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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