Deck.gl data accessors

In deck.gl every layer type has a specific set of data accessors, see e.g. those for ScatterPlotLayer. This function sets all defaults for all available layer functions in this package.

Usage

dataAccessors(...)

Arguments

...

named accessors to be passed to the relevant deck.gl JavaScript Method.

Details

Please refer to the relevant deck.gl documentation for a more detailed description of the available layer functions. See Details for a list of currently available accessors, their defaults and the layer types they apply to.

If you want to map a certain accessor to a data specific value, you will need to add it to the data and provide the column name to the respective data accessor.

Currently, the following accessors are automatically set to he following defaults:

• getRadius = 1 (ScatterplotLayer)

• getColor = c(0, 0, 0, 255) (ScatterplotLayer, PathLayer)

• getFillColor = c(0, 0, 0, 130) (ScatterplotLayer, PolygonLayer)

• getLineColor = c(0, 0, 0, 255) (ScatterplotLayer, PolygonLayer)

• getLineWidth = 1 (ScatterplotLayer, PolygonLayer)

• getElevation = 1000 (PolygonLayer)

• getWidth = 1 (PathLayer)

NOTE:

• accessors getPosition, getPath, getPolygon are handled internally and should not be set!

• all get*Color accessors will accept either a vector of rgb(a) integers (0-255) or a hex color string (potentially also with alpha) - see examples.

Examples

# default accessors
dataAccessors()
#> $getRadius
#> [1] 1
#> 
#> $getColor
#> [1]   0   0   0 255
#> 
#> $getFillColor
#> [1]   0   0   0 130
#> 
#> $getLineColor
#> [1]   0   0   0 255
#> 
#> $getLineWidth
#> [1] 1
#> 
#> $getElevation
#> [1] 1000
#> 
#> $getWidth
#> [1] 1
#> 

# modify selected accessors
dataAccessors(
  getFillColor = c(0, 0, 255, 130),
  getLineColor = "#ff00ffaa"
)
#> $getRadius
#> [1] 1
#> 
#> $getColor
#> [1]   0   0   0 255
#> 
#> $getFillColor
#> [1]   0   0 255 130
#> 
#> $getLineColor
#> [1] "#ff00ffaa"
#> 
#> $getLineWidth
#> [1] 1
#> 
#> $getElevation
#> [1] 1000
#> 
#> $getWidth
#> [1] 1
#>