0915	Arrive. Running 'late' from staying up too late last night singing
		songs by candlelight/thunderstorm, and eating bread.
	First: comparing IRIS and SFD ... in compareIS/ folder
0950	Looking comparable, but want to crop the edges of SFD so that it's
		an exact 1:1 match, pixel by pixel, with IRIS...
	making crop.g... scans over every pixel, finds ones outside a set
		limit, and sets them to 0. Takes a while to run, though...
		LOTS of errors as it hits the corners, too... but they are
			ok and it's still working
1100	made IS.fits, which is ratio of IRIS / SFD
	making re-grids of IRIS tile to match SFD ngp, and vice versa...
	::for my reference::
	I200B4H0.FIT - original IRIS tile #200
	I200B4H0_nodeg.fits - IRIS tile #200 w/o degenerate axis
	IRIS_regrid_GASS_w.fits - complete IRIS data regridded to GASS
	Igal.fits - single tile, in Galactic coordinates
	SFD_i100_4096_sgp.fits - original sgp of SFD data
	SFD_i100_all_regrid_mask.fits - SFD map (problematic) regridded to GASS
	
	IS.fits - ratio of IRIS/SFD, in GASS regridding
	
	Igal.fits - IRIS tile #200 regridded in galactic...
	SFDregridIRIS.fits - orig. SFD regridded to match IRIS tile #200
	ISregridIRIS.fits - IRIS/SFD, regridded to match IRIS tile #200
	
1202	lunch!
1230	back from lunch
	continuing on IRIS/SFD comparison....
	trouble is that the regridded SFD to match IRIS doesn't *quite*
		line up right...
	but if you use both galactic, they should be fine!! and are.
	[this is tricky/finicky/tedious to get worked out....]
	SFD_i100_4096_sgp.fits - original SFD sgp image
	IRISregridSFD - regridding... not working...
	ISregridSFD - IRIS/SFD, regridded to match SFD sgp
1355	DJ stopped down, looked at ISregridIRIS.fits, said to:
	-pick a few tiles, "representative sample" from IRIS, compare to SFD
	-also run point by point correlation (corr.g?) on the comparisons
	for comparisons, picking tiles:
	200 - 01:45 +00.00 (J2000)  -  SGP-ish
	10  - 01:11 -69.05 (J2000)  -  SMC-ish
	33  - 12:13 -59.25 (J2000)  -  on galactic plane
	88  - 18:44 -39:43 (J2000)  -  above plane, fun cloud
1405	Procedure for making comparisons:
	  <>get into non-degenerate	
		- im := imagefromimage(infile='I010B4H0.FIT',dropdeg=T,outfile='I010B4H0_nodeg.img')
		- im.tofits('I010B4H0_nodeg.fits')
	  <>get into galactic gridding (for regrd.g)
		- im := image('I010B4H0_nodeg.fits')
		- cs := im.coordsys()
		- cs.setreferencecode(value='GALACTIC',type='dir',adjust=T)
		- im2 := im.regrid(outfile='I010B4H0_nodeg_gal.img',csys=cs)
		- im2.tofits('I010B4H0_nodeg_gal.fits')
	  <>regrid SFD to match this IRIS tile
		- include 'regrd.g'
		- regrd('SFD_i100_4096_sgp.fits','I010B4H0_nodeg_gal.img','SFDregridI010')
	  <>convert to arrays, divide, convert back to images
		- S := image('SFDregridI010.fits')
		- I := image('I010B4H0_nodeg_gal.fits')
		- cs := I.coordsys()
		- Sa := S.getchunk()
		- Ia := I.getchunk()
		- ISa := Ia/Sa
		- IS := imagefromarray(pixels=ISa,csys=cs,outfile='ISregridI010.img')
		- IS.tofits('ISregridI010.fits')
	  <>plot pixel-by-pixel correlation:
		- include 'corr.g'
		- corr('I010B4H0_nodeg_gal.img','SFDregridI010.img','test.ps')
		
1450	talk!
1355	back from talk.
1602	DJ down, to look at graphs/regions/etc...
	DO: put slope=1 line on the correlation graphs...
1657	Graphs of correlations are saved as .ps and .ps.gif files in the
		/compareIS/ folder.
1738	Been catching up on emails, cleaning up stuff from the day, getting
		reading for interesting comparisons/etc tomorrow...
	Going to piano for a while, then over to Glen's for dinner at 6:30...
1811	leaving?