GLE Example: maungazoom.gle

[PDF file]

 

---

size 16 8

include "color.gle"

! draw left graph
amove 0 0
begin graph
   size 8 8
   title "Auckland's Maunga Whau Volcano"
   colormap "volcano.z" 100 100 palette palette_blue_white_red
end graph

! define zoom rectangle on left graph
zx0 = 1; zy0 = 4
zx1 = 8; zy1 = 12

! draw zoom rectangle in yellow
gsave
set color yellow lwidth 0.1
amove xg(zx0) yg(zy0)
box xg(zx1)-xg(zx0) yg(zy1)-yg(zy0)
grestore

! draw right graph
amove 7 0
begin graph
   size 8 8
   title "Zoom on ("+num$(zx0)+","+num$(zy0)+") x ("+num$(zx1)+","+num$(zy1)+")"
   xaxis min zx0 max zx1
   yaxis min zy0 max zy1
   colormap "volcano.z" 100 100 palette palette_blue_white_red
end graph

! draw vertical color range
amove 14.5 yg(ygmin)
color_range_vertical zmin 0 zmax 180 zstep 20 palette palette_blue_white_red

---

 

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