Search Results

Search found 1726 results on 70 pages for 'wolfram alpha'.

Page 47/70 | < Previous Page | 43 44 45 46 47 48 49 50 51 52 53 54  | Next Page >

• Latex editor for windows that works with unicode

  - by Anna

  Hello, I need to write Hebrew text in Latex. I am currently working on Windows with TeXnicCenter. I was pretty happy with this tool, up until the time when I needed to write Hebrew text. My regular alt-shift just won't change the language (I even downloaded the last alpha version, which was supposed to solve the problem, but it didn't). So I'm looking for another latex editor for windows that will let me write Hebrew. Please advice. Note: I know that it is possible with Lyx, but I prefer a real Latex editor.

  Read the article

• Set tag and hidden for objects on custom UITableViewCell

  - by Rob

  I am re-using Apple's AdvancedTableViewCells example to create a custom, fast-scrolling tableview. Specifically, I am using their CompositeSubviewBasedApplicationCell method which draws the content on the tableviewcell with drawRect Everything works, but how do you hide a label or set the tag for a label or image using their method? Doing it this way is pretty new to me (without IB), so I apologize ahead of time if it's something easy. The code that sets the cell content is: - (void)drawRect:(CGRect)rect { [_cell.animalIcon drawAtPoint:CGPointMake(5.0, 5.0)]; [_cell.animalName drawAtPoint:CGPointMake(93.0, 25.0)]; _highlighted ? [[UIColor whiteColor] set] : [[UIColor colorWithWhite:0.23 alpha:1.0] set]; [_cell.animalDescription drawAtPoint:CGPointMake(100.0, 54.0) withFont:[UIFont boldSystemFontOfSize:13.0]]; [_cell.animalNameString drawAtPoint:CGPointMake(93.0, 5.0) withFont:[UIFont boldSystemFontOfSize:13.0]]; }

  Read the article

• Memory over-release problem when I am animating UIView

  - by Sheehan Alam

  I have enabled NSZombie's and I am getting the following message in my console when I am running my application: *** -[UIViewAnimationState release]: message sent to deallocated instance 0xf96d7e0 Here is the method that is performing the animation -(void)loadAvatar:(STObject*)st { NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; avatar.alpha = 0; avatar.frame = avatarRectSmall; avatar.image = [ImageCache getMemoryCachedImageAtUrl:st.avatar_url]; [UIView beginAnimations:nil context:nil]; [UIView setAnimationDuration:.50]; avatar.frame = avatarRectNormal; [avatar setAlpha:1]; [UIView commitAnimations]; [pool release]; pool = nil; } I don't always get a crash, only sometimes. I'm wondering what is getting released?

  Read the article

• Why does UIImageView "darken"/saturate PNG images, and can I stop it?

  - by Ben

  I have a PNG file in a UIImageView, and next to that I have an EAGLView which displays the continuation of that same image (long story) as a texture, carved from the same original PNG. The point is, that these images, which should match up flawlessly, actually have somewhat differing color saturation. Normally I'd blame my handling of the PNG texture load in GL, but when I hold Preview (with the PNG) up to the iPhone simulator, it's GL that's spot on, and the UIImageView that's wrong! It's taken the image and made it ever-so-slightly more saturated. The image view is opaque with 100% alpha. I verified this on a clean UIImageView with another PNG file when put next to Preview. Anyone know what's up?

  Read the article

• Making large toolbars like the iPod app

  - by andybee

  I am trying to create a toolbar programatically (rather than via IB) very similar to the toolbar featured in the iPhone app. Currently I've been experimenting with the UIToolbar class, but I'm not sure how (and if?) you can make the toolbar buttons centrally aligned and large like that in the iPod app. Additionally, regardless of size, the gradient/reflection artwork never correctly respects the size and is stuck as if the object is the default smaller size. If this cannot be done with a standard UIToolbar, I guess I need to create my own view. In this case, can the reflection/gradient be created programmatically or will it require some clever alpha tranparency Photoshopped artwork?

  Read the article

• linq to xml. read. and assign to ViewData..noob

  - by raklos

  I have some xml similar to this: <?xml version="1.0" encoding="utf-8" ?> <data> <resources> <resource key="Title">Alpha</resource> <resource key="ImageName">Small.png</resource> <resource key="Desc">blah</resource> </resources> </data> using linq-xml how can i assign each resource here as a key value pair with the ViewData collection. Thanks.

  Read the article

• How to achieve a palette effect on iPhone using OpenGL

  - by Joe

  I'm porting a 2d retro game to iPhone that has the following properties: targets OpenGL ES 1.1 entire screen is filled with tiles (textured triangle strip tile textured using a single 256x256 RGBA texture image the texture is passed to OpenGL once at the start of the game only 4 displayed colours are used one of the displayed colours is black The original game flashed the screen when time starts to run out by toggling the black pixels to white using an indexed palette. What is the best (i.e. most efficient) way to achieve this in OpenGL ES 1.1? My thoughts so far: Generate an alternative texture with white instead of black pixels, and pass to OpenGL when the screen is flashing Render a white poly underneath the background and render the texture with alpha on to display it Try and render a poly on top with some blending that achieves the effect (not sure this is possible) I'm fairly new to OpenGL so I'm not sure what the performance drawbacks of each of these are, or if there's a better way of doing this.

  Read the article

• Simple but efficient way to store a series of small changes to an image?

  - by finnw

  I have a series of images. Each one is typically (but not always) similar to the previous one, with 3 or 4 small rectangular regions updated. I need to record these changes using a minimum of disk space. The source images are not compressed, but I would like the deltas to be compressed. I need to be able to recreate the images exactly as input (so a lossy video codec is not appropriate.) I am thinking of something along the lines of: Composite the new image with a negative of the old image Save the composited image in any common format that can compress using RLE (probably PNG.) Recreate the second image by compositing the previous image with the delta. Although the images have an alpha channel, I can ignore it for the purposes of this function. Is there an easy-to-implement algorithm or free Java library with this capability?

  Read the article

• mysql random generated value

  - by bbutle01

  I need to generate a random alpha/numeric to give to users that they come to the site to enter. I dont' know much about random numbers and such, I know there are seeding issues and such, but I'm not sure what they are. So, I used this: select substrING(md5(concat_ws('-',md5(username_usr), MD5(zip_usr), MD5(id_usr), MD5(created_usr))),-12) from users_usr Is this safe? I used concat_ws because sometimes zip is null, but the others never are. And yes, I know this is kinda short, but 1. They have to enter the last 4 of their social, 2. It's 1 time use, 3. There's no private data displayed back in the application and 4. I may use captcha, but since there's no private data, thats probably overkill. THanks

  Read the article

• How do I create an 8-bit PNG with transparency from an NSBitmapImageRep?

  - by Rob Keniger

  I have a 32-bit NSBitmapImageRep which has an alpha channel with essentially 1-bit values (the pixels are either on or off). I want to save this bitmap to an 8-bit PNG file with transparency. If I use the -representationUsingType:properties: method of NSBitmapImageRep and pass in NSPNGFileType, a 32-bit PNG is created, which is not what I want. I know that 8-bit PNGs can be read, they open in Preview with no problems, but is it possible to write this type of PNG file using any built-in Mac OS X APIs? I'm happy to drop down to Core Image or even QuickTime if necessary. A cursory examination of the CGImage docs didn't reveal anything obvious. EDIT: I've started a bounty on this question, if someone can provide working source code that takes a 32-bit NSBitmapImageRep and writes a 256-color PNG with 1-bit transparency, it's yours.

  Read the article

• Utilise Surv object in ggplot or lattice

  - by Misha

  Anyone know how to take advantage of ggplot or lattice in doing survival analysis? It would be nice to do trellis/facet like survival graphs. So in the end I played around and sort of found a solution for a kaplan meier plot. Apologize for the messy code in taking the list elements into a dataframe, but I couldnt figure out another way. Note: It only works with two levels of stratum. If anyone know how I can use x<-length(stratum) to do this please let me know (in stata I could append to a macro-unsure how this works in R)... ggkm<-function(time,event,stratum) { m2s<-Surv(time,as.numeric(event)) fit <- survfit(m2s ~ stratum) f$time<-fit$time f$surv<-fit$surv f$strata<-c(rep(names(fit$strata[1]),fit$strata[1]),rep(names(fit$strata[2]),fit$strata[2])) f$upper<-fit$upper f$lower<-fit$lower r<-ggplot (f,aes(x=time,y=surv,fill=strata,group=strata))+geom_line()+geom_ribbon(aes(ymin=lower,ymax=upper),alpha=0.3) return(r) }

  Read the article

• Changing text size on a ggplot bump plot

  - by Tom Liptrot

  Hi, I'm fairly new to ggplot. I have made a bumpplot using code posted below. I got the code from someones blog - i've lost the link.... I want to be able to increase the size of the lables (here letters which care very small on the left and right of the plot) without affecting the width of the lines (this will only really make sense after you have run the code) I have tried changing the size paramater but that always alter the line width as well. Any suggestion appreciated. Tom require(ggplot2) df<-matrix(rnorm(520), 5, 10) #makes a random example colnames(df) <- letters[1:10] Price.Rank<-t(apply(df, 1, rank)) dfm<-melt(Price.Rank) names(dfm)<-c( "Date","Brand", "value") p <- ggplot(dfm, aes(factor(Date), value, group = Brand, colour = Brand, label = Brand)) p1 <- p + geom_line(aes(size=2.2, alpha=0.7)) + geom_text(data = subset(dfm, Date == 1), aes(x = Date , size =2.2, hjust = 1, vjust=0)) + geom_text(data = subset(dfm, Date == 5), aes(x = Date , size =2.2, hjust = 0, vjust=0))+ theme_bw() + opts(legend.position = "none", panel.border = theme_blank()) p1 + theme_bw() + opts(legend.position = "none", panel.border = theme_blank())

  Read the article

• How to refresh to entire device's screen (Windows Mobile)?

  - by walidad

  Hi everybody, I'm working on a simple application that draws an alpha-blended picture on the screen's Device Context every 2 secs, I want to refresh the screen contents before the drawing operation (To erase the drawn pic), I have used many many trick but unfortunately, the screen won't refresh correctly, some regions still keep portions of the drawn pic I'm really frustrated from this issue :( These are the sources codes I have used, I'm using C# SendMessage(HWND_BROADCAST, WM_SYSCOLORCHANGE, IntPtr.Zero, IntPtr.Zero); // wasted time in the refreshing process is enough to keep this. UpdateWindow(HWND_BROADCAST);// does not work at all! InvalidateRect(IntPtr.Zero,IntPtr.Zero,true); // the same goes here. SendMessage(HWND_BROADCAST, WM_PAINT, IntPtr.Zero, IntPtr.Zero); // pfffff ! SendMessage(HWND_BROADCAST, WM_SETTINGCHANGE, new IntPtr(SPI_SETNONCLIENTMETRICS), IntPtr.Zero); // trying to refresh the explorer, no resutl I used also EnumWindows and call back , very slow and does not fit my case. I wanna refresh the whole screen Help please! Regards Waleed

  Read the article

• Delphi form icons are blurry on Windows 7's taskbar (with MainFormOnTaskbar enabled)

  - by Dennis G.

  We have a Windows desktop application written in Delphi that works fine on Windows 7, except that the icon of the main form looks blurry in Windows' new taskbar. As long as the application has not been started the icon looks fine (i.e. when it's pinned to the taskbar). Once it has been started Windows uses the icon of the main form (instead of the .exe resource icon) and it's blurry (it looks like a 16x16 version of the icon is scaled up). The icon that we use for the .exe and for the main form are exactly the same and it contains all kinds of resolutions, including 48x48 with alpha blending. My theory is that Delphi ignores/deletes the extra resolutions of the icon when I import the .ico file for the main form in Delphi. Is there a way to prevent/fix this? What's the best way to ensure that an application written in Delphi uses the correct icon resolution in Windows 7's taskbar?

  Read the article

• Developing Silverlight 1.0 Applications on VS2008 SP1

  - by Moo

  Hi, Can anyone point me to any guides, howto's or general documentation on how to develop Silverlight 1.0 (it has to be 1.0) on VS2008 SP1. I have searched high and low for information, and it all seems to be out of date (referencing Silverlight 1.0 Tools for Visual Studio 2008 beta, release candidate and alpha packages) or just plain doesn't work under VS2008 SP1. What do I need to install, and which project do I need to create? I have installed the Silverlight 1.0 SDK, which gave me no starting point, the Silverlight 2.0 Tools for Visual Studio after a website suggested you could use that to develop 1.0 apps, but the suggested template doesn't exist, and Silverlight 3.0 Tools for Visual Studio, which was a last ditch resort. Regards Moo

  Read the article

• Background repat in Flex 3

  - by Tom

  Hello everybody, I am trying to set a background to a canvas, and set an repeat-x on it. But anything I try don't work. I am using this code: <mx:Style> Canvas.topbar { borderColor: yellow; alpha: 1.0; backgroundImage: url('../assets/images/header.png'); backgroundRepeat: x-repeat; } </mx:Style> <mx:Canvas height="25" top="0" left="0" right="0" styleName="topbar"> <mx:Label x="2" y="4" text="{system_name} {system_version}" height="15"/> </mx:Canvas> But it won't work:( What is wrong with the code?

  Read the article

• Using a "local" S3 emulation layer as a replacement for HDFS?

  - by user183394

  I have been testing out the most recent Cloudera CDH4 hadoop-conf-pseudo (i.e. MRv2 or YARN) on a notebook, which has 4 cores, 8GB RAM, an Intel X25MG2 SSD, and runs a S3 emulation layer my colleagues and I wrote in C++. The OS is Ubuntu 12.04LTS 64bit. So far so good. Looking at Setting up hadoop to use S3 as a replacement for HDFS, I would like to do it on my notebook. Nevertheless, I can't find where I can change the jets3t.properties for setting the end point to localhost. I downloaded the hadoop-2.0.1-alpha.tar.gz and searched the source without finding out a clue. There is a similar Q on SO Using s3 as fs.default.name or HDFS?, but I want to use our own lightweight and fast S3 emulation layer, instead of AWS S3, for our experiments. I would appreciate a hint as to how I can change the end point to a different hostname. Regards, --Zack

  Read the article

• Adding Filters to List

  - by Tom Hodder

  I have a List which looks like the following: http://jsfiddle.net/UwPTF/ <ul class="uol"> <li>beta</li> <li>gamma</li> <li>alpha</li> <li>beta</li> <li>zeta</li> <li>BETA</li> </ul> I have 2 buttons, one to highlight the items that are duplicate and the other to remove the duplicate items. I am trying to use the filter function. If you can explain your code, it's highly appreciated.

  Read the article

• Extremely slow insert from Delphi to Remote MySQL Database

  - by MarkRobinson

  Having a major hair-pulling issue with extremely slow inserts from Delphi 2010 to a remote MySQL 5.09 server. So far, I have tried: ADO using MySQL ODBC Driver Zeoslib v7 Alpha I have used batching and direct insert with ADO (using table access), and with Zeos I have used SQL insertion with a Query, then used Table direct mode and also cached updates Table mode using applyupdates and commit. Both technologies I have tried with compression on and off. So far I have seen a pretty much the same across the board 7.5 records per second!!! Now, I would from this point assume that the remote server is just slow, but the MySQL Workbench is amazingly fast, and the Migration toolkit managed the initial migration very quickly (to be honest, I don't recall how quickly - which kind of means that it was quick) I'm just about to try the MyDAC components as we already use SDAC (wish there was a multi-buy discount or that we'd chosen UniDAC instead now!) Any ideas?

  Read the article

• Solid FFmpeg wrapper for C#/.NET

  - by Lillemanden

  I have been searching the web for some time for a solid FFmpeg wrapper for C#/.NET. But I have yet to come up with something useful. I have found the following three projects, but all of them apears to be dead in early alpha stage. FFmpeg.NET ffmpeg-sharp FFLIB.NET So my question is if anyone knows of a wrapper project that is more mature? I am not looking for a full transcoding engine with job queues and more. Just a simple wrapper so I do not have to make a command line call and then parse the console output, but can make method calls and use eventlisteners for progress. And please feel free to mention any active projects, even if they are stil in the early stages.

  Read the article

• MySQL SET and ENUM types in CakePHP framework

  - by Andrew Bashtannik

  Hi! I need to use SET and ENUM types in my CakePHP 1.3 project. I found some advices, but all them are too old (2004-2006) and full of crazy methods, like modifying cake's core files. Also, CakePHP developers said that SET and ENUM types are not supported. Example: I have SET('alpha','beta') field, and I need to use this data as checkboxes in add & edit actions. Is there any way to add normal support (Form helpers etc.) of SET and ENUM fields?

  Read the article

• How can I avoid floating the same content twice?

  - by Randall Bohn

  My Kynetx app uses float_html() to put up a box full of content. rule float_box { select when pageview ".*" pre { content = << <div id='messagebox'> <h3>Floating Message Box</h3> <ul id='my_list'></ul> </div> >>; } float_html("absolute","top:25px","right:20px",content); } rule fill_box { select when pageview ".*" foreach ["alpha","bravo","charlie"] setting (list_item) append("#my_list", "<li>#{list_item}</li>"); } The app (a421x27) is used from a bookmarklet. If you click the bookmarklet twice on the same page you get double content. Is there any way to detect that the box is already on the screen and reuse it?

  Read the article

• How to regex match a string of alnums and hyphens, but which doesn't begin or end with a hyphen?

  - by Shahar Evron

  I have some code validating a string of 1 to 32 characters, which may contain only alpha-numerics and hyphens ('-') but may not begin or end with a hyphen. I'm using PCRE regular expressions & PHP (albeit the PHP part is not really important in this case). Right now the pseudo-code looks like this: if (match("/^[\p{L}0-9][\p{L}0-9-]{0,31}$/u", string) and not match("/-$/", string)) print "success!" That is, I'm checking first that the string is of right contents, doesn't being with a '-' and is of the right length, and then I'm running another test to see that it doesn't end with a '-'. Any suggestions on merging this into a single PCRE regular expression? I've tried using look-ahead / look-behind assertions but couldn't get it to work.

  Read the article

• Is there a way in PHP to check if a directory is a symlink?

  - by tixrus

  The title says it all. I have symlinks to certain directories because the directories' names have non English characters that I got fed up trying to get apache's rewrite rules to match. There's a bounty on that question http://stackoverflow.com/questions/2916194/trouble-with-utf-8-chars-apache2-rewrite-rulesif anyone wants to go for it, and from the looks of things a lot of people would like to see a general solution to this problem, but meanwhile I made a plain ascii symlink to each of these offending directories. Now the rewrite rules are back to just alpha and _ and - and my security concerns are less and it loads the resources I want. But I still need the actual target directory name for display purposes. I googled "PHP directory info, PHP symlink" but didn't find anything. I need to do something like this: if (is_symlink($myResDirName)) { $realDirName = follow_symlink($myResDirName); }

  Read the article

• How does Bitmap.Save(Stream, ImageFormat) format the data?

  - by Matt Jacobsen

  I have a non transparent, colour bitmap with length 2480 and width 3507. Using Bitmap.GetPixel(int x, int y) I am able to get the colour information of each pixel in the bitmap. If I squirt the bitmap into a byte[]: MemoryStream ms = new MemoryStream(); bmp.Save(ms, ImageFormat.Bmp); ms.Position = 0; byte[] bytes = ms.ToArray(); then I'd expect to have the same information, i.e. I can go to bytes[1000] and read the colour information for that pixel. It turns out that my array of bytes is larger than I anticipated. I thought I'd get an array with 2480 x 3507 = 8697360 elements. Instead I get an array with 8698438 elements - some sort of header I presume. In what format the bytes in my array stored? Is there a header 1078 bytes long followed by Alpha, Red, Green, Blue values for every byte element, or something else?

  Read the article

< Previous Page | 43 44 45 46 47 48 49 50 51 52 53 54  | Next Page >