Issues with conversion of passed array to `color` in `add_plot` about pyplot-fortran

[beddalumia]

Ok, this is embarrassing: I just had a local y variable somewhere in the middle, shadowing the module-wide parameter Y. Sorry for bothering you for such a naive error on my part and thanks for your time!

[jacobwilliams]

I think you need to show me a full compilable version of the code that produces these errors. You've got something else wrong that I'm not seeing here. Maybe some uninitialized variables or something like that.

If I construct the following example based on the information I do have, I don't see these problems:

    program color_test

    use pyplot_module, only : pyplot, wp => pyplot_wp

    implicit none
    
    type(pyplot) :: plt   !! pytplot handler
    integer :: istat
    real(wp), parameter :: F(3) = [0.4510d0, 0.3098d0, 0.5882d0] ! Fortran-lang color 
    real(wp), parameter :: Y(3) = [0.9608d0, 0.8157d0, 0.0118d0] ! Yellow
 
    real(wp),dimension(3),parameter :: Ax = [1,2,3]
    real(wp),dimension(3),parameter :: Ay = [1,2,3]
    real(wp),dimension(3),parameter :: Bx = [1,2,3]
    real(wp),dimension(3),parameter :: By = [4,5,6]

    call plt%initialize(figsize=[20,10],title='color test')

    call plt%add_plot(Ax,Ay,label='',linestyle='o',markersize=5,color=F)
    call plt%add_plot(Bx,By,label='',linestyle='o',markersize=5,color=Y)

    call plt%savefig('color_test.png', pyfile='color_test.py',istat=istat)

    end program color_test

[beddalumia]

You're right, your minimal test case works properly in my project too! There has to be something subtle indeed. I'll now proceed to carefully bend your program towards my actual use case until it breaks, and then we can discuss. Thanks for the prompt!