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Support for raster graphics

See original GitHub issue

To support something like annotation_raster() in our R package, which would lead to awesomeness such as conversion of ggmap (people have been asking for this for a long time), I need support for displaying a matrix of arbitrary color codes. Using a heatmap seems out of the question since we can’t generate a sensible colorscale, and drawing a marker for each cell seems inefficient. Any thoughts on how to approach this?

Issue Analytics

State:
Created 8 years ago
Comments:13 (8 by maintainers)

Top GitHub Comments

1reaction

mdtuszcommented, Jun 28, 2016

The raster type will likely be used more for raw raster data rather than images - you can add images however using layout.images and setting the xref and yref to”” the respective axes. Note however that the image will be distorted when the plot bounds are changed (i.e. when zoomed).

0reactions

jackparmercommented, Jun 28, 2017

Thanks @ssfrr . If you have a link to a chart (both an SVG and GL version), that would help to debug. Here’s a link to a GL audio spectrogram for example: https://plot.ly/~PythonPlotBot/829

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