I am struggling mrmath and the struggle is so basic I am worried I am doing something very stupid. But I simply can not see what.
So I try to use mrmath and the usage is simple enough, but I can’t seem to be able to do the simple most things with it, but always get the error
mrmath: [ERROR] unexpected value supplied for argument “operation” (valid choices are: mean, median, sum, product, rms, norm, var, std, min, max, absmax, magmax)
I use the command:
I think this might be related to the use of a long dash (–) instead of a regular dash (-) in the –axis option. This means the command doesn’t recognise –axis as an option, but treats it as a regular argument. When that happens, the command sees what it thinks are 5 regular arguments, and therefore assumes arguments 1, 2 & 3 are input images, argument 4 (–axis) is the operation to be performed, and the last argument (the number 5) is the output image…
Try using a regular dash rather than a long one. I think these issues tend to happen when commands are copy-pasted from documents that were written using MS Word, since it tends to ‘autocorrect’ dashes into long dashes quite routinely, it’s actually quite difficult to get it to stop…