;+ ;FUNCTION: peak_2d(dat,ENERGY=en,ERANGE=er,EBINS=ebins,ANGLE=an,ARANGE=ar,BINS=bins) ;INPUT: ; dat: structure, 2d data structure filled by get_eesa_surv, get_eesa_burst, etc. ;KEYWORDS ; ENERGY: fltarr(2), optional, min,max energy range for integration ; ERANGE: fltarr(2), optional, min,max energy bin numbers for integration ; EBINS: bytarr(na), optional, energy bins array for integration ; 0,1=exclude,include, ; na = dat.nenergy ; ANGLE: fltarr(2), optional, min,max pitch angle range for integration ; ARANGE: fltarr(2), optional, min,max angle bin numbers for integration ; BINS: bytarr(nb), optional, angle bins array for integration ; 0,1=exclude,include, ; nb = dat.ntheta ; BINS: bytarr(na,nb), optional, energy/angle bins array for integration ; 0,1=exclude,include ;PURPOSE: ; Returns the energy of the energy flux peak, eV ;NOTES: ; Function normally called by "get_2dt.pro" to generate ; time series data for "tplot.pro". ; ;CREATED BY: ; J.McFadden ;LAST MODIFICATION: ; 97-6-4 J.McFadden ;- function peak_2d,dat2,ENERGY=en,ERANGE=er,EBINS=ebins,ANGLE=an,ARANGE=ar,BINS=bins peak = 0. if dat2.valid eq 0 then begin print,'Invalid Data' return, peak endif dat = conv_units(dat2,"eflux") ; Use Energy Flux na = dat.nenergy nb = dat.nbins ebins2=replicate(1b,na) if keyword_set(en) then begin ebins2(*)=0 er2=[energy_to_ebin(dat,en)] if er2(0) gt er2(1) then er2=reverse(er2) ebins2(er2(0):er2(1))=1 endif if keyword_set(er) then begin ebins2(*)=0 er2=er if er2(0) gt er2(1) then er2=reverse(er2) ebins2(er2(0):er2(1))=1 endif if keyword_set(ebins) then ebins2=ebins bins2=replicate(1b,nb) if keyword_set(an) then begin if ndimen(an) ne 1 or dimen1(an) ne 2 then begin print,'Error - angle keyword must be fltarr(2)' endif else begin bins2=angle_to_bins(dat,an) endelse endif if keyword_set(ar) then begin bins2(*)=0 if ar(0) gt ar(1) then begin bins2(ar(0):nb-1)=1 bins2(0:ar(1))=1 endif else begin bins2(ar(0):ar(1))=1 endelse endif if keyword_set(bins) then bins2=bins if ndimen(bins2) ne 2 then bins2=ebins2#bins2 data = dat.data*bins2 if ndimen(data) eq 2 then spec = total(data,2) else spec=data maxspec = max(spec,index) if ndimen(dat.energy) eq 2 then peak = dat.energy(index,0) else peak = dat.energy(index) return, peak end