densityScatterChart

A scatter where the color (and/or transparency) of the markers indicates the density of points.

densityScatterChart

Density Scatter Chart is a scatter where the color (and/or transparency) of the markers indicates the density of points.

The chart is implemented using ChartContainer, and is intended to highlight some good practices for using this tool to develop a chart. Read the official documentation for more information about ChartContainer and developing your own custom chart classes.

How to use

Create a chart where color varies with density

x=randn(1000,1);
y=randn(1000,1)
densityScatterChart(x,y);   

Set properties by passing in Name-Value pairs

% Create a chart where transparency varies with density:
densityScatterChart(x, y, 'UseColor', false, 'UseAlpha', true);

% Specify a title:
densityScatterChart(x, y, "Title", "My density scatter chart");

Set properties after creating the chart:

d=densityScatterChart(x, y);

% Make a steeper density view
d.DensityExponent = 2;

% Use alpha, but make it a subtle effect by using a small range:
d.AlphaRange = [.2 .8];

Changes in version 1.1

Bug Fixes:

• Fixed ColorbarVisible, which in turn enables the toolbar button in the figure window.
• Fixed behavior of custom set colormaps when saving to and loading from .fig files.
• Fixed 'ksdensity' option for DensityMethod.
• Added extrapolation logic for the 'binned' DenistyMethod to ensure that all points get assigned a color/alpha.

Features:

• Added XLabel, YLabel, and ColorbarLabel properties.
• Added an unmanage method which converts the chart into 'traditional' MATLAB graphics objects for advanced editing.
• Moved property help to a linked static method.