Convert Point Layer with attributes to raster

FME has multiple options for creating raster data from points.

Have a look at the NumericRasterizer, the ImageRasterizer and the MapnikRasterizer transformers.

The links are pointing to the documentation.

If you don't already have a corresponding number to category mapping, you need to set one up (ex class Water = 1). This can be done in a variety of ways, by joining a csv or other format, using an AttributeValueMapper . A quick and dirty dynamic way would be Aggregator (Group by category -> Counter->Deaggregator.

 

 

3DForcer to set the Z Value of the points to the numeric class

 

Numeric Rasterizer

 

 

To add a stringPalette you need to have an attribute containing the palette in the format:

 

STRING <string length>

 

<key> <value>

 

<key> <value>

 

 

This can be produced ahead of time if you already have a static mapping table, and then use an AttributeFileReader to add it as an attribute.

 

Otherwise it can be constructed in-situ from the original data.

 

 

Either way you then use a RasterPaletteAdder on the Raster

If you don't already have a corresponding number to category mapping, you need to set one up (ex class Water = 1). This can be done in a variety of ways, by joining a csv or other format, using an AttributeValueMapper . A quick and dirty dynamic way would be Aggregator (Group by category -> Counter->Deaggregator.

 

 

3DForcer to set the Z Value of the points to the numeric class

 

Numeric Rasterizer

 

 

To add a stringPalette you need to have an attribute containing the palette in the format:

 

STRING <string length>

 

<key> <value>

 

<key> <value>

 

 

This can be produced ahead of time if you already have a static mapping table, and then use an AttributeFileReader to add it as an attribute.

 

Otherwise it can be constructed in-situ from the original data.

 

 

Either way you then use a RasterPaletteAdder on the Raster

Great, thank you!

I use the 3DForcer with conditional values to add elevation data based on the category attribute of the points. Then the NumericRasterizer produces a raster with a given resolution and the AttributeFileReader reads the category names according to the z-values which are then added to the raster with RasterPaletteAdder.