Basic Map shows above OSM Map

When I load an osm map from an USB stick, it shows every detail in basecamp, but as a layer above this map, the basic map is shown also. So I see as example the same autoroute twice, first with curves as they are in the OSM layout and second as simplified straight line from the basic map.
When I show "Ansicht/Karte-Produkt" the global map is mentioned but not ticked, but the OSM Map is ticket as it should be.
This happens on two computers, one with vista, the other with windows 7 /64 bit.
How can I switch out the Basic map when I look to another map?? Or is it possible to deinstall the basic map from the computer and to work only with maps from an USB stick?

0 Former Member over 14 years ago

BaseCamp can currently only display one map at a time, so I am not sure what is going here.

Are you sure it's BaseCamp's global map you are seeing along with the OSM map, and not the OSM maps's base map?

BaseCamp will not start if you have no maps installed, so I wouldn't recommend removing BaseCamp's global map.

0 Former Member over 14 years ago

This is probably a better question to ask on the OSM forum. http://forum.openstreetmap.org/index.php

FWIW I had a similar problem with BaseCamp using transparent or semitransparent maps I made with cgpsmapper. It was my map's background I was seeing. Try hitting cntrl-G. That should clear the video for the top level map. cntrl-G again should re-draw it. Also, see if the same problem occurs in MapSource. In my case, it didn't.

Just checked to see if the problem still occurred. Can't see it now, so I guess it's specific to an earlier BaseCamp version. Are you using the latest BaseCamp?

0 german_opa over 14 years ago

Thanks to both of you for your answers.
Obviously Falagar is right: As a beginner in basecamp as well as in OSM I did not know, that the OSM Maps have own base maps: But the following tests show this: I have 2 different OSM Maps from different sources loaded on an USB Stick and show them in Basecamp..Then, in each of this Maps, I pressed Ctrl G, which means Base Map only ( In German: Nur Basiskarte). I combined this maps together with its basemaps and attach them here.
A1 shows the area reasonable, only a black line is not correct. A2 is unreasonable, a part of the village is under water, obviously the coast line has been copied from the coastline in the base map and the Autoroute also is at a place where there is in reality no autoroute.
I have basecamp 3.2.2 in German, Map source I dont have.
To look to a OSM Forum is a good tip, but I have until now no knowledge of this forum and they certainly want to know, where this two maps are from. So this may need some time more.

0 german_opa over 14 years ago

Sorry, A1 Upload failed. I hope it gets through now.

0 Former Member over 14 years ago

This is not a BaseCamp problem. You should take this up with your map providers.

0 german_opa over 14 years ago

This is not a BaseCamp problem. You should take this up with your map providers.

You gave me the link to the OSM Forum already, I followed this advice and found out, that it is there a known issue. So, in principle you are right. But not completely: It is a fact, that the maps which have in basecamp this overlay problem, are displayed in the handheld oregon 450 itself without this problem. So Garmin has an algorithm who avoids this problem. But I understand, that they don't put very much effort to solve problems with the maps of their competitors.

0 Former Member over 14 years ago

You gave me the link to the OSM Forum already, I followed this advice and found out, that it is there a known issue. So, in principle you are right. But not completely: It is a fact, that the maps which have in basecamp this overlay problem, are displayed in the handheld oregon 450 itself without this problem. So Garmin has an algorithm who avoids this problem. But I understand, that they don't put very much effort to solve problems with the maps of their competitors.

Either that, or your map providers should try to more effectively comply with Garmin's standard. From the looks of the images you attached, the maps had problems with background polygons and coastline flooding. Both of those are known issues with some versions of OSM compilers, but those issues need to be addressed by the map makers, not the software used to display the map.

If you have a PC and BaseCamp up and running you should be able to download a MapSource upgrade and have it install correctly. You could then see if the problem occurs in both viewers or if it's specific to BaseCamp.

0 german_opa over 14 years ago

The following message appeared in the OSM Forum:
"The bug of Basecamps Base map superposes the OSM map has just been traced and solved by developer Steve from mkgmap, so sooner or later the results will be visible in all the OSM maps that are produced with mkgmap."