Downloading high res maps

Ken Demarest shared this question 6 months ago
Answered

I must be an idiot, but I just can't figure out how to find high res maps in the Locus Store. I have successfully downloaded the Lo Map for Mexico. Now I want higher resolution in Muzquiz in Coahuila Mexico. I can't find anything like that in the Locus Store. Am I supposed to go get a map from... what, another vendor? I'm just SO new at this...

Comments (5)

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First, make sure the Map Theme is set to "City".


LoMaps are derived from OpenStreetMap (OSM). If the details you expect to see are not present, it may be because they have not been added to OSM. For example, here is Plaza Muzquiz in OSM:

https://www.openstreetmap.org/node/761127662#map=19/27.87825/-101.51584


If it looks similar to what you see in the LoMap then whatever details you may be looking for have not been added to OSM. For example, I see most of the streets don't have names. Therefore OSM's map editors (predominately volunteers from the general public ... like me) have not spent much time updating this location.

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Thanks Taras. I should have been more clear that I will be exploring for new caves in the wilderness. So I'm looking for more detail in the Coahuila countryside. Topo, or satellite. Is that possible? (Thanks again for your response!)

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That sounds exciting! I imagine aerial/satellite imagery and topographic maps would be better suited for your needs.


Locus Map can definitely display satellite and topo maps but the question is what are good sources of this information for the Coahuila area?


I'm unfamiliar with mapping resources for Mexico so the first place I'd turn to (you already know where I'm going) is Bing and Google. For example, here's the same spot (at high magnification) in Bing and Google:

Both of these maps can be viewed in Locus Map although I don't believe Google is included by default because their terms of use disallow downloading of its maps and the Locus team complies with their terms. Having said that, end-users have added it via Locus Map's custom maps feature. Basically, almost any online map that is rendered by a tile-server (most are) are accessible (you need the URL to the tile-server). Anyway, I'm getting ahead of myself, first we need to confirm if either of these maps are of any use to you.


BTW, Locus Map also lets you overlay one map onto another and adjust the map's transparency. This is handy when, for example, you'd like to see contour lines drawn on top of a satellite image.

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Dear Ken,

Taras already posted excellent answer. Unfortuantely the most detailed map we can offer for Mexico is mentioned LoMaps map. You can also use any online maps from section Maps > Online > Outdoor, but these maps are also created from OSM data and the result will be very similar.

However I quickly search for other sources and INEGI (Mexico National mapping agency) publish interesting DRG Topo maps in 1:50 000 and 1:250 000 scale. It seems that map can be downloaded for free as geotiff file. Locus doesn't support geotiff natively but there are two possibilities (mapc2mapc and qgis) how to convert geotiff to Locus sqlitedb format. Please see:

http://www.beta.inegi.org.mx/app/mapas/

http://www.the-thorns.org.uk/mapping/help/locus.html

http://docs.locusmap.eu/doku.php?id=manual:advanced:map_tools:conversion

Thank you

BR Petr

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You probably figured this out already, but if you're interested in the mountains, select the Hike & Bike theme (or a similar 3rd-party choice) instead of City. LoMaps data does include contour lines, but the City theme doesn't show them.

Also, have you downloaded elevation data (available in Locus Store alongside the maps) and turned on slope shading?