Projection Support

Projection can be specified when writing to spatial formats via the Edit Projection dialog box. This feature is supported in the following file formats: MID/MIF, TAB, SHP, Oracle, and ESRI Personal Geo-Database.

Select a projection

If one of the mentioned spatial formats are chosen, Projection is visible in the Output Data Tool Configuration options.

If this box is blank, the default projection for both reading and writing in Alteryx is WGS84.

If the projection syntax is known, enter the projection in Fields are Projected Floating Points.

If the projection syntax is not known, click to launch the Edit Projection dialog box

Select Projection: expand the data trees to expose supported projections and click on your preferred projection

Find Projection: Enter a keyword related to the projection, then click Find.

Custom Projection (Well Known Name/Text): The custom settings for projection should accept the following different forms to define the preferred projection:

  • European Petroleum Survey Group (EPSG) Geodetic Parameter Dataset ID
  • EPSG:27700 same as British National Grid
  • Well Known Name
  •    "WGS84": same as "EPSG:4326"
  • Well Known Text (WKT), which uses at least two different dialects:
    • If the dialect is based on OpenGIS Coordinate Transformations specification, the definition does not require a prefix.
    • If the dialect is ESRI, the definition has to be prefixed by string ESRI::.
    • The WKT definition could also be a path to file, which contains the WKT definition. If the content of the file is ESRI WKT, then the path has to be prefixed with ESRI::
    • ESRI::C:\projections\british_national_grid.prj
  • Web Map Service (WMS) auto projection
  • 'AUTO:proj_id, unit_id, lon0, lat0'
  • PROJ.4 - Cartographic Projections Library coordinate system definition
  • "+proj=utm +zone=11 +datum=WGS84"