Making C code plot a graph automatically

Question

I have written a program which writes a list of data to a \'.dat\' file with the intention of then plotting it separately using gnuplot. Is there a way of making my code pl

Answer 1

I've adapted the accepted answer to plot a float array while avoiding the use of a temporary file. In it, float* data_ is the array and size_t size_ its size. Hopefully it is helpful for someone!

Cheers,
Andres

void plot(const char* name="FloatSignal"){
  // open persistent gnuplot window
  FILE* gnuplot_pipe = popen ("gnuplot -persistent", "w");
  // basic settings
  fprintf(gnuplot_pipe, "set title '%s'\n", name);
  // fill it with data
  fprintf(gnuplot_pipe, "plot '-'\n");
  for(size_t i=0; i