fortplot_pcolormesh Module

Pcolormesh (pseudocolor mesh) plotting functionality

Provides 2D scalar field visualization using colored quadrilaterals on regular or irregular grids. Compatible with matplotlib pcolormesh.

Following SOLID principles: - Single Responsibility: Only handles pcolormesh data structures - Open/Closed: Extensible for different shading modes - Interface Segregation: Minimal, focused interface

Derived Types

type, public ::  pcolormesh_t

Pcolormesh data container Stores grid vertices and color data for quadrilateral mesh rendering

Components

Type	Visibility	Attributes		Name		Initial
real(kind=wp),	public,	allocatable	::	x_vertices(:,:)
real(kind=wp),	public,	allocatable	::	y_vertices(:,:)
real(kind=wp),	public,	allocatable	::	c_values(:,:)
character(len=20),	public		::	colormap_name	=	'viridis'
real(kind=wp),	public		::	vmin	=	-huge(1.0_wp)
real(kind=wp),	public		::	vmax	=	huge(1.0_wp)
logical,	public		::	vmin_set	=	.false.
logical,	public		::	vmax_set	=	.false.
logical,	public		::	show_edges	=	.false.
real(kind=wp),	public,	dimension(3)	::	edge_color	=	[0.0_wp, 0.0_wp, 0.0_wp]
real(kind=wp),	public		::	edge_width	=	0.5_wp
real(kind=wp),	public		::	alpha	=	1.0_wp
integer,	public		::	nx	=	0
integer,	public		::	ny	=	0

Type-Bound Procedures

procedure, public :: initialize_regular_grid
procedure, public :: initialize_irregular_grid
procedure, public :: get_data_range
procedure, public :: get_quad_vertices

Subroutines

public subroutine validate_pcolormesh_grid(x_coords, y_coords, c_data, error)

Validate grid dimensions for pcolormesh with flexible dimension support

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Arguments

Type	Intent	Optional	Attributes		Name
real(kind=wp),	intent(in)			::	x_coords(:)
real(kind=wp),	intent(in)			::	y_coords(:)
real(kind=wp),	intent(in)			::	c_data(:,:)
type(fortplot_error_t),	intent(out),	optional		::	error

public subroutine coordinates_from_centers(center_coords, edge_coords)

Infer vertex edges from center coordinates for uniform grids

Arguments

Type	Intent	Optional	Attributes		Name
real(kind=wp),	intent(in)			::	center_coords(:)
real(kind=wp),	intent(out)			::	edge_coords(:)

public subroutine create_regular_mesh_grid(x_1d, y_1d, x_2d, y_2d)

Create 2D meshgrid from 1D coordinate arrays Used internally for regular grid setup

Arguments

Type	Intent	Optional	Attributes		Name
real(kind=wp),	intent(in)			::	x_1d(:)
real(kind=wp),	intent(in)			::	y_1d(:)
real(kind=wp),	intent(out)			::	x_2d(:,:)
real(kind=wp),	intent(out)			::	y_2d(:,:)