similar to: Visualising Moving Vectors

I sent a mail last week asking for some advise in relation to displaying wind vectors on a contour map of a region. Whilst I have had some useful feedback relating to the second part of this question (namely how to animate a time series of still frames), I haven't recieved any advise on how I might create the still images of the spatially distributed wind vector data at any given time point.

hi, is it possible to resize animated gifs with file_column? if i upload an animated gif file with file_column than the animation no longer exists... -- Posted via http://www.ruby-forum.com/.

Dear all, I have used RMagic to read and write a image while uploading. An animated gif was read from my local machine and was written in my images folder using RMagick. But the animated gif which i read was witten in my folder without animation. What should i do to write the gif image with animation. Here is my code to read and write image while uploading. image = params[:image][:blob]

I''m using Prototype/Scriptaculous on a large web app. Everything runs briskly in IE, and everything runs briskly in Firefox except for one page. On this page, only in Firefox, any code that touches Prototype runs very, very slowly. In particular: I use Effect.BlindDown/BlindUp for dropdown menus. Same html and css on all pages. Flies along on all the other pages; here BlindDown crawls,

hi in my application i have a photo gallery page where i showing all my album photos, i want to developed a functionality where i can rotate photo there and and saved backed to file system. how it is possible ? -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on

Hi, this may sound like a very stupid question and perhaps it is, so I apologise in advance if anyone feels bored by it. I have done some principal component analysis with prcomp and what I would like to do is to visualise the effect of a principal component, i.e. show a graph of my data and then show how that graph would change if I go, let's say, one standard deviation, in either

Dear R users, I have used the following function (in blue) aiming to find the linear regression between MOE and XLA and nesting my data by Species. I have obtained the following results (in green). model4<-lme(MOE~XLA, random = ~ XLA|Species, method="ML")summary(model4) Linear mixed-effects model fit by maximum likelihood Data: NULL         AIC     BIC   logLik  -1.040187 8.78533

OK, I needed to plot a set of vectors on top of a contour plot. I figured out a way to do this. I create a panel function that calls "larrows()" with arguments constructed from my vector data. Then, when I go to do the contour plot, I call contourplot() with the "panel" argument set to point to my newly created panel function. So far, so good. Now, I need to do a

I''m going to be generating thumbnails from user uploaded images. I''m looking around at the libraries available to do this sort of thing and there are three that look promising. ImageScience -- http://seattlerb.rubyforge.org/ImageScience.html Mini-Magick -- http://rubyforge.org/projects/mini-magick/ RMagick -- http://rmagick.rubyforge.org/ It looks like a lot of people are

Hey, I have got a script that returns a long list of font family names, which I all want to store in a variable (array). I tried doing this with @f = font.family also in the for loop below but it only prints the last item when I want to display the results. require ''rubygems'' require ''RMagick'' include Magick for font in Magick.fonts puts font.family end

Hi there, I''d like to use RMagick to watermark an image in the tmp directory before Attachment_fu saves it to Amazon S3. I took a look at the callbacks available in attachment_fu. There''s an ''after_attachment_saved'' method but this would be too late, and a ''before_thumbnail_saved'' but this is no good because it''s for thumbnails. I

Dear R-helpers, Is it possible to create a type of 'movie' in R based on the output of several figures (e.g., jpegs) via the plot() function. I obtained dynamic results with the plotting function and would like to save these as a movie (e.g., avi or other formats)? Regards, Jan _________________________________________________________________ Ir. Jan Verbesselt Research

I''m running file_column 0.3.1, and having a few problems... which are: - Uploading a 378x567 jpg, and using :magick => {:geometry => "100x100" }, my image ends up being 67x100 ? Is there a way to "force" the image to be the size you specify ? - My view has a drop-down of sizes, and I''m trying to pass in this size into :magick =>

Hi, I''m using the basic magick features of file_column, and while files are uploading fine without the magick options, as soon as I do something like :magick => { :size => "400x600" } I get an ''invalid file'' error. Further investigation reveals that the file is in fact invalid because something somewhere is truncating the file path:

Hi all, I patched file_column to add imagemagick transformations of uploaded content. I added an options hash, and it takes the :magick and :format keys. :magick is a string of imagemagick command line options for convert (Reference: http://www.imagemagick.org/script/convert.php). Format is an optional extension for the finished image. If Imagemagick recognizes the extension, then it will

I have a file rmg.rb: require ''RMagick'' include Magick cat = ImageList.new("prod.jpg") cat.display exit The file prod.jpg is in the same directory as this file above. I execute the following: ruby rmg.rb I get the following output: /usr/lib/ruby/1.8/RMagick.rb:1377:in `read'': unable to open image `'': No such file or directory:

hi.. I am using attachment_fu in my project i want to know that which of following library is good please help me 1>imagemagick 2>RMagic -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to

I am getting this following error when using file_column with RMagick: uninitialized constant Magick /usr/local/lib/ruby/gems/1.8/gems/activesupport-1.2.5/lib/ active_support/dependencies.rb:200:in `const_missing'' ./script/../config/../vendor/plugins/rails_file_column/plugins/ file_column/branches/kyle/lib/file_column.rb:621:in `file_column''

Several map providers have functions to pan to a location, as opposed to the direct setCenter call. Panning animates the move from one point to another. To implement this in mapstraction, I created a panCenter function. I don''t know how to go about committing the change to svn, or who decides whether my naming convention is worthy, but I thought I''d share the function

I am using RMagick in my app and am having problems in deployment. The deployment machine (Fedora Core 5) can''t find RMagick unless I change the "require" syntax from that used on the dev machine (OS X). And the dev machine doesn''t like the syntax that works on the deployment server! To wit: [OS X] $ script/console Loading development environment. >> require_gem