Re: [Gretl-users] How to run a gnuplot script from within a gretl script

On Thu, 9 Aug 2012, Paulo Grahl wrote: > I am trying to run a gnuplot script from within a gretl script. Where can I > find some help / tutorials? > Basically, I am trying to do the following: > 1. run a gretl script that opens a data file (which is updated every month). > 2. do some calculations and stats withing gretl script > 3. create a gnuplot with a "professional look" > 3.a - ideally I would have a standard gnuplot script (with some > fancy formatting, with recession bars, etc) and then I would pass the > variables to be plotted (and some strings that would be the names of those > variables, title of the chart, etc) as parameters for the gnuplot script. > > The idea is to have a gnuplot script that would work as a "template" and > then I would use this template to generate some charts with different time > series. You should write a gretl function to do the job. Do you really need to write your own plot command from scratch, or can you use gretl's "gnuplot" command plus {...} commands? The latter would be considerably easier. But here's a trivial example of the former. <hansl> function void write_plot_file (string fname, list ylist, series x, string title) outfile @fname --write printf "set style line 1 lc rgb \"#ff0000\"\n" printf "set style line 2 lc rgb \"#0000ff\"\n" # and so on, if need be printf "set title \"%s\"\n", title print "plot \" nv = nelem(ylist) loop foreach i ylist -q printf "'-' using 1:2 title \"%s\" w lines", varname(ylist[i]) if i < nv printf " , \\\n" else printf "\n" endif endloop loop foreach i ylist -q loop t=1..$nobs -q printf "%.10g %.10g\n", x[t], ylist.$i[t] endloop printf "e\n" endloop outfile --close end function # driver script open data9-7 string fname = "myplot.gp" string title = "My title" list ylist = PRIME UNEMP series x = 1975 x = x(-1) + 0.25 write_plot_file(fname, ylist, x, title) gnuplot --input="@fname" --output=display </hansl> Allin Cottrell _______________________________________________ Gretl-users mailing list Gretl-users(a)lists.wfu.edu http://lists.wfu.edu/mailman/listinfo/gretl-users