Crosslet

Crosslet is a free small (22k without dependencies) JavaScript widget for interactive visualisation and analysis of geostatistical datasets. You can also use it for visualizing and comparing multivariate datasets.

It is a combination of three very powerful JavaScript libraries:

• Leaflet, an elegant and beautiful mapping solution, and
• Crossfilter, a library for exploring large multivariate datasets in the browser.
• D3, a data driven way of manipulating objects.

Crosslet also supports TopoJSON, a GeoJSON extension that allows to present geometry in a highly compact way.

Crosslet is written in CoffeeScript and uses less for styling.

Download crosslet-1.1.zip (44k js and css)

Documentation & Tutorials

• Introduction, download and installation instructions
• Developer's Reference
• Tutorials:
  • TODO

Examples

• US election results per county
• GP patients satisfaction survey (England) - 9000 areas, might be very slow in non webkit browsers.
• UK census 2011: religions in England and Wales

Github

• Github page
• Wiki
• Source of this website and examples

Useful links

• Using Color in Maps, by Visual.ly
• Let's make a map, from Mike Bostock
• D3 + Leaflet, the basic concept behind Crosslet
• Correlation is not causation, Nathan Greens' article on the fact that correlation does not imply causation.

Disclaimer

Crosslet uses some latest web technologies including SVG, therefore it is not compatible with older browsers and browser which do not support SVG. Complex maps with more then a thousand items might cause Crosslet perform slower on non webkit based maps.