QwtColorMapPreset类 参考

Registry of named color map presets for scientific visualization. 更多...

#include <qwt_colormap_preset.h>

Public 类型
enum	Preset {   Viridis , Plasma , Inferno , Magma ,   Cividis , Jet , Hot , Cool ,   Spring , Summer , Autumn , Winter ,   Gray , Bone , Copper , Rainbow ,   Hsv , Turbo , CoolWarm , RdYlBu ,   RdYlGn , Spectral }
	Built-in colormap presets 更多...

静态 Public 成员函数
static std::unique_ptr< QwtLinearColorMap >	create (Preset preset)
	Create a QwtLinearColorMap from a preset enum
static std::unique_ptr< QwtLinearColorMap >	create (const QString &name)
	Create a QwtLinearColorMap from a preset name (case-insensitive)
static QStringList	availablePresets ()
	Get a list of all available preset names
static QVector< QPair< double, QColor > >	colorStops (Preset preset)
	Get the color stops for a preset (position, color pairs)
static QString	presetName (Preset preset)
	Convert a preset enum to its string name
static Preset	presetFromName (const QString &name)
	Convert a string name to a preset enum (returns -1 if not found)

详细描述

Registry of named color map presets for scientific visualization.

QwtColorMapPreset provides factory methods to create QwtLinearColorMap instances from well-known colormap names used in scientific computing and data visualization (matplotlib, MATLAB, etc.).

Each preset is defined by a set of color stops at specific positions in the [0.0, 1.0] range, enabling smooth multi-stop gradient interpolation.

Example

QwtLinearColorMap cmap = QwtColorMapPreset::create("viridis");
// Use cmap->rgb(0.0, 100.0, 50.0) to get the color at the midpoint

参见

QwtColorMap, QwtLinearColorMap

成员枚举类型说明

Preset

enum QwtColorMapPreset::Preset

Built-in colormap presets

枚举值
Viridis	Perceptually uniform purple-green-yellow (matplotlib default)
Plasma	Perceptually uniform purple-orange-yellow
Inferno	Perceptually uniform black-red-orange-yellow
Magma	Perceptually uniform black-purple-orange-yellow
Cividis	Perceptually uniform blue-gray-yellow (colorblind-friendly)
Jet	Blue-cyan-green-yellow-red (MATLAB default)
Hot	Black-red-yellow-white
Cool	Cyan-white
Spring	Magenta-yellow
Summer	Green-white
Autumn	Red-yellow-white
Winter	Blue-white
Gray	Black-white grayscale
Bone	Black-gray-white with blue tint
Copper	Black-copper
Rainbow	Red-yellow-green-cyan-blue-magenta-red
Hsv	Full HSV cycle
Turbo	Improved rainbow (Google's turbo)
CoolWarm	Blue-white-red diverging
RdYlBu	Red-yellow-blue diverging
RdYlGn	Red-yellow-green diverging
Spectral	Multi-hue diverging

成员函数说明

availablePresets()

QStringList QwtColorMapPreset::availablePresets ( )

static

Get a list of all available preset names

返回

List of preset name strings

colorStops()

QVector< QPair< double, QColor > > QwtColorMapPreset::colorStops ( Preset  preset )

static

Get the color stops for a preset (position, color pairs)

Get the color stops for a preset

参数

preset

Preset selector

返回

Vector of (position, color) pairs

create() [1/2]

std::unique_ptr< QwtLinearColorMap > QwtColorMapPreset::create ( const QString &  name )

static

Create a QwtLinearColorMap from a preset name (case-insensitive)

参数

name	Preset name string

返回

A QwtLinearColorMap with the preset's color stops applied

create() [2/2]

std::unique_ptr< QwtLinearColorMap > QwtColorMapPreset::create ( Preset  preset )

static

Create a QwtLinearColorMap from a preset enum

Create a QwtLinearColorMap from a preset

参数

preset

Preset selector

返回

A QwtLinearColorMap with the preset's color stops applied

presetFromName()

QwtColorMapPreset::Preset QwtColorMapPreset::presetFromName ( const QString &  name )

static

Convert a string name to a preset enum (returns -1 if not found)

Convert a string name to a preset enum

参数

name	Case-insensitive preset name

返回

Preset enum value, or Viridis if not found

presetName()

QString QwtColorMapPreset::presetName ( Preset  preset )

static

Convert a preset enum to its string name

参数

preset

Preset selector

返回

Lowercase name string

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该类的文档由以下文件生成:

• /home/runner/work/QWT/QWT/src/core/qwt_colormap_preset.h
• /home/runner/work/QWT/QWT/src/core/qwt_colormap_preset.cpp