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同波段不同波长范围的能谱指数转化（IDL程序）
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Function alpaha_trans,vx1=vx1,vy1=vy1,vx2=vx3,vy2=vy2, $
slopex=slopex,slopey=slopey, $
alpaha_xy
;+
;NAME:
; alpaha_trans
;PURPOSE;
; alpaha transform between different waveband
;CALLING SEQUENCE:
; result=alpaha_trans(alpaha_xy,vx1=vx1,vy2=vy2,vx2=vx3, $
; vy2=vy2,slopex=slopex,slopey=slopey)
;
;INPUT:
; vx1,vy1 ---- frequencies input
; vx2,vy2 ---- frequencies output
; alpaha_xy
;
; alpaha_xy=-lg(Ly/Lx)/lg(vy/vx)
; Lx -- vx^slopex
; Ly -- vy^slopey
;
;OUTPUT:
; alpaha_xy_tr
;REVISION HISTORY:
; Original by DL.Wang,11-May-2007
;-
A=alog10(vy1/vx1)/alog10(vy2/vx2)
B=alog10(vy2/vy1)/alog10(vy2/vx2)
C=alog10(vx2/vx1)/alog10(vy2/vx2)
alpaha_xy_tr = A * alpaha_xy - slopey * B + slopex * C
return,alpaha_xy_tr
End
https://blog.sciencenet.cn/blog-456360-658879.html
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