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the question about 'index' of 'set linetype' or 'set style line'

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Hello,

    Recently, I am plotting multi contour maps. I want set the contour line color represent same value in different contour maps. Such as:

set cntrparam levels discrete 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80
set linetype 14 #lc rgb 'blue'
set linetype 15 #lc rgb 'black'
set linetype 16 #lc rgb 'orange'
set linetype 17 #lc rgb 'yellow'
splot "tc2d-300fs_blanks.dat" with lines

   But I found that index of  'set linetype' or 'set style line' is start from center to edge. How can I set the index start from the edge to center of contour lines.

   Because the discrete of my contour maps are different, for example, the other map's discrete is: 

set cntrparam levels discrete   5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60


Thank you very much.

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the question about  'index' of 'set linetype' or 'set style line' phileaslean@gmail.com - 2017-08-06 02:26 -0700

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