Splitting POI files by state
Wed, 12/27/2006 - 3:13am
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17 years
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I'm awaiting my Nuvi 660 to arrive. This will be my third GPS. First a Garmin II+, then a Garmin Vista, now the Nuvi. I'm used to waypoints, but I'm just setting up my POI files. I've downloaded several large POI files like beaches.zip. Is there an easy way to split out sections by state, or do most folks load the entire file? Seems like loading needless overhead might slow things down. My old waypoint files aren't nearly so large.
tnx..
large files / 660
Large files do seem to slow the nuvi 660 (more so than other Garmin models). It seems to work fine with a few thousand POIs but gets a little slow when you load a couple hundred thousand.
More info in this discussion thread: http://www.poi-factory.com/node/66
I don't think it will have any problems with Beaches.csv. I'd go ahead and load the whole thing.
JM
It's hard to figure out
It's hard to figure out what's in what state after the fact.
If the creator of the POI wanted it to be parseable later s/he could prepend the fourth column with the state abbreviation, which would facilitate either programatic extraction or manual sorting in Excel or whatever.
lat,long,"name","WY some description here"
Normal people would throw it into Excel and sort on that 4th column, and export out the rows for the state[s] they want. Unix geeks would likely grep for the rows they wanted.
US-only CoPilot + android Optimus T = cheap, effective nav http://www.mousetrap.net/mouse/gps/
If you don't really want to
If you don't really want to select by political boundaries (ie, states) you can select all points within a given distance of a starting point. 100 miles around your house, for example.
http://www.gpsbabel.org/htmldoc-1.3.2/filter_radius.html
US-only CoPilot + android Optimus T = cheap, effective nav http://www.mousetrap.net/mouse/gps/
I like that solution. At
I like that solution. At least I know I don't have to load stuff I almost won't use in the near future.