I wrote: >You mean something like : > > ggg ggggg g > ooooooo oooooooo ooo > rrrrrrrrrrrrr rrrrrrrrrrrrrrrrrrrr > >where r=red, o=orange, g=green > >How about something like this : > >if y>20 then a=20, else a=y >if y>40 then b1=40, else b1=y >... >if y>80 then d1=80, else d1=y >if y>80 then e=y-d1 else e=0 >d=d1-c1 >c=c1-b1 >b=b1-a >area ... a ... >area ... b ... stacked >... >area ... e ... stacked
Actually, this : >d=d1-c1 >c=c1-b1 >b=b1-a should probably be more like : if y>d1 then e=y-d1 else e=unknown if d1>c1 then d=d1-c1 else d=unknown if c1>b1 then c=c1-b1 else d=unknown if b1>a then b=b1-a else b=unknown otherwise, b,c, d, and e will be drawn as a thin line on top of whatever the graph comes to, giving the result of (I think) a single pixel in colour of e contaminating the graph when y is less than 80. Also, "if y>40 then b1=40, else b1=y" could be written as min(y,40) or in RPN "40, y, min" I think. Obviously, working out the correct RPN for this is left as an exercise for the reader ! _______________________________________________ rrd-users mailing list rrd-users@lists.oetiker.ch https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users