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Cant Download DEMs from global mapper

linh.nguyenthuy1991linh.nguyenthuy1991 Global Mapper UserPosts: 3
edited December 2014 in Elevation Data
2 weeks ago, i can not download Dem, i dont know why.
Please tell me a reason and repair it.

Comments

  • nlneilsonnlneilson Global Mapper User Posts: 18Trusted User
    edited December 2014
    Check what your request string is to get the data from the server.
    Copy and paste that into the address bar of your browser. That should download a file.
    Try the same thing with a layer that is visible, if that is .jpg, .png. you should be able to see it.
    With the dem data YOU will need to figure out if the data is correct. I you know which layer and level and can figure out the lat and lon for the tile then place that in your cache and then see if your app will display the dem data in that location.
    Debug and step through your code to see what your problem is.
  • linh.nguyenthuy1991linh.nguyenthuy1991 Global Mapper User Posts: 3
    edited December 2014
    nlneilson wrote: »
    Check what your request string is to get the data from the server.
    Copy and paste that into the address bar of your browser. That should download a file.
    Try the same thing with a layer that is visible, if that is .jpg, .png. you should be able to see it.
    With the dem data YOU will need to figure out if the data is correct. I you know which layer and level and can figure out the lat and lon for the tile then place that in your cache and then see if your app will display the dem data in that location.
    Debug and step through your code to see what your problem is.

    i downloaded DEMs according to https://www.youtube.com/watch?v=cSI1UzUUYRU but now is not.
    I try everything but not ok.
    thank you so much.
  • nlneilsonnlneilson Global Mapper User Posts: 18Trusted User
    edited December 2014
    I have never used the method shown in the u-tube link.
    Go through the steps I mentioned to find where your problem is.

    Maybe someone else can help you with an easier method. Maybe try removing GM and installing again.

    Regardless what method or code used the request string must be correct.
  • linh.nguyenthuy1991linh.nguyenthuy1991 Global Mapper User Posts: 3
    edited December 2014
    nlneilson wrote: »
    I have never used the method shown in the u-tube link.
    Go through the steps I mentioned to find where your problem is.

    Maybe someone else can help you with an easier method. Maybe try removing GM and installing again.

    Regardless what method or code used the request string must be correct.

    I removed and installed but not ok.
    Can i contact with u? what is ur email? can we connect by team viewer?
  • nlneilsonnlneilson Global Mapper User Posts: 18Trusted User
    edited December 2014
    Yes you can contact me. Left click on the user name then choose private message or email which is the way to contact anyone on this forum. If you post questions on the forum others may be able to help. I don't know what you mean by "team viewer"


    edit: High resolution dem data is not available all over the globe, Which area are you concerned with?
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