XPost: sci.geo.satellite-nav, alt.satellite.gps   
   From: curmudgeon@spam.edu   
      
   mark wrote at Wed, 21 Sep 2022 17:31:47 +0200 :   
      
   > Is there a way to put the gps coordinates onto a photo?   
   >   
   > I have Windows 10 and Android 11.   
   > I am working on a project with multiple very large apartment complexes.   
   > I have a paper colored apartment complex map for each complex.   
   > The map does not seem to be online so it's a paper handout.   
   > At each complex I'm expected to visit a set of given units each day for   
   > various reasons and all they give me is this paper map to find each unit.   
   >   
   > That works. But it's inefficient.   
   > They do this to everyone, not just to me.   
   >   
   > We're expected to use the paper map with hundreds of apartments and dozens   
   > of buildings, where the numbering system for buildings usually makes sense   
   > but not for the apartments. Sometimes we even need to visit parking spaces   
   > as we have vehicles parked which we have to put notices on where the   
   > numbers make no sense on purpose for security reasons.   
   >   
   > Once I find a given location, I've been using OSMand+ to save the current   
   > position. First off I'm surprised that OSMAnd+ doesn't have a "Save Current   
   > Location" option which I thought almost all map programs would have had.   
   >   
   > These apartments all have individual outside entrances so it's not like a   
   > hotel where you go down a long hallway to serially find the door number you   
   > need.   
   >   
   > So what I do is establish my current location & long press the blue dot.   
   >   
   > When I get to the right apartment door I step outside the entrance on the   
   > ground floor and press as close as I can on the blue location dot which   
   > pops up a "Looking up address" OSMAnd+ menu which usually gives the same   
   > address for all locations. Then I press the "Add" star and change the name   
   > to "Complex Bathroom" or "Complex Pool" or more commonly "ComplexBldgApt"   
   > such as "RedwoodApts Bldg15 Apt489" or "RedwoodApts Lot15 Spot489" or   
   > something like that.   
   >   
   > Once I've renamed the current pressed location, I hit Save and then I can   
   > navigate walking after that where OSM can talk me through the steps even   
   > when the phone is in my pocket and my hands are full.   
   >   
   > Having to fatfinger the location isn't as accurate as having a "Save   
   > Current Location" button would be but it's definitely good enough for   
   > government work as they say.   
   >   
   > When I need to navigate to a given spot I first point the phone north with   
   > a compass app because moving compass navigation directions aren't so easy   
   > when walking and then I orient the OSM map toward that heading to get my   
   > initial bearings of which way to start walking and about how far it will   
   > be. Usually I'm carrying tools or supplies so my hands are almost always   
   > full.   
   >   
   > That's all I need but I'm working with others from the local work to future   
   > group where everyone else wastes time trying to find the building & apt.   
   >   
   > What I want is take a jpeg picture of the paper colored apartment complex   
   > map which I can then hand to each person whose phone can then point to the   
   > location.   
   >   
   > All of that brings me to my question of how to make that jpeg gps map.   
   >   
   > Is there a way to put the gps coordinates onto a photo?   
      
   I don't know if a georeferencing program exists on Windows or on Android   
   for jpeg images but what you need for your jpeg is similar to what common   
   georeferencing software does for a PDF to establish the coordinates for   
   every point on the grid of the jpeg.   
   https://www.usgs.gov/faqs/what-geopdfr   
      
   Once you associate the coordinate grid onto that jpeg file, the map program   
   will be able to navigate based on those reference points.   
      
   Those talking about exif data don't understand how navigation works.   
      
   It's common to georeference a PDF but a google search finds you can   
   georeference an image also if you know what you're doing.   
   https://mdl.library.utoronto.ca/technology/tutorials/how-georefe   
   ence-images-arcgis   
      
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