KristenZhao / week-12

Carto in practice

Week 12

Class Outline

• GeoJSON and SQL through CartoDB

  • REMINDER: Always:clap:use:clap:the:clap:SQL:clap:console:clap:
  • Using CartoDB SQL within applications
  • You can use a REST client like Postman or Advanced REST Client

• SQL Input/Output

  • Adding geometries to your SQL queries
  • Results as GeoJSON
  • Results as JSON
  • Others

• SQL Performance

  • Ask for only the columns you need
  • Indices
  • Geometry simplification
  • Use the cartodb_id. Example:

SELECT
  *
FROM
  <TABLE>
WHERE
  cartodb_id = <some_id>

• Rasters
  • Tiling for TMS
  • PostGIS analysis (this is painful)
  • Alternatives