Rasterization

The Rasterization operator creates a raster from a point vector source. It offers two options for rasterization: A grid rasterization and a (gaussian) density rasterization (heatmap).

Errors

If the cutoff is not in [0, 1) or the stddev is negative, an error will be thrown.

Parameters

Name	Type	Description	Examples
spatialResolution	SpatialResolution	Spatial resolution of the output grid in x/y direction.	{"x":10,"y":10}
originCoordinate	Coordinate2D	Origin coordinate to which the raster grid is aligned.	{"x":0,"y":0}
densityParams	null or DensityParams		{"cutoff":0.01,"stddev":1}

Sources

Name	Type	Description
vector	VectorOperator	An operator that produces vector data.

Examples

{
    "type": "Raster",
    "operator": {
        "type": "Rasterization",
        "params": {
            "type": "grid",
            "spatialResolution": {
                "x": 10,
                "y": 10
            },
            "gridSizeMode": "fixed",
            "originCoordinate": {
                "x": 0,
                "y": 0
            }
        },
        "sources": {
            "vector": {
                "type": "OgrSource",
                "params": {
                    "data": "ne_10m_ports",
                    "attributeProjection": null,
                    "attributeFilters": null
                }
            }
        }
    }
}

{
    "type": "Raster",
    "operator": {
        "type": "Rasterization",
        "params": {
            "type": "density",
            "cutoff": 0.01,
            "stddev": 1
        },
        "sources": {
            "vector": {
                "type": "OgrSource",
                "params": {
                    "data": "ne_10m_ports",
                    "attributeProjection": null,
                    "attributeFilters": null
                }
            }
        }
    }
}