Hello people, I'm working with a simple php program. I'm suppossed to
send some variables to gnuplot and wait for it to plot what I want. The
problem is that I must be doing it really bad, since no plot appears at
all. I'll explain better: I'm using the "exec" instruction, but I don't
know how to tell my program that gnuplot must open. I directly write:
exec(""set title \"Evolucion de las SMTU en el tiempo\"");
exec("set format y \"%.3f\"");
exec("set xlabel \"Fecha\"");
exec("set ylabel ".$ejey);
exec("set yrange [:]");
exec("set xdata time");
exec("set ytics 0.25");
exec("set xtics");
exec("set nomx2tics");
exec("set nomy2tics");
exec("set grid");
exec("set size 2");
exec("set lmargin 7");
exec("set rmargin 2");
exec("set tmargin 3");
exec("set bmargin 3");
exec("set boxwidth 10");
exec("set output \"salida_gnuplot.png\"");
exec("set terminal png");
exec("plot '-' with linespoints, '-' with linespoints, '-' with
linespoints);
(and here, I star a bucle to send all the values like this:
3
4
6
0
.... and so on)
Another problem I have is that my xaxis is a date, and I don't
understand very well how this structure of plot '-' works with dates.
No error message appears on my screen, but neither the plot appears.
thank you very much if you could help me!!
|
