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openstreetmap / operations

OSMF Operations Working Group issue tracking
https://operations.osmfoundation.org/
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Clarification Needed on EPSG:3857 Coordinate Conversion in Slippy Map Wiki #1121

Closed moong23 closed 4 months ago

moong23 commented 4 months ago

Is this the right place to ask about the Wiki? (Sorry if not 😢, please feel free to close this issue if it's not appropriate.)

I need to get the tile for the coordinates I have in EPSG:4326 format. So, I tried to transform the coordinates into EPSG:3857 format according to the Slippy Map Wiki.

Following the example provided, I used proj4 instead of manually coding the mathematical expressions.

However, the wiki states that the x and y values are in EPSG:3857 format, but the values seem very different from what I found using this calculator.

So, my question is: Are the x_EPSG:3857 and y_EPSG:3857 values on the wiki really in EPSG:3857 format? If not, what format are the x and y values in?

tomhughes commented 4 months ago

No it is not the correct place to ask - this tracker is used by the operations team to track operational issues running the servers and is not a general support forum.

Please use https://community.openstreetmap.org/help to ask your question.