Elevation

ELEVATION

Usage

select elevation.srtm_getvalue(pointfromtext('POINT(<longitude> <latitude>)',4326))

I.e.

select elevation.srtm_getvalue(pointfromtext('POINT(6.99666 49.504)',4326))

or

select elevation.srtm_getvalue (pointfromtext('POINT(86.93333 27.983333)',4326));

When srtm3 does not give an elevation, srtm30 is used

On borders between cells the south and/or east cell is selected, also between tiles!

Credits

This postgresql adaptation of the SRTM3 v3 is made by F.P. Sluiter. The original 6000*6000 tiles are retiled to 60*60. New tiles containing only no_data values were removed. Dataset is subdivided in 27 tables that cover the globe.

april 2008, University of Amsterdam

Please put the following reference in publications:

"F.P. Sluiter, University of Amsterdam, april 2008, SRTM3 postgresql adaptation ; based on Jarvis A., H.I. Reuter, A. Nelson, E. Guevara, 2006, Hole-filled seamless SRTM data V3, International Centre for Tropical Agriculture (CIAT), available from http://srtm.csi.cgiar.org."

Original documentation: PROCESSED SRTM DATA VERSION 3

The data distributed here are in ARC GRID, ARC ASCII and Geotiff format, in decimal degrees and datum WGS84. They are derived from the USGS/NASA SRTM data. CIAT have processed this data to provide seamless continuous topography surfaces. Areas with regions of no data in the original SRTM data have been filled in using interpolation methods. A full technical report on this method is in preparation.

DISTRIBUTION

Users are prohibited from any commercial, non-free resale, or redistribution without explicit written permission from CIAT. Users should acknowledge CIAT as the source used in the creation of any reports, publications, new data sets, derived products, or services resulting from the use of this data set. CIAT also request reprints of any publications and notification of any redistributing efforts.

NO WARRANTY OR LIABILITY

CIAT provides these data without any warranty of any kind whatsoever, either express or implied, including warranties of merchantability and fitness for a particular purpose. CIAT shall not be liable for incidental, consequential, or special damages arising out of the use of any data.

ACKNOWLEDGMENT AND CITATION

We kindly ask any users to cite this data in any published material produced using this data, and if possible link web pages to the CIAT SRTM website (http://srtm.csi.cgiar.org).

Citations should be made as follows:

Jarvis A., H.I. Reuter, A. Nelson, E. Guevara, 2006, Hole-filled seamless SRTM data V3, International Centre for Tropical Agriculture (CIAT), available from http://srtm.csi.cgiar.org.