Hi Stephen, It's a little different to think about with more colors, but either set mode linecolors:7 Or plot/i=1:100/color=14 cos(i/50)Because there are now 7 distinct colors including the one you defined, the colors, cycle 1, ..., 7 thin; then 8, ...,14 thick; 15, ...,21 very thick. On 3/1/2011 12:19 PM, Stephen Guimond wrote: Hello, I want to plot data with a thick gray line. I did: set mode linecolors:7 ppl color 7,70,70,70 plot/i=1:100/line=7/set cos(i/50) ppl pen 7 13 ppl plot I get a thin gray line no matter what I do after /set According to the color_thickness formula, if I define a new color 7, the color_thickness for a thickness of 3 should be 19, but that doesn't work either. Eventually, I want to overlay this thick gray line, which I note needs some different syntax. What am I doing wrong? Thanks, Steve ======================================================= Stephen R. Guimond Graduate Research Assistant Florida State University Center for Ocean-Atmospheric Prediction Studies (COAPS) ======================================================= |