underdarkGIS’s avatarunderdarkGIS’s Twitter Archive—№ 15,596

  1. The distribution of vessel stop timestamps and durations changed drastically after #EverGiven's grounding. All those data points on the scatter plot diagonal tell a clear story. #DataViz #MovementDataAnalysis Many thanks to @VesselsValue for the data.
    1. …in reply to @underdarkGIS
      Before the grounding, the stop distribution nicely illustrates the canal schedule. Vessels have to wait until it's turn for their direction to go through. This behavior is also nicely illustrated by Steven's animation: @sdbernard/1375752473261015042
      1. …in reply to @underdarkGIS
        On a technical note: @HoloViews linked brushing with link_selections has been great to set up these plots. Some minor struggles included: brushing doesn't seem to work in the @geopandas GeoDataFrame map plot but it does work in the DataFrame scatter plot with tile background.
        1. …in reply to @underdarkGIS
          However, the DataFrame scatter plot with tile background does not preserve the axis ratio - resulting in distorted maps when linked brushing triggers zooming.