USA/Mexico/Canada/Sweden Topographic imagery has a misplaced sectional in Maine

[tmerc58]

The USA/Mexico/Canada/Sweden Topographic imagery has a misplaced sectional. The displayed map sectional centered at [N47.295, W68.193] is actually from [N46.296, W68.196] - that is, 10 degrees southwards.

At this latter location, topographic imagery is not displayed, with instead a poor resolution black and white satellite image.

This can be confirmed by consulting the USGS National Map (​https://apps.nationalmap.gov/viewer/). I have also attached image files showing the mismatched and missing sectionals.

Relative:URL: ^/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2024-04-09 18:11:42 +0200 (Tue, 09 Apr 2024)
Revision:19039
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[taylor.smock]

That imagery layer is provided by caltopo.com. Please use the contact methods on their ​site.

We do not control any imagery layer, and we are not responsible for what an imagery provider shows.

I get why you reported here first ("there must be a bug in their code"), but it is (in this case) just a problem with the source. Here is a link to one of the tiles: ​https://caltopo.s3.amazonaws.com/topo/15/10171/11478.png . As you can see (if you look at the tile), we have the Canadian source, and then a good US source, and a bad US source in that single tile.

In this case, I think caltopo would like to know that they have some areas that need to be fixed.

In the future, if you want to check and see if it is a problem in JOSM or if it is something that the imagery provider will need to fix, you can right-click in the mapview then select Show tile info.