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Etrax Legend Realistic Map Capacity


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I just picked up a Legend and im debating which Mapsource cd to get.. from what I can tell metroguide and city select are the same save for the autorouting which the legend doesnt support.

 

My question is how many maps (sections?) does 8meg hold? In my case I live in Long Islans NY so id like to get the majority of the island and maybe NYC so I can start finding some caches.

 

Thanks

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The following info is based on older version 5 MetroGuide maps. Version 6 is now current but 7 is expected to be released sometime this summer. I would expect the newer versions to contain a little more data than the older version. Still, it should give you a pretty good idea of what you're dealing with.

 

The Legend's 8MB is a little bit lean for MetroGuide maps in the big city. The 8MB will hold the eastern 2/3 of Long Island - OR - the western 1/3 of Long Island. The closer to Manhattan, the higher the population density and thus the more map memory is eaten up by Points of Interest (POI) data.

 

The way Manhattan itself is divided up into 4 sections, you will only get 2 of those sections into the Legend at any given time.

 

It's disappointing, but the MetroGuide maps really are great in providing address lookup capability as well as searching for various businesses and attractions.

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From responses I've read in newsgroups, it is possible to cram more map info into the Legend if you are willing to live without certain types of POI's. If you use Google Groups to search for the thread "US model Etrex Legend in Euro Backpacking trip", you'll find some comments about the methods. Here are some of the tips from the thread---

 

From one post:---

| >| I've played around with uploading to the Legend with sendmap20, which

| >| drops a lot of proprietary data when uploading. I can get twice the

| >| maps into the legend that way, with no loss of useful data *to me*.

| >|

| >| sendmap20 is part of the cgpsmapper thingy.

 

In response to the above, Jean wrote---

>>> What data do you lose when loading the Legend with sendmap20? Can you

>>> selectively delete classes of POI (eg, delete restaurants but leave

>>> service stations in) ?

 

and jc replied---

>>There is no automagic way to select what gets deleted, but if no one

>>else does it I'll proly write a perl script that parses .mp files to

>>rip out stuff the user specifies. Then recompile to .img with

>>cgpsmapper and upload.

 

then Keith Sheppard stated---

Actually there is a way with a bit of extra software (watch out, there's a

plug coming because I happen to be the author of such a package).

 

Once you have used cgpsmapper to "reverse compile" your map into a .mp file,

you can then load that into a mapping application. Let's see if I can think

of one... I know, how about my MapMan (free download from

http://homepages.tesco.net/~Keith.Sheppard/MapMan.htm).

 

Having loaded your map into MapMan, click on the Edit menu and choose "Map

Item". You will be shown a scrollable list of all items in your map. There

are various tools to select map items by type and/or string match and you

can then delete selected items.

 

Having got rid of the dross, click on the Export menu and choose "Digital

Map". Your pruned map will then be exported to a new .mp file and,

optionally, recompiled.

 

>>I can't tell what's missing; I had heard it was phone numbers and

>>addresses of POIs, etc, but I haven't looked because I don't look at

>>POI stuff much.

 

I think it depends what version of cGPSMapper you are using. I seem to

recall that the freeware version discards all the autorouting data and

address details - which include the phone and address details you mentioned.

 

 

I haven't tried any of the above method(s), but it seems like a worthwhile thing to test out.

 

Hi-Ho Silver

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If you use the garmin mapsourse products;

City Select = a small portion of Long Island into the 8mg, about 1/4 of it.

Topo = all of long Island and a nice chunk of NY.

 

City Select has street addresses, gas stations, resturants, shopping and lots of other POIs. You cannont select which ones you want to download and which ones you don't

 

Topo - doesn't have side street names. You can't search by address and about the only POI data you get are schools, cemetaries, and a few others.

 

It's the POI data that takes up all the memory and with mapsource there isn't an option not to download them.

 

Maybe this will help:

Brooklyn, New York City Select North America v6.0 3.12 MB

Flushing, New York City Select North America v6.0 599 KB

Rockaway Park, New York City Select North America v6.0 630 KB

Levittown, New York City Select North America v6.0 2.06 MB

Glen Cove, New York City Select North America v6.0 1.30 MB

Commack, New York City Select North America v6.0 1.07 MB

Lindenhurst, New York City Select North America v6.0 1.01 MB

Sayville, New York City Select North America v6.0 264 KB

Centereach, New York City Select North America v6.0 1.24 MB

Shirley, New York City Select North America v6.0 1.23 MB

Total 15.7mb

 

LONG ISLAND WEST, NY-NJ-CT (WEST - NW) Topomap 398 KB

LONG ISLAND WEST, NY-NJ-CT (WEST - SW) Topomap 277 KB

LONG ISLAND WEST, NY-NJ-CT (WEST - SE) Topomap 259 KB

LONG ISLAND WEST, NY-NJ-CT (WEST - NE) Topomap 250 KB

LONG ISLAND WEST, NY-NJ-CT (NORTHEAST) Topomap 429 KB

LONG ISLAND WEST, NY-NJ-CT (SOUTHEAST) Topomap 239 KB

LONG ISLAND EAST, NY (WEST) Topomap 309 KB

NEW HAVEN, CT-NY (SOUTHEAST) Topomap 78 KB

NEW HAVEN, CT-NY (SOUTHWEST) Topomap 19 KB

NEWARK, NJ-NY (EAST - SE) Topomap 280 KB

NEWARK, NJ-NY (EAST - NE) Topomap 343 KB

NEWARK, NJ-NY (EAST - NW) Topomap 217 KB

NEWARK, NJ-NY (EAST - SW) Topomap 276 KB

MIDDLETOWN, NY-NJ-PA (SOUTHEAST) Topomap 368 KB

BRIDGEPORT, CT-NY-NJ (WEST - SW) Topomap 235 KB

BRIDGEPORT, CT-NY-NJ (WEST - SE) Topomap 231 KB

BRIDGEPORT, CT-NY-NJ (EAST - NW) Topomap 199 KB

BRIDGEPORT, CT-NY-NJ (EAST - SW) Topomap 205 KB

BRIDGEPORT, CT-NY-NJ (WEST - NE) Topomap 191 KB

BRIDGEPORT, CT-NY-NJ (WEST - NW) Topomap 218 KB

MIDDLETOWN, NY-NJ-PA (NORTHEAST) Topomap 270 KB

MIDDLETOWN, NY-NJ-PA (NORTHWEST) Topomap 236 KB

MIDDLETOWN, NY-NJ-PA (SOUTHWEST) Topomap 266 KB

NEWARK, NJ-NY (NORTHWEST) Topomap 318 KB

NEWARK, NJ-NY (SOUTHWEST) Topomap 298 KB

TRENTON, NJ-PA-NY (EAST - NE) Topomap 220 KB

TRENTON, NJ-PA-NY (EAST - NW) Topomap 199 KB

TRENTON, NJ-PA-NY (WEST - NE) Topomap 163 KB

TRENTON, NJ-PA-NY (WEST - NW) Topomap 188 KB

BRIDGEPORT, CT-NY-NJ (EAST - NE) Topomap 196 KB

WATERBURY, CT-NY (SOUTHEAST) Topomap 344 KB

WATERBURY, CT-NY (SOUTHWEST) Topomap 303 KB

total=7.93mb

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