Bitmap/Read a PPM file: Difference between revisions
→The ATS program file
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===The ATS program file===
This file should be called <code>bitmap_read_ppm_task_program.dats</code> (though it actually could be called by another name).
[[File:Bitmap read ppm task ATS color.jpg|thumb|alt=A gnarly tree on a rise by the sea, in color.]][[File:Bitmap read ppm task ATS gray.jpg|thumb|alt=A gnarly tree on a rise by the sea, in grayscale.]]
<syntaxhighlight lang="ats">
(* The program should be able to read a PPM in raw or plain format,
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end
</syntaxhighlight>
You can compile the program with the shell command
<pre>myatscc bitmap_read_ppm_task_program.dats</pre>
If compilation is successful, the program will be called <code>bitmap_read_ppm_task_program</code>. You can give up to two arguments (any others will be ignored). The first argument is a file name for the input file, the second is the file name for the output file. Either argument can be "-", meaning to use the respective standard input or output. An argument omitted is equivalent to "-".
Shown in the margin are before and after for SIPI test image 4.1.06 (not counting that I have converted the PPM files to JPEGs).
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