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pro idlplot2ps

 dim= 400

 xmin = -1.0
 xmax = 1.0
 ymin = 0
 ymax = 20
 zmax = 0.02

 level1 = 3
 level2 = 4
 level3 = 5

 color = 1

 openu,1,"dens.idl"
 a=assoc(1,bytarr(dim,dim,/nozero))
 dens=a(0)
 openu,2,"scale.idl"
 b=assoc(2,bytarr(30,256,/nozero))
 sca=b(0)
 d=size(dens) 
 s=size(sca) 

 for i=0, dim-1 do begin
	for j=0, dim-1 do begin
		if (dens(i,j) eq 0) then dens(i,j)=1
	endfor
 endfor

 if ( color eq 0 ) then begin
	 max  = 255
	 expo =	2
	 r = findgen(max+1)
	 g = findgen(max+1)
	 for i=0, max do begin
	     g(i) = max * ( 1 - r(i)/max ) ^ expo 
	 endfor
	 tvlct, g, g, g
	 black = 255
	 white = 0
	 ccol_1  = black
	 ccol_2  = black
	 ccol_3  = black
 endif else begin
	 loadct,4
	 max  = 255
	 r = findgen(max+1)
	 g = findgen(max+1)
	 b = findgen(max+1)

	 tvlct, r, g, b, /get
 	 r(0) = 255
	 g(0) = 255
	 b(0) = 255
	 tvlct, r, g, b

	 black = 1
	 white = 0
	 ccol_1 = black
	 ccol_2 = black
	 ccol_3 = black
 endelse

 set_plot,"ps"
 device, file="res.ps", /color, bits=8
 xoff=!d.x_px_cm*2 
 yoff=0
 s1x  = !d.x_px_cm*10
 s1y  = !d.y_px_cm*10
 s2x  = !d.x_px_cm    
 s2y  = !d.y_px_cm*10
 dist = !d.x_px_cm*4

 tv, dens, xsize=s1x, ysize=s1y, xoff, yoff
 x = xmin + (xmax-xmin)/d(1)*findgen(d(1))
 y = ymin + (ymax-ymin)/d(2)*findgen(d(2))
 zcrit = 256/zmax
 contour, dens, /noerase, xstyle=4, ystyle=4, $
	  level = [level1*zcrit, level2*zcrit, level3*zcrit], $
          c_color = [ccol_1, ccol_2, ccol_3], $
          position=[xoff,yoff,xoff+s1x,yoff+s1y],/device
  plot, x, y, xstyle=1, ystyle=1, xrange=[xmin,xmax], yrange=[ymin,ymax],$
        xtitle="!3x/!7k!3!D0!3", ytitle="!3t/!7s!3",$
        charsize=2, color=black, /nodata, /noerase, /device,$
        position=[xoff,yoff,xoff+s1x,yoff+s1y]

 xoff = xoff + s1x + dist
 tv, sca, xsize=s2x, ysize=s2y, xoff, yoff
 x = 1.0/s(1)*findgen(s(1))
 y = zmax/s(2)*findgen(s(2))
 contour, sca, /noerase, xstyle=4, ystyle=1, yrange=[0,zmax],$
          charsize = 2, $ 
    	  levels = [level1, level2, level3], $
          c_color = [ccol_1, ccol_2, ccol_3], $
	  color = black, $
          position = [xoff,yoff,xoff+s2x,yoff+s2y],/device
 plot, x, y, xstyle = 4, ystyle = 1, yrange = [0,zmax],$
          ytitle = "!3E!N/E!Dr!3", charsize = 2,$
          color = black, /nodata, /noerase, /device,$
          position = [xoff,yoff,xoff+s2x,yoff+s2y]

 device, /close
 close,1
 close,2

end