Yo, I'm plotting several sets of data that can have wildly different values between sets, and need a way to automatically determine the minor y-tick values, given the major tick values obtained via (in this case) YTICK_GET=yvals. I do not explicitly set the YMINOR=yminor keyword when plotting (in this case), so IDL determines the ticks for me (because of the data variability I cannot just use a static range).

Is there a way to automatically determine the values of the minor y-ticks if I don't explicitly set the YMINOR keyword? My gut tells me "nope"...unless I could somehow copy/modify the algorithm that IDL uses internally to determine the proper number of major/minor ticks in the first place...

Thank you guys for any pointers!