Transform

TRANSFORM DESCRIPTION
 

 

 

 

transform1

  • Attribute Filter – Use this element to filter records via its attribute values. Don’t forget to click the ‘Add’ button after defining each attribute filter.
  • Clip – This element allows data to be ‘clipped’ or ‘cookie cut’ to a particular area. The clipping area can be defined through user entered coordinates or via a polygon from an input layer.
  • Coordinates – This elements allows for coordinate system transformations. When connected to the input and/or output elements, click the Verify button to automatically populate the existing coordinates systems of these elements in the Existing Source Coordinate System(s) and Existing Destination Coordinate System(s) combo boxes. You can then select the appropriate input and output coordinate systems to perform the transformation.
  • Dataset Merge – Use this element to combine layers and datasets from multiple input elements into a single dataset. This may be useful when wanting to have a single query across multiple layers which can only be performed when all the layers are in the same dataset.
  • Filter Layers – By default, all input elements with multiple layers (i.e. a dataset) include all layers from the input dataset. Use this element to filter the required layers.
  • Geom to WKT – Use this element to transform geometry fields into Well-Known text format. A new text field will be created with the Well-Known text format of the selected geometry.
  • Map Fields – Use this element to map fields from one layer to another layer. Alternatively you can create a new layer with difference field names or removed fields.
  • Point to Text – Use this element to convert a Point geometry field to text X, Y and Z fields.
  • Rename Layer- Use this element to rename layers. The Layer Map table contains all the layer renaming rules that will be applied by this element. Don’t forget to press the Add button when creating layer renaming rules.
  • SQL Query – Use this element to perform SQL queries on the input layer / datasets. SQL queries including spatial SQL queries supported by PostGIS can be used by default.
  • Text to Point – Use this element to convert coordinates stored in X, Y and Z text fields to Point geometry.
  • Union Layers – This element performs a Union All query on two input layers. It does not check or remove duplicates and will not be successful if the two input layers do not have similar schema.
  • WKT to Geom – This element converts a text field with a Well-Known text geometry definition into a geometry field.