How to use various color palettes in Gnuplot_Class

[shishiousan]

In Gnuplot_Class of easifem, some color palettes are defined but not so many.
How to use other color palettes?

I explain this here with referencing other repositories for color palettes.

[shishiousan]

Gnuplot-palettes is a excellent repository which collects many color palettes for gnuplot.

It is recommended that you download all files or your favorite .pal files in the repo and place them wherever it is convenient for you.

Next, it is better to copy or to make a symlink of the palette file in the directory where your fortran program exists.

And then, you can add the following call statement to use the palette file for plotting.

TYPE(GnuPlot_) :: plt 
CALL plt%options("load 'colorPaletteName.pal'")

And you should remove the paletteName option from some plotting methods like

! wrong
CALL plt%contour(x=x, y=y, z=z, lspec="with lines",paletteName="jet", fill=.TRUE.)
! correct
CALL plt%contour(x=x, y=y, z=z, lspec="with lines", fill=.TRUE.)

Finally you can get a figure plotted with beautiful colors.

[shishiousan]

I can recommend the Scientific colour maps.
It has so many color palettes.
You can download a .pal file from the repository and use it in the same way mentioned above.