d.linegraph writes a pgm file instead of ppm

[lucadelu]

d.linegraph writes a pgm file instead of ppm and d.mon returns an error

ERROR: Rendering failed. Details: File </home/lucadelu/grassdata/nc_spm_08/user1/.tmp/center/9052.0.ppm>

inside the folder I can find the pgm file which is just in the wrong format

ls /home/lucadelu/grassdata/nc_spm_08/user1/.tmp/center/
9052.0.cmd  9052.0.env  9052.0.pgm

[hamish]

does it still do it if you use e.g. the y_color= option? (PGM is just the greyscale version of PPM)

Hamish

[glynn]

Replying to lucadelu:

d.linegraph writes a pgm file instead of ppm and d.mon returns an error

If the PNG driver is asked to generate a PPM file and the data has an alpha channel, it will generate both a .ppm file and a .pgm file. The .ppm file is written first, and a fatal error will be raised if the file cannot be opened (so the .pgm won't be created).

If you have a .pgm file without a matching .ppm file, the most likely reason is that something has deleted the .ppm file.

[wenzeslaus]

Do you have some commands to reproduce it? (The docs doesn't have any example.)

[neteler]

d.linegraph is used here:

# scripts/i.spectral/i.spectral.py l177
grass.run_command('d.linegraph', x_file=xfile, y_file=yfiles,...

[martinl]

Still an issue?

[martinl]

No activity.