Georaster
Properties
getValues()?
optional getValues: (options) => Promise<TypedArray[][]>;
if raster initialized with a URL, this method is available to fetch a specific subset or 'window' without reading the entire raster into memory. If the window options do not align exactly with the source image then a new one is generated using the resampleMethod. The best available overview will also be used if they are available.
Parameters
| Parameter | Type |
|---|---|
options | WindowOptions |
Returns
Promise<TypedArray[][]>
height
height: number;
raster height in units of projection
maxs
maxs: number[];
Maximum cell value for each raster band. Indexed by band number
mins
mins: number[];
Minimum cell value for each raster band. Indexed by band number
noDataValue
noDataValue: number;
cell value representing "no data" in raster
numberOfRasters
numberOfRasters: number;
number of raster bands
pixelHeight
pixelHeight: number;
raster height in pixels
pixelWidth
pixelWidth: number;
raster width in pixels
projection
projection: number;
Projection identifier
ranges
ranges: number[];
difference between max and min for each raster band. Indexed by band number
toCanvas()
toCanvas: (options) => ImageData;
experimental! returns a canvas picture of the data.
Parameters
| Parameter | Type |
|---|---|
options | object |
options.height? | number |
options.width? | number |
Returns
ImageData
values
values: TypedArray[][];
raster values for one or more bands. Represented as [band, column, row]
width
width: number;
raster width in units of projection
xmax
xmax: number;
right boundary, in units of projection
xmin
xmin: number;
left boundary, in units of projection
ymax
ymax: number;
top boundary, in units of projection
ymin
ymin: number;
bottom boundary, in units of projection