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General Category => Map Making Support => Topic started by: savage on January 10, 2009, 04:06:28 PM

Title: Global Mapper: Unknown error exporting Polish MP file
Post by: savage on January 10, 2009, 04:06:28 PM
Any ideas on what could cause that error? I am trying to build a combined map (MA/VT/NH) and I get those errors in the middle of the map. I am missing 4 or 5 rectangles. All the other MP files seem good.
Title: Re: Global Mapper: Unknown error exporting Polish MP file
Post by: -Oz- on January 10, 2009, 07:50:15 PM
It actually says "Unkown error"?
Title: Re: Global Mapper: Unknown error exporting Polish MP file
Post by: savage on January 10, 2009, 07:57:05 PM
Yes it says Unknown. I am trying to see if I can find something. Talk about a needle in a hay stack!

My rectangles are numbered:

A1 .. A5
...
I1 .. I5

And I get an error on:

  D2
E1 E2 E3
F1 F2 F3
  G2

All the other rectangles appear to be ok.
Title: Re: Global Mapper: Unknown error exporting Polish MP file
Post by: -Oz- on January 10, 2009, 09:59:14 PM
That reall is the worst error message ever.

What is the same throughout those that isn't the same in any of the others?
Title: Re: Global Mapper: Unknown error exporting Polish MP file
Post by: savage on January 11, 2009, 02:16:50 PM
I think the "Unknown error" might be a "not enough memory" type of error. I am now trying a different process:

- I am combining all the files except the elevation files to generate intermediate .MP files. This process seems to work OK. I have now generated the MP files where before I got my 'Unknown error'. So we know the "Unknown error" is not because of bizarre data in the GNIS/Transportation/etc files.

- When this is done I will combine the .MP files above with the elevation data to generate the final MP files.

This process will use less memory because when I bring in the elevation data (already split in smaller rectangles) I won't have in memory all the GNIS/Transportation/Water/etc files already loaded.

From what I can see, it looks like GM loads only the files it needs.

Stay tuned...
Title: Re: Global Mapper: Unknown error exporting Polish MP file
Post by: aussieskier on January 12, 2009, 05:35:18 PM
I think the "Unknown error" might be a "not enough memory" type of error. I am now trying a different process:

- I am combining all the files except the elevation files to generate intermediate .MP files. This process seems to work OK. I have now generated the MP files where before I got my 'Unknown error'. So we know the "Unknown error" is not because of bizarre data in the GNIS/Transportation/etc files.

- When this is done I will combine the .MP files above with the elevation data to generate the final MP files.

This process will use less memory because when I bring in the elevation data (already split in smaller rectangles) I won't have in memory all the GNIS/Transportation/Water/etc files already loaded.

From what I can see, it looks like GM loads only the files it needs.

Stay tuned...

I took a look around the GM forum and it would appear that most likely that is a memory. I think it tops out at 2gigs in 32bit windows but can use up to 4 gigs in 64bit.

Perhaps look at the coordinates of the pieces missing and and export them from GM via lat/lon bounds to those coordinates?
Title: Re: Global Mapper: Unknown error exporting Polish MP file
Post by: -Oz- on January 12, 2009, 06:33:28 PM
It definitely dies at 2gb for me.

I do it exactly like that now.

I use DOS to combine the new, with the copy binary tag.  It has never failed me yet.

I only put the dictionary header in the one with all the elements (gnis, roads, etc) and then I have a blank header made up (with nothing) that I put in the one with the topo.