cartopy.io.srtm.SRTM3Source¶

class cartopy.io.srtm.SRTM3Source(downloader=None, max_nx=3, max_ny=3)[source]¶

A source of SRTM3 data, which implements Cartopy’s RasterSource interface.

__init__(downloader=None, max_nx=3, max_ny=3)[source]¶

Parameters

downloader (cartopy.io.Downloader instance or None) – The downloader to use for the SRTM3 dataset. If None, the downloader will be taken using cartopy.io.Downloader.from_config with (‘SRTM’, ‘SRTM3’) as the target.
max_nx – The maximum number of x tiles to be combined when producing a wider composite for this RasterSource.
max_ny – The maximum number of y tiles to be combined when producing a taller composite for this RasterSource.

Methods

`__init__`([downloader, max_nx, max_ny])	param downloader The downloader to use for the SRTM3 dataset. If None, the
`combined`(lon_min, lat_min, nx, ny)	Return an image and its extent for the group of nx by ny tiles starting at the given bottom left location.
`fetch_raster`(projection, extent, ...)	Fetch SRTM elevation for the given projection and approximate extent.
`single_tile`(lon, lat)
`srtm_fname`(lon, lat)	Return the filename for the given lon/lat SRTM tile (downloading if necessary), or None if no such tile exists (i.e.
`validate_projection`(projection)	Raise an error if this raster source cannot provide images in the specified projection.

Attributes