@robbo

Doh! <slaps forehead> I see, now. Yes, my instructions above have an error. The pipe file name must match in all steps. So “SARndbox.fifo” in steps 4 and 5 should be “SARndbox.pipe”. Sorry.

Good catch. Will you be posting video anywhere of your sandbox running with alternate liquids and matching colors?

Updated/Fixed steps to change color maps in a running sandbox:

1) If not already done, add a control pipe in the folder you launch SARndbox. In a terminal window, run mknod SARndbox.pipe p to create a pipe you will use to control the running sandbox.

2) If not already done, tell SARndbox to use a control pipe. This is done with the -cp SARndbox.pipe option. I.e. SARndbox -uhm becomes SARndbox -uhm -cp SARndbox.pipe. The pipe names must match in all steps.

3) Create an alternate color map file. Find “HeightColorMap.cpt” and copy it, in the same folder, to “HeightColorMap-lava.cpt”. The four columns in cpt files are (left to right) elevation, red, green, and blue. Edit “HeightColorMap-lava.cpt” to swap the red and blue values for all elevations below sea level. For example, the first line (“-40.0 0 0 80”) becomes “-40.0 80 0 0”.

4) Test your new color map in a terminal window. Run echo "colorMap HeightColorMap-lava.cpt" > SARndbox.pipe to change to the lava color map. Run echo "colorMap HeightColorMap.cpt" > SARndbox.pipe to change to the default color map.

5) Add echo "colorMap <color map file>" > SARndbox.pipe to the “switch” scripts to match the color map to the texture.

6) Ask questions if you run into problems.

So, I tried again, and I’m facing the same troubles, I get a “No such file or directory” my sandbox scripts are saved at the following configuration /home/alfredo/src/scripts

I Just don’t know why I have this error, I paste the exact same things that are on the Google Drive document, help, pls.