We propose extensions to the existing squarified layout algorithm that exploit the two-dimensional arrangement of treemap nodes more effectively. Our proposed spatial squarified layout algorithm provides a more consistent arrangement of nodes while maintaining low aspect ratios. It is suitable for the arrangement of data with a geographic component and can be used to create tessellated cartograms for geovisualization.
Spatially ordered treemap
![](https://xeno.graphics/wp-content/uploads/2018/03/geotreemap-1021x1024.jpg)