Results 1 to 7 of 7

Thread: Trying to make a modified map of South America with real-world height data

Hybrid View

Previous Post Previous Post   Next Post Next Post
  1. #1
    Guild Expert johnvanvliet's Avatar
    Join Date
    Jul 2012
    Location
    N 42.39 W 83.44
    Posts
    1,091
    Blog Entries
    4

    Default

    For Goe-tiff's i use Nip2 ( a GUI for the vips image library )

    install vips first
    https://www.libvips.org/
    windows binarys are here
    https://github.com/libvips/build-win...es/tag/v8.13.0

    then the GUI nip2
    https://github.com/libvips/nip2
    a Microsoft windows binary is here
    https://github.com/libvips/nip2/releases/tag/v8.7.0

    nip2 is almost a cross of excel and gimp , and takes some getting used to

    for the Earth data you will want to " normalize" the 16 bit data from height in meters to the full 65536 data depth
    to do that use the nip2 math functions

    find the min. value
    subtract the min. value
    find the max. value
    and divide by the max.
    add a number ( 65536 )
    and multiply

    then convert to 16 bit unsinged integer and save
    Last edited by johnvanvliet; 09-25-2022 at 10:47 AM.
    --- 90 seconds to Midnight ---
    --------

    --- Penguin power!!! ---


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •