example: skia charts with inner html

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charts module & zoom/scroll/select & gantt chart aka https://doc.qt.io/qt-5/qtcharts-index.html

https://github.com/emweb/wt/blob/master/src/Wt/Chart/WAxisSliderWidget.C
https://www.reddit.com/r/cpp/comments/b2yryh/decent_charts_library_that_is_not_qt/
https://github.com/PhilJay/MPAndroidChart/blob/master/MPChartLib/src/main/java/com/github/mikephil/charting/renderer/BarChartRenderer.java
https://github.com/bobfrank/chart
https://www.webtoolkit.eu/widgets/graphics-charts/scatter-plot
https://en.m.wikibooks.org/wiki/OpenGL_Programming#The_scientific_arc
https://github.com/tidyverse/ggplot2
https://github.com/chartjs
https://github.com/wxIshiko/wxCharts
https://github.com/Kitware/VTK
http://vtk.1045678.n5.nabble.com/WebAssembly-Support-td5749615.html
https://github.com/arrayfire/forge
https://blog.bitsrc.io/11-javascript-charts-and-data-visualization-libraries-for-2018-f01a283a5727
https://github.com/plotly/plotly.js
https://github.com/d3/d3
https://devblogs.microsoft.com/xamarin/microcharts-elegant-cross-platform-charts-for-any-app/
https://github.com/aloisdeniel/Microcharts & https://github.com/aloisdeniel/Microcharts.Samples
https://github.com/qiuchengw/siachart/tree/0043fcf5539ea92b09e603ec7ceb02ed872ddfb3/src/charty/charty
https://sketch.cloud/s/3bppr
chart Buffer, Progressive rendering, quadtree, emory fragmentation, merge/group points
chartjs/Chart.js#4053
https://medium.com/@christopheviau/6-weird-tricks-for-insane-chart-performance-afd29f90f271
https://zoomcharts.com/developers/en/overview/architecture.html
ChartsOrg/Charts#29
http://square.github.io/crossfilter/ & plotly/plotly.js#1316
Mixed Chart: on same plot
https://www.chartjs.org/docs/latest/charts/mixed.html
Pictorials (Any SVG path can be used as a shape for your chart)
https://www.amcharts.com/javascript-charts/
css chart styling & html tooltips / labels
audio waveforms e.t.c. https://docs.juce.com/master/tutorial_audio_thumbnail.html