niwa / geoapis

A Python package for simply downloading publicly available web-hosted geo-spatial data. View API docs at: https://niwa.github.io/geoapis/

MIT License

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Add support for pulling down raster data from LINZ data service #2

Closed rosepearson closed 1 year ago

rosepearson commented 3 years ago

Add support for pulling raster information down the LDS or Koordinates directly.

Example layers include:

LDS - https://data.linz.govt.nz/layer/53621-wellington-lidar-1m-dem-2013-2014/

Koordinates documentation:

raster-query - given an x,y pair this gives the value of the raster layer at that location. I.E. this is not how you download the raster layer or a tile in the raster layer.

Notes

Note that for area photography example WMTS and x/y/z access are supported. This does not appear to be available for elevation data.

There is a Koordinates Python API client . We should check this to see if geoapis is duplicating any of this. Also, this likely supports the raster access and download.

There are also the Koordinates Admin APIs. It's not clear if these are open or not, but they may provide the raster tile download we are after. In particular the Exports API may be helpful.

rosepearson commented 2 years ago

Note this is the API documentation for Koordinates - https://help.koordinates.com/query-api-and-web-services/koordinates-query-api-non-technical-users/

rosepearson commented 1 year ago

Looking at this now - will incorporate the work undertaken by Matt Wilkins in the restricted access repository https://git.niwa.co.nz/flood-resilience-aotearoa/cylc-create-flood-domains/-/blob/main/bin/download_slope_wms.py