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Mapsend Topo-Lacking detail, or am I missing something?


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I have a Map 330, and have Mapsend Topo. I thought the Topo would be useful to avoid problems I have had while caching where I end up on the wrond side of a chasm. I brought up one of the places where I previously got stuck (here it is on topozone):

http://www.topozone.com/map.asp?u=1&lat=42.66813&mapit=Map+It&lon=-77.33477&size=s&s=25

Where topozone shows a huge deep gully, Mapsend shows a smooth hill, with a blue line for a creek. Is there a setting to turn the detail up?

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A USGS 'quad' is generally 1:24000. The Garmin and Magellan downloadable maps are generally 1:100000 (less than 1/4 the detail).

 

The detail is pretty disappointing. That said, a USGS quad can still leave you in a lurch. 30' cliffs are sometimes invisible with 40' elevation lines... icon_wink.gif

 

-jjf

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A USGS 'quad' is generally 1:24000. The Garmin and Magellan downloadable maps are generally 1:100000 (less than 1/4 the detail).

 

The detail is pretty disappointing. That said, a USGS quad can still leave you in a lurch. 30' cliffs are sometimes invisible with 40' elevation lines... icon_wink.gif

 

-jjf

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quote:
Originally posted by jfitzpat:

A USGS 'quad' is generally 1:24000. The Garmin and Magellan downloadable maps are generally 1:100000 (less than 1/4 the detail).

 

icon_wink.gif

 

-jjf


 

Wouldn't the detail be closer to the square of 4 or 16 times since we're talking about area? All I know is that my NG Topo for the Northeast uses 10 CD's. Allowing a few of those for 100000 and other scales, tha leaves a lot of storage for quads. Mapsource Topo uses only 3 CD's for all 50 states.

 

Alan

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quote:
Originally posted by jfitzpat:

A USGS 'quad' is generally 1:24000. The Garmin and Magellan downloadable maps are generally 1:100000 (less than 1/4 the detail).

 

icon_wink.gif

 

-jjf


 

Wouldn't the detail be closer to the square of 4 or 16 times since we're talking about area? All I know is that my NG Topo for the Northeast uses 10 CD's. Allowing a few of those for 100000 and other scales, tha leaves a lot of storage for quads. Mapsource Topo uses only 3 CD's for all 50 states.

 

Alan

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quote:
Originally posted by Alan2:

Wouldn't the detail be closer to the square of 4 or 16 times since we're talking about area? All I know is that my NG Topo for the Northeast uses 10 CD's. Allowing a few of those for 100000 and other scales, tha leaves a lot of storage for quads. Mapsource Topo uses only 3 CD's for all 50 states.

 

Alan


 

I don't have as much experience with the Magellan topos, but the MapSource CDs seem to contain more detail around some areas (IE, the elevation lines are not consistantly spaced). But, what I meant was that, at best, you have 1/4 the detail. In some spots, it seems much, much worse than even the old printed 1:100000 maps.

 

-jjf

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