fortplot_contour_tracing

Contour tracing and segment chaining module

This module handles the low-level contour tracing algorithm (marching squares segment extraction), segment chaining via hash-table lookup, and drawing of smoothed contour chains.

Procedures: trace_contour_level, chain_and_draw_segments, extend_chain_forward_hash, extend_chain_backward_hash, endpoint_hash, points_match, draw_smoothed_chain

Uses

Subroutines

public subroutine trace_contour_level(backend, plot_data, level, xscale, yscale, symlog_threshold, x_min_t, x_max_t, y_min_t, y_max_t)

Trace a single contour level with smoothing

Arguments

Type	Intent		Name
class(plot_context),	intent(inout)	::	backend
type(plot_data_t),	intent(in)	::	plot_data
real(kind=wp),	intent(in)	::	level
character(len=*),	intent(in)	::	xscale
character(len=*),	intent(in)	::	yscale
real(kind=wp),	intent(in)	::	symlog_threshold
real(kind=wp),	intent(in)	::	x_min_t
real(kind=wp),	intent(in)	::	x_max_t
real(kind=wp),	intent(in)	::	y_min_t
real(kind=wp),	intent(in)	::	y_max_t

fortplot_contour_tracing Module

Contents

Subroutines

Uses

Subroutines

public subroutine trace_contour_level(backend, plot_data, level, xscale, yscale, symlog_threshold, x_min_t, x_max_t, y_min_t, y_max_t)

Arguments