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Transform Conversion to Lat/Long
j.carnes2553@...
Hello everyone,
In the picture below I am using rasterio to open a .tif file and then transform the those bounds to get the upper left and lower right points of the dataset. My question is around how to convert a point that is not from the bounds and is just an x,y point in meters in a specific epsg. I want to be able to convert multiple points that are in the x,y meter format to a lat/long format all within this epsg. Another question I have is around how applicable this is to creating new distances. For example is I am at the upper left spot and increase the x by 5 meters and convert that coordinate back to lat/long, does that mean that the two lat/long coordinates are now exactly 5 meters apart? I am quite new to the GIS world so any help would be greatly appreciated, thanks! I


Guillaume Lostis <g.lostis@...>
Hi, From the screenshot you have provided, we can see that the CRS of your image (EPSG:32617) is a UTM zone, so its unit is indeed in meters. That means that if you take a point with coordinates expressed in the CRS of your image, that you add 5 meters to the x coordinates, and that you convert both points to lat/lon, your two points will indeed be separated by 5 meters. Here is a code snippet showing what you want to achieve, that uses the pyproj package to do the coordinate conversion:
This snippet uses a Sentinel 2 band with a different CRS than yours, but it should work the same way. A few things to note:
Guillaume Lostis


j.carnes2553@...
Guillaume, thanks for the swift reply, this sounds exactly like what I'm looking for. I will work on implementing it into my code now, thank again :)

