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🍬 Pretty Treemaps

Looking to run this for Go coverage? Check https://github.com/nikolaydubina/go-cover-treemap

Go Reference codecov Go Report Card OpenSSF Scorecard

Uses "Squarified Treemaps" (Mark Bruls, Kees Huizing, and Jarke J. van Wijk., 2000) algorithm.

$ go install github.com/nikolaydubina/treemap/cmd/treemap@latest 
$ echo '
Africa/Algeria,33333216,72
Africa/Angola,12420476,42
Africa/Benin,8078314,56
...
' | treemap > out.svg

example

Adjusting size

$ ... | treemap -w 1080 -h 360 > out.svg

example-narrow

$ ... | treemap -w 1080 -h 1080 > out.svg

example-square

Imputing heat

$ ... | treemap -impute-heat > out.svg

example-narrow

Different colorscheme

$ ... | treemap -color RdYlGn > out.svg

example-RdYlGn

Tree-Hue coloring when there is no heat

$ ... | treemap -color balanced > out.svg

example-balanced

Without color

$ ... | treemap -color none > out.svg

example-no-color

Format

Size and heat is optional.

</ delimitered path>,<size>,<heat>

Algorithms

Contributions

Welcomed!

References

Appendix A: Long Roots

When roots have one child multiple times it takes extra vertical space, which is very useful for narrow final dimensions.

example-long-roots

Can collapse them into one node example-long-roots-collapse

Long roots without collapsing somewhere deep inside

Long roots with collapsing somewhere deep inside

Appendix B: Less Illustrative Examples

Large dimensions and large tree (e.g. github.com/golang/go)

$ ... | treemap -w 4096 -h 4096 > out.svg

example-large