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regl-splom

v1.0.14

Published

Scatterplot matrix for 2d plots

Downloads

919,287

Readme

regl-splom

Matrix of scatter plots. A wrapper over regl-scatter2d for optimized intersected data rendering.

  • [x] minimal GPU memory footprint: N vs N*N in direct regl-scatter2d passes case.
  • [ ] optimized performance due to binary trees for 1d point clustering, opposed to default 2d quad clustering.

Usage

npm install regl-splom

let regl = require('regl')({extensions: 'oes_element_index_uint'})
let createMatrix = require('regl-splom')

let scatterMatrix = createMatrix(regl)

// pass data and views to display
scatterMatrix.update(
	{ data: [[], [], ...], ranges, domains, viewport, size, color, border },
	{ data: [[], [], ...], ranges, domains, viewport, size, color, border }
)

// draw views by ids
scatterMatrix.draw(0, 1, ...views)

API

splom = createSplom(regl)

Creates scatter matrix instance.

splom.update(trace1, trace2, ...traces)

Define passes for draw method. Every trace can include the following options:

Option | Description ---|--- data | An array with arrays for the columns. range | Array with data ranges corresponding to data. Every range can be an array [min, max] or [minX, minY, maxX, maxY]. If undefined - detected automatically. domain | Array with domains for the data, ie. the area data dimension holds within the viewport. Each domain can be an array [min, max] for symmetric placement or [minX, minY, maxX, maxY] for precise position. Domain values are from 0..1 interval, defining what area of the viewport a dimension holds. By default domains cover viewport evnely. padding | Padding within domains (in px), or list of paddings per-domain. By default [0,0,0,0]. Can be a number, an array or any rectangle format. color, size, borderColor, borderSize, opacity | Points style. marker | Points marker. diagonal | Show or hide diagonal. upper | Show or hide upper half matrix. lower | Show or hide lower half matrix. viewport | Area that the plot holds within the canvas. Can take any rectangle format.

splom.draw(...ids?|...points?)

Draw all defined passes, or only selected ones provided by ids. Optionally define point indexes to render.

// draw 1 and 3 passes
splom.draw(1, 3)

// draw 1, 2 and 3 points from the first pass and 3 point from the second pass
splom.draw([1, 2, 3], [3])

splom.destroy()

Dispose renderer and all the associated resources

Related

License

© 2018 Dmitry Yv. MIT License

Development supported by plot.ly.