Transform an array into a raster

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YEMY on 8 Mar 2021
Commented: YEMY on 8 Mar 2021
I have a 182x121 array (csv file) that I want to transform into a jpg raster with a cell size of 30x30.
The file doesn't have any reference system so I have no Lat,Lon coordinates.
My array' cells are presenting percentages, if there is a way to put such a threshold to make only above 0.7 cells to appear in the raster, otherwise it is not a problem.
Best regards,
YEMY on 8 Mar 2021
No, my question is how to convert a matrix or an array into an image.

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