This example demonstrates the use of the 'reverse' optional argument to reverse the order of a colormap. You can create your own colormap using that array. The name of your colormap must conform to the max length defined in colormap_parameters.f90 Use the create() method instead of the set() method. We create PPM files (binary encoded by default) for each built-in colormap. The built-in z=f(x,y) test function is in the [0, 2] range: Cubehelix can also accept other parameters (varargs array):
Or you can download it from a .txt file. Use the load() method instead of the set() method.
Type | Attributes | Name | Initial | |||
---|---|---|---|---|---|---|
type(Colormap) | :: | cmap | ||||
type(Colormap) | :: | custom_cmap | ||||
integer | :: | i | ||||
integer, | dimension(0:7, 3) | :: | my_colormap | = | reshape([198, 29, 32, 189, 21, 56, 171, 82, 150, 102, 81, 156, 38, 53, 108, 5, 65, 40, 221, 199, 44, 237, 191, 44], shape(my_colormap), order=[2, 1]) |
A discrete colormap with 8 levels, by @alozada, resembling the color changes in red cabbage (containing Anthocyanins) with pH: |
program demo_reverse use forcolormap, only: Colormap, colormaps_list, wp use forcolormap_utils, only: test_colormap implicit none integer :: i type(Colormap) :: cmap, custom_cmap !> A discrete colormap with 8 levels, by @alozada, resembling the color !> changes in red cabbage (containing Anthocyanins) with pH: integer, dimension(0:7, 3) :: my_colormap = reshape( [ & 198, 29, 32, & 189, 21, 56, & 171, 82, 150, & 102, 81, 156, & 38, 53, 108, & 5, 65, 40, & 221, 199, 44, & 237, 191, 44 ], & shape(my_colormap), order = [2, 1] ) !> You can create your own colormap using that array. The name of your !> colormap must conform to the max length defined in colormap_parameters.f90 !> Use the create() method instead of the set() method. call custom_cmap%create('red_cabbage_reverse', 0.0_wp, 2.0_wp, my_colormap, reverse=.true.) call custom_cmap%colorbar('red_cabbage_reverse_colorbar') call test_colormap(custom_cmap, 'red_cabbage_reverse_test') !> We create PPM files (binary encoded by default) for each built-in colormap. !> The built-in z=f(x,y) test function is in the [0, 2] range: do i = 1, size(colormaps_list) call cmap%set(trim(colormaps_list(i)), 0.0_wp, 2.0_wp, reverse=.true.) call cmap%colorbar(trim(colormaps_list(i))//'_reverse_colorbar') call test_colormap(cmap, trim(colormaps_list(i))//'_reverse_test') print '("Colormap ", A30, " has ", I0, " levels")', trim(cmap%get_name()), cmap%get_levels() end do !> Cubehelix can also accept other parameters (varargs array): call cmap%set("cubehelix", 0.0_wp, 2.0_wp, 1024, [0.5_wp, -1.0_wp, 1.0_wp, 1.0_wp], reverse=.true.) ! We change the name for the output test files: call cmap%colorbar('cubehelix_customized_reverse_colorbar') call test_colormap(cmap, 'cubehelix_customized_reverse_test') !> Or you can download it from a .txt file. !> Use the load() method instead of the set() method. call custom_cmap%load("test_map_to_load.txt", 0.0_wp, 2.0_wp, reverse=.true.) call custom_cmap%colorbar('a_loaded_reverse_colorbar') call test_colormap(custom_cmap, 'a_loaded_reverse_colormap_test') call custom_cmap%print() end program demo_reverse