meshcolormap.hpp File Reference

Mesh based colormap graph for plotting. More...

#include <cairo.h>
#include <vector>
#include "palette.hpp"
#include "graph.hpp"
#include "colormap.hpp"
#include "coordmapper.hpp"
#include "interpolation.hpp"

Go to the source code of this file.

Classes
class	MeshColormap
	Class for colormap type plots on a regular rectangular mesh. More...

Enumerations
enum	interpolation_e { INTERPOLATION_CLOSEST = 0, INTERPOLATION_BILINEAR, INTERPOLATION_BICUBIC }
	Interpolation type enum. More...
enum	zscale_e { ZSCALE_LINEAR = 0, ZSCALE_LOG, ZSCALE_RELLOG }
	Z-scale enum. More...

Detailed Description

Mesh based colormap graph for plotting.

Enumeration Type Documentation

enum interpolation_e

Interpolation type enum.

The interpolation can be either 0th order (INTERPOLATION_CLOSEST), 1st order (INTERPOLATION_BILINEAR) or 3rd order (INTERPOLATION_BICUBIC).

Enumerator
INTERPOLATION_CLOSEST	Closest point interpolation.
INTERPOLATION_BILINEAR	Bilinear interpolation.
INTERPOLATION_BICUBIC	Bicubic interpolation.

enum zscale_e

Z-scale enum.

The zscale can be either linear scale (ZSCALE_LINEAR), logarithmic scale (ZSCALE_LOG) or relative logarithmic (ZSCALE_RELLOG). The relative logarithmic scaling follows the relation

, where x is prescaled to range [0,1]. The z-ranges completely contained on the negative side are inverted to positive and z-ranges both on negative and positive sides are scaled separately to provide magnification close to zero.

Enumerator
ZSCALE_LINEAR	Linear scale.
ZSCALE_LOG	Logarithmic scale.
ZSCALE_RELLOG	Relative logarithmic scale.