Heat Maps

Sets Slope /S1*S10/, FallowLength /L1*L8/, DataItem /Slope,Length,Erosion/ ;

Parameter Erosion_Data;

Erosion_Data(Slope,FallowLength,"Slope") = ord(slope)/20;

Erosion_Data(Slope,FallowLength,"Length") = ord(FallowLength);

Erosion_Data(Slope,FallowLength,"Erosion") = Max(0,uniform(20*ord(slope),40*ord(slope))-uniform(0.1,0.3)*ord(FallowLength));

Display Erosion_Data;

* Figure 1 - Defaults

$setglobal gp_title "Heatmap 1 - default display"

$setglobal gp_style heatmap

$libinclude gnuplotxyz Erosion_Data

* Figure 2 - Adjust margins to have color legend label appear

$setglobal gp_title "Heatmap 2 - Adjust margins and axis ranges"

$setglobal gp_lmargin at screen 0.1

$setglobal gp_rmargin at screen 0.85

$setglobal gp_xrange 0.05:0.5

$setglobal gp_yrange 1:8

$setglobal gp_cbrange 0:400

$libinclude gnuplotxyz Erosion_Data

* Figure 3 - Change X Y Z Axis Arrangement

$setglobal gp_title "Heatmap 3 - X=Slope Y=Erosion Z=Length"

$setglobal gp_heatmap_x Slope

$setglobal gp_heatmap_y Erosion

$setglobal gp_heatmap_z Length

$setglobal gp_xrange no

$setglobal gp_yrange no

$setglobal gp_cbrange no

$libinclude gnuplotxyz Erosion_Data

$dropglobal gp_ylabel

* Figure 4 - Interpolate values

$setglobal gp_heatmap_x Slope

$setglobal gp_heatmap_y Length

$setglobal gp_heatmap_z Erosion

$setglobal gp_xrange 0.05:0.5

$setglobal gp_yrange 1:8

$setglobal gp_cbrange 0:400

$setglobal gp_title "Heatmap 4 - Interpolate values"

$setglobal gp_pm3d map interpolate 0,0

$libinclude gnuplotxyz Erosion_Data

* Figure 5 - Adjust color palette

$setglobal gp_title "Heatmap 5 - Adjust color palette"

$setglobal gp_palette rgbformulae 34,35,36

$libinclude gnuplotxyz Erosion_Data

* Figure 6 - Reverse color palette

$setglobal gp_title "Heatmap 6 - Use reverse color palette"

$setglobal gp_palette negative rgbformulae 34,35,36

$libinclude gnuplotxyz Erosion_Data

$exit

* More color palettes

$setglobal gp_title "traditional pm3d\n(black-blue-red-yellow)"

$setglobal gp_palette rgb 7,5,15

$libinclude gnuplotxyz Erosion_Data

$setglobal gp_title "green-red-violet"

$setglobal gp_palette rgb 3,11,6

$libinclude gnuplotxyz Erosion_Data

$setglobal gp_title "ocean (green-blue-white)\ntry also other permutations"

$setglobal gp_palette rgb 23,28,3

$libinclude gnuplotxyz Erosion_Data

$setglobal gp_title "hot (black-red-yellow-white)"

$setglobal gp_palette rgb 21,22,23

$libinclude gnuplotxyz Erosion_Data

$setglobal gp_title "color printable on gray\n(black-blue-violet-yellow-white)"

$setglobal gp_palette rgb 30,31,32

$libinclude gnuplotxyz Erosion_Data

$setglobal gp_title "rainbow (blue-green-yellow-red)"

$setglobal gp_palette rgb 33,13,10

$libinclude gnuplotxyz Erosion_Data

$setglobal gp_title "AFM hot (black-red-yellow-white)"

$setglobal gp_palette rgb 34,35,36

$libinclude gnuplotxyz Erosion_Data

$setglobal gp_title "HSV model\n(red-yellow-green-cyan-blue-magenta-red)"

$setglobal gp_palette model HSV rgb 3,2,2

$libinclude gnuplotxyz Erosion_Data

$setglobal gp_title "gray palette"

$setglobal gp_palette gray

$libinclude gnuplotxyz Erosion_Data