Re: [Gnuplot-info] Plotting fortran formatted data

[ivana r. <iva...@mf...>]

Hi  Sergei,

although to use external simple filter was intended in such cases,
under unix-like OS e.g. "cut":


gnuplot> plot '<cut -b 11-14,16- --output-delimiter=" " datafile'


you can do this directly by gnuplot as well:


# begin gnuplot code

# replace datafile with real filename
file="datafile"

# set the data separator to a char missed in the file
set datafile separator ";"

# use string functions to extract columns of a given width to a named datablock
set table $mydata
plot file u (stringcolumn(1)[11:14]):(stringcolumn(1)[16:]) w table
unset table

# reset the data separator
set datafile separator

# uncomment to print the preprocessed datablock if you wish
# print $mydata

# plot the preprocessed datablock

plot $mydata w lp t "extracted data"

# end of gnuplot code


sincerely

Iva