Easy Plplot

easy_plplot is a wrapper for PlPlot inspired by the interface of matplotlib. It is intended to fill the need for rapid feedback while developing numerical simulations, and does not replace more sophisticated packages such as matplotlib or even direct use of PlPlot.

While it is possible that the output from easy_plplot may be considered as publication quality, no assertion is made along those lines. This software has been written in the hope that it will be useful, especially for students in numerical analysis courses based on Fortran.

Documentation can be found here.

Getting Started

Supported Compilers

The following combinations are supported:

Name	Vesrion	Platform	Architecture
GCC Fortran(MSYS2)	11	Windows 10	x86_64

Dependencies

• Plplot 5.15.0
• libgd 2.3.2
• Fortran-lang/fpm 0.5.0

PS: It seems that the plplot-fortran of the debian and ubuntu distribution warehouses does not take into account the *.mod files, so it is best to use cmake to install plplot by yourself.

Build Environment in MSYS2

pacman -S <arch>64/mingw-w64-<arch>-x86_64-plplot
pacman -S <arch>64/mingw-w64-<arch>-x86_64-libgd

Build with Fortran-lang/fpm

Fortran Package Manager (fpm) is a package manager and build system for Fortran.
You can build easy_plplot using provided fpm.toml:

export FPM_FFLAGS="-Ipath/to/plplot/include"
fpm run --example --all

To use easy_plplot within your fpm project, add the following lines to your fpm.toml file:

[dependencies]
easy_plplot = { git="https://github.com/zoziha/easy_plplot" }

Usage

See more usage🎯.

!> Create the project logo
program logo_prg
    use utilities_m
    use easy_plplot_m
    implicit none
    real(wp), parameter :: pi = acos(-1.0d0)

    call setup(device='svg', fileName='build/logo-%n.svg', figSize=[600, 500])
    call makeLogo
    call show()

contains

    subroutine makeLogo
        real(wp), dimension(:), allocatable :: x, y1, y2, y3

        x = linspace(0.0_wp, 1.0_wp, 100)
        y1 = x**2 - 1.0_wp
        y2 = 2.0_wp*x - 1.0_wp
        y3 = x
        y3 = cos(2.0_wp*PI*x)

        call figure()
        call subplot(1, 1, 1)
        call xylim(mixval(x), mixval([y1, y2, y3])*1.1_wp)

        call plot(x, y1, lineColor='b', lineWidth=1.2_wp)
        call plot(x, y2, lineColor='r', lineWidth=1.2_wp)
        call plot(x, y3, lineColor='c', lineWidth=1.2_wp)

        call ticks(lineWidth=1.2_wp)
        call labels('', '', '')
    end subroutine makeLogo

end program logo_prg

Links

• PlPlot
• hornekyle/plplotlib

Thanks to PlPlot written by Alan W. Irwin and other contributors.
Thanks to the Fortran interface of PlPlot written by Arjen Markus.
Thanks to the plplotlib high-level interfaces written by Dr Kyle Horne.

Thanks for your all contributions. Salute!

Other Plot-related Fortran Projects

• jacobwilliams/pyplot-fortran
• kookma/ogpf