Monday, September 8, 2008

Broken rotation

I have to echo James in saying how remarkable it is than anything I ever did worked at all! I'm growing more and more certain that I've been double-correcting rotation for the past 2 months, and my maps don't look all that bad!



Image caption:
Top left - both PA and rotang
Top right - neither
Bottom left - rotang only
Bottom right - PA only

I'm running the same sort of comparison on all of the GC and L=24 data. Check out /scratch/adam_work/ROT_TEST for the results. I'll be updating this when I've completed that analysis.

Update 6:35 PM: !@#$, etc. New problem child:


Image caption (same as above, luckily):
Top left - both PA and rotang
Top right - neither
Bottom left - rotang only
Bottom right - PA only

So, can anyone tell me which one of THESE is right? Because I can't. Top left is 'correct' except that it's not.

Update 7:10 PM: I compared adding/subtracting PA and RA, and I can say this: subtracting PA never works. Adding/subtracting RA works variably.

I think I'm done testing parameter space. I haven't had very good luck doing parameter space tests in the past; it usually is more beneficial to take a step back and try to think through the problem.

Update 7:30 PM: Fixed. Much as this looks like a short-lived, easily solved problem, it was one of the most subtle and insidious errors I've made. I got extremely lucky that plotting PA and ROTANGLE happened to spark off warning sirens in my mind about the positioning of the variable names. I wouldn't normally look for that.

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