From: Mojca M. <moj...@gm...> - 2009-04-05 04:06:09
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Hello, Today I was trying to generate PNG "heatmaps" (similar to this one: http://gnuplot.sourceforge.net/demo/pm3d.8.png) with one-to-one pixel ratio, but I cannot get rid of the extra white row below data and one extra white column on the right: # remove everything but the plot set tmargin 0 set bmargin 0 set lmargin 0 set rmargin 0 unset colorbox unset border unset xtics unset ytics unset key set size ratio -1 n=4 # I have (x,y,z) tripples with x and y from (0,1,2,3,4) # so that's a 5x5 matrix set xrange [-0.5:n+0.5] set yrange [-0.5:n+0.5] # this doesn't work as desired, but leaves an extra blank row and column set term png size n+1,n+1 plot "my-5-times-5.dat" matrix with image At the end I solved the problem by using set term png size n+2,n+2 crop so that the crop command removed the extra line and column, but it seems more like a tiny bug to me (most probably resulting from fundamentally slightly different behaviour between pixel and vector formats/different perception of whether one draws in the center of pixels or on the border). Any comments or ideas about this? Thanks, Mojca |