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openu,1,unit
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)
if ( color eq 0 ) then begin
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
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
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
loadct,color
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 = white
ccol_2 = black
ccol_3 = black
endelse
set_plot,"x"
window,1,xpos=450,ypos=28,xsize=dim+350,ysize=dim+200,title="PIC - spacetime"
xoff=150
yoff=100
dist=150
tv,dens,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+d(1),yoff+d(2)], $
/device
plot, x, y, xstyle = 1, xrange = [xmin,xmax], xtitle = xname, $
ystyle = 1, yrange = [ymin,ymax], ytitle=yname, $
charsize = 2,$
color = black, /nodata, /noerase, /device,$
position = [xoff,yoff,xoff+d(1),yoff+d(2)]
xoff = xoff+d(1)+dist
tv,sca,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 = [zmin,zmax],$
ytitle = zname, charsize = 2, $
levels = [level1, level2, level3], $
c_color = [ccol_1,ccol_2,ccol_3], color = black, $
position = [xoff,yoff,xoff+s(1),yoff+s(2)], $
/device
close,1
close,2
end
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