How do I use gnuplot from C++?

Question

I want to plot some graphs with (x,y) points which is generated from a C++ programme. I can successfully plot these data from gnuplot command from a terminal.

But I want to plot the same thing from a C++ programme, is this thing possible in ubuntu 16.04 lts ?

Maybe you can have a look at the GnuPlotScripting C++17 lib. — Picaud Vincent
– Picaud Vincent, Commented Mar 8, 2020 at 18:27
@PicaudVincent, I had a look at the library and it may fit what I am trying to do. I wonder if it can do candlestick charts, as well as embedding the plot into a window created by wxWidgets? — CaTx
– CaTx, Commented Dec 24, 2022 at 15:49
Also you may wanna contact gnuplot to add that library to their list of interfaces here. — CaTx
– CaTx, Commented Dec 24, 2022 at 16:20
@CaTx thanks to free_form you have access to all gnuplot commands, by example script.free_form("plot {} using 1:3:2:6:5 with candlesticks", data); should work. Concerning wxWidgets nothing is present in my package to do that, sorry — Picaud Vincent
– Picaud Vincent, Commented Dec 25, 2022 at 8:02
@CaTx Thanks for the suggestion. I had made the request in the past, but there was no update. — Picaud Vincent
– Picaud Vincent, Commented Dec 25, 2022 at 8:03

R. Mitchell · Accepted Answer · 2020-07-15 01:24:53Z

16

Sure, just install gnuplot using standard package command:

sudo apt-get update
sudo apt-get install gnuplot

After that you just need to integrate gnuplot iostream header which is an interface for gnuplot from C++:

#include "gnuplot-iostream.h"

This header is not included when you install gnuplot but can be found here. Here you have an example link of iostream for reference: iostream example code C++

edited Jul 15, 2020 at 1:24

R. Mitchell

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answered Aug 15, 2017 at 18:39

hackela

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Dundo · Accepted Answer · 2021-05-06 17:46:46Z

8

I am adding an answer since I cannot comment. As hackela said you can install gnuplot, then you can install gnuplot-iostream from aptitude instead of dowloading manually the header file, with this command:

sudo apt-get install libgnuplot-iostream-dev

answered May 6, 2021 at 17:46

Dundo

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Ying Dai · Accepted Answer · 2021-09-06 02:33:20Z

5

Another option: C++ lib matplotplusplus is actually sending drawing commands to GnuPlot. It provides an API similar to python matplotlib. It is available in C++ package manager vcpkg.

answered Sep 6, 2021 at 2:33

Ying Dai

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