[Site gallery] CodeSandbox examples

[johsi-k]

https://codesandbox.io/s/scatterplot-temp-trends-btbs1
https://codesandbox.io/s/density-contour-plot-f1j82
https://codesandbox.io/s/candlestick-chart-3rhj2
https://codesandbox.io/s/violin-plot-1cknq
https://codesandbox.io/s/donut-chart-95pmg
https://codesandbox.io/s/stacked-area-chart-sti84
https://codesandbox.io/s/area-chart-jnf1t
https://codesandbox.io/s/heatmap-yrh7w
https://codesandbox.io/s/stacked-horizontal-bar-chart-rweto
https://codesandbox.io/s/isotype-plot-xl9tb
https://codesandbox.io/s/plain-scatterplot-pbizq
https://codesandbox.io/s/colored-scatterplot-w9ecl
https://codesandbox.io/s/population-pyramid-ou6ds