, I'd like some help with this...suffice to say that my clientele are from and older generation and may be sight impaired... My script isn't functioning, and I'm not sure why. It's not live yet, so here's what I'm working with: function fsize(size,unit,id){ var vfontsize = document.getElementById("#colleft"); if(vfontsize){ vfontsize.style.fontSize = size + unit; } } var textsize = 14; function changetextsize(up){ if(up){ textsize = parseFloat(textsize)+2; }else{ textsize = parseFloat(textsize)-2; } } I'm using onclick events to trigger the size changes. Thanks for your help!

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• Problem with xor operation

  - by gavishna

  Kindly tell me why the original image is not coming with this code. The resulting image receive is yellowish in color,instead of being similar to the image Img_new Img=imread(‘lena_color.tif’); Img_new=rgb2gray(img); Send=zeroes(size(Img_new); Receive= zeroes(size(Img_new); Mask= rand(size(Img_new); for i=1 :256 for j=1:256 Send(i,j)=xor( Img_new(i,j),mask(i,j)); End End image(send); imshow(send); for i=1 :256 for j=1:256 receive(i,j)=xor( send(i,j),mask(i,j)); End End image(receive); imshow(receive); plz help

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• DirectX text at (x,y,z)

  - by bobobobo

  In OpenGL, you can actually draw text with an XYZ position, and it will appear at that location, but in a fixed size. If anyone's played MechWarrior 2, they used it there for nav points. The text had a 3d position, but it always appeared a fixed size. The nav point was actually a bit of text at that exact point in space. Other than that the ability to place 3d text was pretty much useless.. you'd always want text to be 2d, righT? I'm finally in a position where I want this feature. I have these points in space that I need to assign text information to, i.e. I need to draw text at a fixed size but with a 3d position. Can this be done from DirectX?

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• Setting the correct height of a UITableViewCell

  - by iOS explorer

  I'm trying to return the height of the detailTextLabel in the heightForRowAtIndexPath delegate method. This way my table view cells should be the same height as my detailTextLabel. - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath { UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath]; NSString *text = cell.detailTextLabel.text; CGSize size = cell.detailTextLabel.bounds.size; UIFont *font = cell.detailTextLabel.font; CGSize labelSize = [text sizeWithFont:font constrainedToSize:size lineBreakMode:UILineBreakModeWordWrap]; return labelSize.height; } However I'm getting a EXC_BAD_ACCESS on the following line: UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath]; Wats wrong with the above piece of code?

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• Dynamical array of strings in C

  - by Ir0nm

  I'm trying to make array of strings, I have function rLine which reads line from stdin, each inputted line I need to save in array, but I don't have any idea about number of inputted string lines. So I need to dynamically increase array size to store them, I wrote such code: char *res[2], *old = res; while( 1 ){ line = rLine( stdin ), len = strlen( line ); res[row] = (char*)malloc( len + 1); strcpy( res[row++], line); res = (char**) realloc( res, row ); /* adding 1 more row, not sure adding size row? */ if ( /*some cond*/ ) break; } But this code doesn't seem to work, how correctly declare array and increase it size?

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• Help with WinAPI scroll bars

  - by user146780

  Right now I have a window with horizontal ad vertical scrollbars. I use these parameters to initialize it. //Set OGL Frame scroll bar SCROLLINFO inf; inf.cbSize = sizeof(SCROLLINFO); inf.fMask = SIF_PAGE | SIF_POS; inf.nPage = 20; inf.nPos = 30; It creates them in the center and I like their size, but when I scroll I multiply by 50 which creates chopiness. How could I add more resolution to the bars and still keep the same thumb size. Is there a way I can calculate the size and position of the bar based on the above parameters? Thanks

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• transform file/directory structure into 'tree' in javascript

  - by dave

  I have an array of objects that looks like this: [{ name: 'test', size: 0, type: 'directory', path: '/storage/test' }, { name: 'asdf', size: 170, type: 'directory', path: '/storage/test/asdf' }, { name: '2.txt', size: 0, type: 'file', path: '/storage/test/asdf/2.txt' }] There could be any number of arbitrary path's, this is the result of iterating through files and folders within a directory. What I'm trying to do is determine the 'root' node of these. Ultimately, this will be stored in mongodb and use materialized path to determine it's relationships. In this example, /storage/test is a root with no parent. /storage/test/asdf has the parent of /storage/test which is the parent to /storage/test/asdf/2.txt. My question is, how would you go about iterating through this array, to determine the parent's and associated children? Any help in the right direction would be great! Thank you

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• Which web-safe fonts are more readable to eyes as a body text? Which web-safe fonts should not be us

  - by metal-gear-solid

  Which web-safe fonts are more readable to eyes as a body text? Which web-safe fonts should not be used? What should be the minimum font size of <p>body text</p> for better readability? What font size should we use for <H1/2/3/4/5/6>, <p> <ul>, <ol>? Should we use same font-size for <p>, <ul>, <ol> and <th> <td>? What would be the balanced typography font sizing scheme?

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• autoTab and allowed only numbers

  - by Abu Hamzah

  is there any easy way of implementing two feature 1) auto tab and 2) allowed only numbers i have a SSN box below as soon as the user enter three digits will skip to the next .. so on and so forth..... <TR> <TD nowrap><b>Social Security Number</b></TD> <TD align="left" nowrap colspan="4"> <INPUT NAME= "SSN1" TYPE= "TEXT" SIZE= "3" MAXLENGTH= "3" VALUE= ""> <INPUT NAME= "SSN2" TYPE= "TEXT" SIZE= "2" MAXLENGTH= "2" VALUE= ""> <INPUT NAME= "SSN3" TYPE= "TEXT" SIZE= "4" MAXLENGTH= "4" VALUE= ""> </TD> </tr> also i wanted to restrict to have only numbers.

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• Sql Table Refactoring Challenge

  Ive been working a bit on cleaning up a large table to make it more efficient.  I pretty much know what I need to do at this point, but I figured Id offer up a challenge for my readers, to see if they can catch everything I have as well as to see if Ive missed anything.  So to that end, I give you my table: CREATE TABLE [dbo].[lq_ActivityLog]( [ID] [bigint] IDENTITY(1,1) NOT NULL, [PlacementID] [int] NOT NULL, [CreativeID] [int] NOT NULL, [PublisherID] [int] NOT NULL, [CountryCode] [nvarchar](10) NOT NULL, [RequestedZoneID] [int] NOT NULL, [AboveFold] [int] NOT NULL, [Period] [datetime] NOT NULL, [Clicks] [int] NOT NULL, [Impressions] [int] NOT NULL, CONSTRAINT [PK_lq_ActivityLog2] PRIMARY KEY CLUSTERED ( [Period] ASC, [PlacementID] ASC, [CreativeID] ASC, [PublisherID] ASC, [RequestedZoneID] ASC, [AboveFold] ASC, [CountryCode] ASC)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]) ON [PRIMARY] And now some assumptions and additional information: The table has 200,000,000 rows currently PlacementID ranges from 1 to 5000 and should support at least 50,000 CreativeID ranges from 1 to 5000 and should support at least 50,000 PublisherID ranges from 1 to 500 and should support at least 50,000 CountryCode is a 2-character ISO standard (e.g. US) and there is a country table with an integer ID already.  There are < 300 rows. RequestedZoneID ranges from 1 to 100 and should support at least 50,000 AboveFold has values of 1, 0, or 1 only. Period is a date (no time). Clicks range from 0 to 5000. Impressions range from 0 to 5000000. The table is currently write-mostly.  Its primary purpose is to log advertising activity as quickly as possible.  Nothing in the rest of the system reads from it except for batch jobs that pull the data into summary tables. Heres the current information on the database tables size: Design Goals This table has been in use for about 5 years and has performed very well during that time.  The only complaints we have are that it is quite large and also there are occasionally timeouts for queries that reference it, particularly when batch jobs are pulling data from it.  Any changes should be made with an eye toward keeping write performance optimal  while trying to reduce space and improve read performance / eliminate timeouts during read operations. Refactor There are, I suggest to you, some glaringly obvious optimizations that can be made to this table.  And Im sure there are some ninja tweaks known to SQL gurus that would be a big help as well.  Ill post my own suggested changes in a follow-up post for now feel free to comment with your suggestions. Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Displaying same icon in 2 different sizes on c#

  - by ET

  My goal is to display the same icon twice, but each time in different size. I tried the following: FileStream fs = new FileStream("name_of_the_icon_file.ico", FileMode.Open); Icon ico = new Icon(fs, 32, 32); //create an in-memory instance of the icon, size 32x32 Icon ico2 = new Icon(fs, 16, 16); //create an in-memory instance of the icon, size 16x16 ... Graphics.DrawIcon(ico, /*some point*/); Graphics.DrawIcon(ico2, /*some other point*/); The last line throws an ArgumentException: Value does not fall within the expected range. Can some one explain me whats wrong and whats the way to do this right?

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