There is a matrix library for JavaScript that can be used in QC.
Though you can't link against it as such, it's relatively easy to
extract the bits you need to use in your own code.
The project is called Sylvester (for some reason).
http://sylvester.jcoglan.com/
Dunno what the licensing situation is with using chunks of it though.
You might want to contact the author about that.
a|x
http://machinesdontcare.wordpress.com
On 18 Aug 2009, at 13:57, Dick Applebaum wrote:
Jacob,
You can use JavaScript functions to manipulate strings of data,
such as a row of space-delimited numbers, into an array. See:
http://www.tizag.com/javascriptT/javascript-string-split.php
I don't know if JavaScript has any native functions to deal with
matrix manipulation, There may be third-party-developed JavaScript
packages that do this.
You can google JavaScript and matrix and see what's available.
If nothing, you could roll your own by adding each row array
(created above) to another array, a matrix array. Then, perform
any desired manipulations by iterating through the array of arrays....
BTW, you can do almost any text-manipulation you'd ever want (and
more) using RegExp (Regular Expressions). RegExps take a bit of
effort to learn but you will be handsomely rewarded for the
effort. RegExps can be found in Perl, PHP, JavaScript, OS X (Unix,
Linux) Command Line Interface, and many text editors. They are
often called "grep" in CLIs and Text Editors. Seriously, once you
learn to use
RegExps, you will wonder how you ever lived without them.
Dick
On Aug 17, 2009, at 3:17 PM, jacob Balthazor wrote:
I am from a research team at Cal Poly Pomona working on
developing laser based chemical analysis device. I am in charge of
software development and am I am looking for an approach on how to
read in a matrix of values from a text file in the formatting show
below and generate a gray scale image from this data on the fly.
The text files is formatted with each value being separated by a
space, the values ranging between 0 and 4096, and different
matrices being separated be a single line space. I am not sure how
to implement this but am sure that it is possible to do in quartz
composer. One possible way of loading the values could be using
Kineme (http://kineme.net/) file tools plug in. But this returns
the file as a long string of character which I am not sure how to
break up to obtain the values or how to turn these characters back
into integers, matrices and then images. I would appreciate any
advice or help.
-Jacob Balthazor
Sample formatting of my source text file in a 5e5 matrix (real
data is 32x32):
"
1 32 54 38 95
2 44 4 552 23
1 32 54 38 95
2 44 4 552 23
1 32 54 38 95
1 32 11138 94
2 23 4 552 23
1 32 54 76 95
2 44 4 334 23
1 32 11 38 95
"
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