[Gnuplot-info] Changing the default plot color in multi column plot

[Debostuti G. <deb...@gm...>]

Hi

I have a data set (input.dat) which looks as below:

#C1     C2    C3 ...   C250
1          -2.1    -1.9...  -1.1
2
.
.
.
10       -0.9    1.3        1.7

My intention was that points 1 to 10 will be joined in each column to form
each plot, and therefore I'll have a 249-line plot. This I am able to
achieve by the following:

N = system("awk 'NR==1{print NF}' input.dat")
plot for [i=2:N] "input.dat" u 1:i with lines title "" linewidth 2

However, each line in the plot has a different color. I want the plots to
be colored by a defined palette where the range is the column number
itself. E.g., C2 will be the lightest blue and C250 the darkest blue. I
require this because the columns are arranged based on a factor.


Thanks in advance for any help in this regard.

-- 
Debostuti Ghosh Dastidar
DST SERB National Post-Doctoral Fellow
Molecular Biophysics Unit
Indian Institute of Science, Bangalore