On 6/20/2020 4:48 PM, Otared Kavian wrote:

Hi all,

I have a family of graphs to draw in Metapost and I would like to attribute a different color to each of them according to the value of a certain variable. Assuming that the path mygraph(j) depends on the variable j, which is computed within a lua code and passed to Metapost, I wonder if it is possible to define an array of colors named mycolor, so that I could say

draw mygraph(j) withcolor mycolor(j) ;

Here the variable j takes integer values (say between 1 and 10), and one would have defined mycolor(1) through mycolor(10). \startMPpage string MyColors[] ; path MyPaths [] ;

MyPaths[1] := fullcircle scaled 3cm; MyColors[1] := "red"; MyPaths[8] := fullsquare scaled 3cm; MyColors[8] := "green"; draw MyPaths[1] withcolor MyColors[1] ; draw MyPaths[8] withcolor MyColors[8] ; \stopMPpage ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------