CODEWITHSUNDEEP
c++graphgnuplotdata-visualization
hsuk
hsuk

Reputation: 6860

How to generate image file with C++ gnuplot?

I am trying to implement Gnuplot on C++ to create a heat map. Once I run the following code, it opens a new gnu plot window with the plot on it. Can't I just write the graph as image file instead opening it on new window ?

Code:

Gnuplot gp;
gp << "unset key\n";
gp << "set pm3d\n";
// gp << "set hidden3d\n";
gp << "set view map\n";
gp << "set xrange [ 0 : 10 ] \n";
gp << "set yrange [ 0 : 10 ] \n";
gp << "splot '-'\n";
gp.send2d(frame);

enter image description here

Upvotes: 0

Views: 2112

Answers (2)

nbremond
nbremond

Reputation: 1

Add the following lines to your script :

gp << "set terminal png\n";
gp << "set output 'my_file.png'\n";

There are other formats available, you can see this page to get more informations.

Upvotes: 0

LookAheadAtYourTypes
LookAheadAtYourTypes

Reputation: 1699

Just add output. Below code should work for you:

Gnuplot gp;
gp << "unset key\n";
gp << "set pm3d\n";
// gp << "set hidden3d\n";
gp << "set view map\n";
gp << "set xrange [ 0 : 10 ] \n";
gp << "set yrange [ 0 : 10 ] \n";
gp << "set terminal png \n";
gp << "set output 'b.png' \n";
gp << "splot '-'\n";
gp.send2d(frame);

Upvotes: 1

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