Practical use for the Elev layer & colourised DEM?

As mentioned in an earlier query, being new to this subject, is it possible to provide some links to where I can find information on how the ELEV layer and Colourised DEM can be used in areas that are not too overly specialised such as by a farmer, or surveyor for example? It would also be useful to know how best to estimate the approximate height difference on the map for a colour that is inbetween between 2 adjacent colourised height blocks on the scale on the map baseline.
Is it possible to easily produce a map with contour lines at lesser intervals than on a standard map from the ELEV layer or DEM without needing to be competent with software such as QGI?
Thanks

Ian Robert Wilde 12 de janeiro de 2016 15:10

Comentário oficial

There is really no practical use for the colorized DEM images other that to identify places in the map that didn't get reconstructed properly. When the elevation map is hosted on our site you get the elevation numbers at the bottom to help identify how high any point in the map is.

They are great for farmers to be able to identify drainages and slopes as long as the data is taken properly.

Look at the third sample down on our samples page to see an example with a elevation scale at the bottom:
https://www.mapsmadeeasy.com/samples

Generating contour lines is possible but is a little more technically involved. Search for "contour lines" here in the forums to get to the links.

Tudor 12 de janeiro de 2016 23:10

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4 comentários

That's great, many thanks.

Ian Robert Wilde 13 de janeiro de 2016 10:50 0 votos

Hi,

Im trying to work out the reference for the elevation scale.
It appears to me that they must be AMSL (Above Main Sea Level) and not AGL (Above Ground Level). Is that correct?

Axel Knauer 23 de fevereiro de 2016 22:05 0 votos

Axel, please refer to the following forum topic:

http://support.dronesmadeeasy.com/hc/en-us/community/posts/204995406-Inconsistent-Elevations

The aircraft records the images in an inaccurate and non-repeatable ASL number based on the GPS. Processing with Maps Made Easy will use the barometric sensor value (AGL) to do the processing and then use the ground reference image to get an offset value. It is a lot more accurate and repeatable this way.

Jay 23 de fevereiro de 2016 22:11 0 votos