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An encapsulation of a RasterBand overview functionality.

Methods

count () Integer

Returns the number of overviews.

Returns:

Integer
forEach
(
  • callback
)

Defined in lib/gdal.js:412

Iterates through all overviews using a callback function.

Parameters:

  • callback Function

Example:

band.overviews.forEach(function(overviewBand, i) { ... });
get
(
  • index
)
gdal.RasterBand

Fetches the overview at the provided index.

Parameters:

  • index Integer

    0-based index

Returns:

getBySampleCount
(
  • samples
)
gdal.RasterBand

Fetch best sampling overview.

Returns the most reduced overview of the given band that still satisfies the desired number of samples. This function can be used with zero as the number of desired samples to fetch the most reduced overview. The same band as was passed in will be returned if it has not overviews, or if none of the overviews have enough samples.

Parameters:

  • samples Integer

Returns:

map
(
  • callback
)

Defined in lib/gdal.js:425

Iterates through all raster overviews using a callback function and builds an array of the returned values.

Parameters:

  • callback Function

    The callback to be called with each Geometry

Example:

var result = band.overviews.map(function(overviewBand, i) {
    return value;
});