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I do not remember. I think I used dem2topo. I know I had all sorts of problems in the southern part of the state.

I had a lot of problem with the contours and Global Mapper. In fact I could not use GM to finish the map, it would hang in some area so I switch to another tool.
I will double check my contours and try to regenerate them. The Northern part of the state should be OK because it is where I use GM.

Don't know! I will investigate that in the next few days. I used the map in the northern part of the state and everything looked reasonably good but there might be something wrong in the process.

Could you give an example where you think the map is wrong?

NH is almost done. I just have to double check everything (make sure I did not forget a layer) and package it. I may try to work on it this week-end.

All the data comes from government sites. It would be interesting to see if the Garmin maps or other topo maps have the same bugs. Maybe they use other source of information to produce their map.

I have only use the MA maps around where I live and so far it is good. I will travel to ME soon and I will see how it goes.

-Oz- you might want to add to my comments as you know more than I do:

Two initial questions. Is there an advantage/disadvantage to having both your topo maps and my Garmin City Navigator maps loaded and turned on at the same time for the same geographic area? Do your maps show the same info as the City Navigator maps plus topographic information?

I do not have City Navigator and I do not know what type of information they provide. The map coming with my CSx unit were useless!

If I want to add or modify the MA topo maps, say adding trails or text notes, is this possible using the section "How To Create Garmin Topo Maps" elsewhere on this site? If the answer is yes, do you still have to go through all of the steps involved in the creation of a new map?

I suppose you could create a transparent map to overlay on top of this map. You are not going to be able to recreate a complete set like I did without the intermediate files that I already built. If you have good trails data (official stuff) then I will include them in a future release.

I am glad it is useful. I also have ME, and will have NH soon. I monitor this forum and will try to answer your questions promptly.

There was no specific error message, just internal error or something similar.

I realize I did not clearly answer your question.

What I did is to generate 2 sets of contours, one for the North and one for the South.
I did not change anything for the other data (water, transportation, gnis, etc).
I generated the .MP files in 2 runs. One run with the North elevations and one run with the South elevations.
Everything else is the same.

The cut between North and South is at 45 degree latitude. For the North I used Global Mapper for the contours but I use your tool for the South side. For some reasons Global Mapper could not process the South side (internal error of some sort).

I think the problems were with the contours. I switched to the TIFF files for the South part of the map and was able to do it with all the problems I reported in other messages. ME was hard to do. I think it is easier to do it in multiple parts and combine at the end of the process.

First release of the Maine topo map is available here

First release of the map. Includes:

    * Contour lines (50' interval)
    * Street names, rail roads
    * Lakes, ponds and streams
    * Federal lands
    * State and counties border
    * Apalachian trail

This might be a quadrant falling outside the state with nothing in it?

I am running into some difficulties. Some of my .MP files for Maine are not good:

Importing and preprocessing data
Current import datum is: W84 :WGS 84 Global Definition II
Reading [DICTIONARY]
Codepage set to: 1252
String coding: 6 bits
POI info sorting
Layer >>>>>>0<<<<<< generation
Error E032: Layer 0 of the map cannot be empty.

cgpsmapper waits until you press OK to go to the next file.

Works better but your installer comes with your settings and overrides mine.  You should fix that or people will get really confused.
I will try to finish ME in the next couple of days.