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There is a nice function plotter built into OSX. Has anyone found something free that runs on windows (with out having to go through Cygwin)?
How about MathGV - Function Plotting Software?
Also, DME Calculator is a calculator that can plot functions.
The DME calculator is an advanced
calculator for Windows. It is a part
of the program package for controlling
our instruments. However, in its basic
version it can be of use for anyone
who wishes to make calculations with a
PC or wishes to solve somewhat more
complex problems without having to use
a large spreadsheet program package.
The DME calculator fits on a diskette
and starts without any notable waiting
time.
If by functions, you mean mathematical functions, there is a nice list here which has plenty of suggestions.
Wolframalpha.com
excellent for many branches of academia. it also plots.
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I'm thinking about creating a bot that would solve some (html) puzzle games using a pre-defined strategy.
My question : is there any ruby libraries that would allow to "read screen" (i.e. check the colors of some pixels on screen) and apply actions (like clicking somewhere, or "press right key" ? )
I know this would be quite easy in python, but I was just wondering wether ruby could do that to save me some time.
Thanks !
I would do this with Capybara and some nice JavaScript driver like Poltergeist. You can send key commands, click on precise coordinates and take screenshoots. For image manipulation and processing I suggest that you look into chunky_png.
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I hoping to create an application that would listen to ambient sound and detect if music is being played. It is not important to identify the music being played; just detecting that some music is being played is enough.
I looked around for existing solutions but couldn't find any. Does anyone know algorithms that I can use to solve this problem? If source code is available, all the better.
I found are a couple of academic papers and implemented solutions suggested in them. But the results I obtained were not satisfactory.
PS:
i) It would be a bonus if the algorithm is not computationally intensive; if algorithm is completely in time-domain that would be wonderful. ii) It is okay if the solution is not very accurate; occasional false-positives are okay.
Under the assumption that music is made of a bunch of chords instead of single pitch (like monophonic MIDI), multiple pitches at the same time (aka, the chords) may be a good candidate to be detected and differentiated from pure noise. Actually there is a very good Harmony Progression Analyser software package in which chords are detected based on a chromagram. Hope it helps.
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I am a newbie in Matlab field. And i want to learn more about methodology to comparing 2 images to know the similarity between them.
I need more information in international journal / international proceeding, book or another reprort that describe about it.
I Will use it as my literature study.
Is there any suggestion what is the similar journal,book or proceeding that has discussed about it? If has, please include the title and link of them..
Thank You for the attention.
For journals I would recommend the IEEE Transactions on Image Processing:
http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=83
This is a good general intro from MIT:
http://www.mit.edu/~ka21369/Imaging2012/tannenbaum.pdf
You need to define "similarity" better.
In the image compression sense, similarity is a function of the pixel-wise difference between the images (PSNR, and other metrics).
In a computer vision sense, you would want to see if the two images contain similar content such as objects or scenes. I would recommend using Google Scholar for that.
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im trying to program a game in Haskell. Ive been looking for Game frameworks for that purpose, but i found a few and i cant make them work :/ . All i need is some image processing as pygames provides in python, like moving images, using layouts to put one image above other, and such basic things.
Do you happen to know anyone?
I was writing a library called TeaHS which is something like what you want. It's old and potentially bitrotted though, and I don't really have time to update it. Fork it if you like :)
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Hi I need to graph some arrays to analyse signals, I have a cocoa project going. Can anyone tell me where I can find tools to simplify this task?
Basically i want to display my arrays like on a graphing calculator.
Even though it's a young library, I'd suggest looking at the open source Core Plot framework. It works on Mac and iPhone and can currently plot line and bar charts. As I said, it's young and a lot of the core functionality is still being written, but it might work right now for your case.
Take a look at this post to the Apple mailing lists. http://lists.apple.com/archives/scitech/2007/Jun/msg00022.html
It mentions 3 potential graphing packages that you can try. I have not had personal experience with them, so buyer beware, but it will at least give you a start on where to look.
XCode allows you to create data formatters to present object data in the debugger, but it doesn't provide any way to graphically represent the data using charts or graphs. (At least, not that I know of!) I think that's beyond the scope of XCode. You might consider dumping the data from your array to a file using a bit of code or the console, and then loading it into Excel or MATLAB. Then you can create a graph of your signal with no problem.
Just out of curiosity, are you familiar with another IDE that provides graphs of array data? I know tools like MATLAB and Mathematica do it pretty nicely, but I've never seen it in an IDE.