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xsaladdaysx

Extract Elevation From Google Earth

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I can't give you a straight answer, but maybe you should have a look at the sites below:

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http://www.nearby.org.uk/elevation-kml.php

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http://digitalmindsoft.eu/forums/showthread.php?8504-Tutorial-to-extract-heightmaps-from-Google-Earth-in-GEM

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Simple online tool to extract the elevation points.

http://www.zonums.com/online/equery.php

Steps:

  1) Copy/paste your data (lat lon or X Y) on left area or...

        Open a text file (txt,tab,csv)

  2) Define Input coordinate system & Format

  3) Click the "Query Elevation" button to get Elevations

  4) Define Output coordinate system

  5) Select Output File Format

  6) Choose Elevation Units

  7) Click the "Export" button

  You can repeat steps 4 to 7 without querying again.

  It might take up to a second per point location.

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They mentioned a web services,  SRTM data, 90m grid spacing..

90 m interval in regional scale consider acceptable :wink:

sure depend on your application. :grin:

Regards.

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You can check here for five free DEM download sites. I would recommend SRTM (Shuttle Radar Topography Mission). You can download 30m resolution over your area of interest. I did one recently but resample from the site to 10m before downloading. All the best :) 

Edited by imiltopnem

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