[Qgis-user] QGIS3 location error

[Adam Dershowitz]

I have a project that I created and have worked with in QGIS2.  I just tried it in QGIS3, and one of the layers is showing in the wrong location.  In both cases they show a CRS definition of "+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs"
After doing some testing, and creating a new project, it seems that there is a single layer that is offset in QGIS3, from the correct location, by about 500m West and about 20,000m North.  

The layer is a JP2 imagery layer, that I downloaded from this link:
https://www.sciencebase.gov/catalog/item/58281f9fe4b01fad870f045f <https://www.sciencebase.gov/catalog/item/58281f9fe4b01fad870f045f>

And, here is the information about it:
https://www.sciencebase.gov/catalog/file/get/58281f9fe4b01fad870f045f?f=__disk__76%2F45%2F79%2F7645799634b35663c92271129192d7ff9c4204e0&transform=1&allowOpen=true <https://www.sciencebase.gov/catalog/file/get/58281f9fe4b01fad870f045f?f=__disk__76/45/79/7645799634b35663c92271129192d7ff9c4204e0&transform=1&allowOpen=true>


As one example, if I use an NAD83 CRS, it shows up as being from approximately 36.12deg N to about 36.18deg N.  But, according to the link above, the actual bounding coordinates should be 35.9375 to 36.0000.  

Any idea why this won’t show up in the correct location, or what I can do about it?  

I’m using qgis 3.0.0_1 on a Mac that I installed using Macports.

Thanks,


--Adam



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