list of pixel values

[Hans Pleijsier]

Dear PI-friends,

I am working on a perlscript that (1) takes in an array of values from 0 to 1, (2) identifies the maximum value and (3) evaluates the PSF
by returning some sort of number that provides the user with a general appreciation of the starimage.

Be aware: I did not refer to the FWHM-word in any way here ...   

However ... now I am looking for a small script that produces a list or array of pixelvalues from 0 to 1.
The user selects a box of let us say 16x16, 32x32 or 64x64 pixels in a monochrome image in PI and then the script returns
the 256, 1024 or 4096 pixelvalues to the clipboard or a file.

I would not be surprised if this utility already exists in PI but I am unable to find it.
If it is not available in PI, I would appreciate a suggestion on how to build it or on which existing script to use as a starting point.

Many thanks in advance,

HP

[Carlos Milovic]

See the Matrix definition, there may be something useful for you.

[Hans Pleijsier]

Carlos,
Thank you.
I understand that you are directing me towards some sort of a c++module in the programmers version of PI.
I was hoping to avoid these modules because I am not a programmer ... that is why I use perl ...

[Carlos Milovic]

The Matrix class is implemented quite straightforward into the JS engine. Take look there, in the script editor.

[Hans Pleijsier]

I will take a look, thank you.