Re: parenthesis with compose Plus and Minus
Posted: 2010-10-03T18:24:31-07:00
Continuing this...
Here is a true 'heat map' for two point sources. which I believe is what you are trying to simulate. Essentually the final steady state condition after an infinite time, where yours would be the condition at a fixed point in time without fixed source interference or normalization.
It is actually just a two point "Shepards" sparse color gradient fill..

It also shows a vertical flat line between the points, but all other lines are curved. To see that lets do a color replacement to mark iso lines using a color lookup tables -clut

Here is a true 'heat map' for two point sources. which I believe is what you are trying to simulate. Essentually the final steady state condition after an infinite time, where yours would be the condition at a fixed point in time without fixed source interference or normalization.
It is actually just a two point "Shepards" sparse color gradient fill..
Code: Select all
convert -size 69x42 xc: \
-sparse-color Shepards '21,21 white 47,21 black' \
-scale 500% two_point_heatmap.png

It also shows a vertical flat line between the points, but all other lines are curved. To see that lets do a color replacement to mark iso lines using a color lookup tables -clut
Code: Select all
convert two_point_heatmap.png -size 1x11 gradient:Blue-Red \
-interpolate NearestNeighbor -clut two_point_clut.png
