Importing a new 2017 USGS map

Greg Kallio's Avatar

Greg Kallio

23 Jul, 2019 08:26 PM

Is it possible to import a 2017 USGS 1:24000 quad from TopoView as a layer or object? These newer edition quads have more accurate data for some trails than what is available on CalTopo.

  1. Support Staff 1 Posted by rmarcucci on 24 Jul, 2019 08:47 PM

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    Greg,

    Short answer is yes, long answer is it's complicated.

    1) Head to https://ngmdb.usgs.gov/topoview/viewer/#4/40.01/-100.06
    2) Download the maps, ideally in JPEG when available
    3) Convert it into a JPEG, if it's a TIFF or PDF
    3) Host that JPEG somewhere
    4) Add it as a geospatial image, including hand-aligning points

    Please let me know if you need any further assistance. We hope to add support for GeoPDFs within the next year, but that's the process for now.

    Thank you for using CalTopo,
    Rom

  2. rmarcucci closed this discussion on 24 Jul, 2019 08:47 PM.

  3. Gregory A Kallio re-opened this discussion on 22 Aug, 2019 11:41 PM

  4. 2 Posted by Gregory A Kalli... on 22 Aug, 2019 11:41 PM

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    I’m having problems adding a jpg as a geospatial image layer. My map is in google photos but when I paste the url and click “Set”, I get the message: “This image exceeds the maximum size of 16777216 pixels.” File size is only 6.4MB. I tried a 2.0MB map and got the same warning message.

    Do I need a subscription to Caltopo?

    Also, I’m not sure how to use the aligning points …

    Thanks,
    Greg

  5. Support Staff 3 Posted by rmarcucci on 23 Aug, 2019 02:56 AM

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    Greg,

    Can you send the link over this way. The link needs to be directly to the image and only the image, not to an album page containing the image, In order to link an image it has to be hosted at a static location. I am not 100% sure that it won't "move" because of how google hosts images even if it is only to the photo.

    You don't need a subscription to CalTopo to add a geospatial image.

    Regarding aligning points, here we go:
    Pick 2 points on the image that are easy to find on the basemap as well, ideally somewhat diagonally located from each other

    Rightclick georeference: mark point 1 on the image
    Rightclick georeference: mark point 2 on the image
    Turn opacity of the image to 0
    Rightclick georeference: mark latlong1 match the point on the basemap
    Rightclick georeference: mark latlong2 match the point on the basemap

    I hope this helps. The whole process is a bit clunky and it is on our radar to upgrade.

    Thank you for using CalTopo,
    Rom

  6. rmarcucci closed this discussion on 23 Aug, 2019 02:56 AM.

  7. Gregory A Kallio re-opened this discussion on 23 Aug, 2019 03:42 AM

  8. 4 Posted by Gregory A Kalli... on 23 Aug, 2019 03:42 AM

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  9. Support Staff 5 Posted by rmarcucci on 23 Aug, 2019 01:59 PM

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    Greg,

    I'm getting a 404 error file not found. Either you didn't copy the entirety of the link, or we are already having the problem of google moving the photo and not hosting it statically. I might try to host elsewhere if you continue to struggle with Google.

    Rom

  10. rmarcucci closed this discussion on 23 Aug, 2019 01:59 PM.

  11. Gregory A Kallio re-opened this discussion on 23 Aug, 2019 06:14 PM

  12. 6 Posted by Gregory A Kalli... on 23 Aug, 2019 06:14 PM

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    I tried this link https://gregkallio.smugmug.com/Maps/i-GJNQFgS/A and got the same results. I guess I need to find another host … GK

  13. 7 Posted by Gregory A Kalli... on 23 Aug, 2019 08:07 PM

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    Apparently, I do not have access to any servers that use static hosting … GK

  14. Support Staff 8 Posted by rmarcucci on 23 Aug, 2019 09:46 PM

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    Greg,

    You don't need to have your own server. There are a host of free services out there. Photobucket is the first that comes to mind, but there are many other options if you prefer another.

    Let me know if you need any further assistance,
    Rom

  15. rmarcucci closed this discussion on 23 Aug, 2019 09:46 PM.

  16. Gregory A Kallio re-opened this discussion on 23 Aug, 2019 10:35 PM

  17. 9 Posted by Gregory A Kalli... on 23 Aug, 2019 10:35 PM

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    Hi Rom,

    Yes, Photobucket seems to work but Dropbox does not. The layer came in with a Photobucket banner and rather poor resolution – it’s a 6.4 MB image so maybe Photobucket reduced it.

    Thank you for all your help. I think I will wait until CalTopo supports GeoPDF before I use the new USGS topos. Will there ever be an option to upload a map image from one’s own computer?

    I use Caltopo frequently but just starting to learn some of its advanced features. I appreciate all the hard work you have put into this – thank you!

    Greg Kallio

  18. Support Staff 10 Posted by rmarcucci on 23 Aug, 2019 11:11 PM

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    Greg,

    I didn't realize photobucket compresses and adds a banner. I use Wordpress for hosting personally, and I believe they have free options if you're looking to get a little more in depth.

    I'm honestly not sure how the new protocol will work or when it would happen. I just know we are aware that the current process is clunky.

    Thank you for the kind words regarding CalTopo,
    Rom

  19. rmarcucci closed this discussion on 23 Aug, 2019 11:11 PM.

  20. Ben Lantow re-opened this discussion on 23 Aug, 2019 11:29 PM

  21. Support Staff 11 Posted by Ben Lantow on 23 Aug, 2019 11:29 PM

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    Greg,
    Just to tack this on for the public good... At some point we are going to allow folks to upload some photos/geoPDFs from their own computer to be hosted on CalTopo. It will be part of a paid subscription most likley as well. However, we aren't there yet and are focused on the app for now (at least into October). But absolutely something we recognize a need for.

    Best,
    Ben

  22. rmarcucci closed this discussion on 25 Aug, 2019 09:27 PM.

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