Functionality: Heatmaps

[raquelalegre]

Heatmaps to detect routes with the most ship tracks, etc

[raquelalegre]

CartoDB provides intensity maps and heat maps. The visualisations show message density rather than vessel density, which is misleading since the DB samples form the vessels don't have the same frequency. If we transform the data points to lines, the intensity maps will show what we need. In order to test that, we'll need to adapt this SQL snippet to work in CartoDB to build a new layer from the points using ST_Makeline. The data needs filtering though, as noted in #16.

This is a small subset of the data points transformed into lines. Note odd straight lines crossing continental land.

[raquelalegre]

This task involved database clean up that was not in the scope of the project. Once that is done, CartoDB heat maps and intensity maps as installed now would aid analysing the most frequently used shipping routes.