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opentopomap for Canada exceeds 4GB
Posted: Tue Apr 05, 2022 5:41 pm
by Grispoil61
Hello group,
I have been using the maps found here for a while now:
The latest release (2022-04-02) for the Canada map exceeds 4GB in size and cannot be copied over to a 32GB FAT32 formatted micro SD-Card.
I require a FAT32 formatted SD card because I am using an Oregon 600 device from Garmin.
Is there a way to easily split the map, the .img file obtained from garmin.opentopomap.org, in 2 or more parts?
Thanks
Yvan
Re: opentopomap for Canada exceeds 4GB
Posted: Wed Apr 06, 2022 1:30 am
by GPSrChive
We are currently downloading the available Canada map from the link provided, which indicates the total file size will only be 3.6 GB.
Which map did you download?
Re: opentopomap for Canada exceeds 4GB
Posted: Wed Apr 06, 2022 2:31 am
by Grispoil61
gpsrchive wrote: ↑Wed Apr 06, 2022 1:30 am
We are currently downloading the available Canada map from the link provided, which indicates the total file size will only be 3.6 GB.
OSM Canada Size.png
Which map did you download?
Yes, I have noticed that too, the text says 3.6G, however, once downloaded and unzipped, it's over 4G in size:
Yvan
Re: opentopomap for Canada exceeds 4GB
Posted: Wed Apr 06, 2022 5:02 am
by GPSrChive
Indeed, the unzipped map is too large for FAT32, an oversight by the map author!
We are researching possible solutions now....
Re: opentopomap for Canada exceeds 4GB
Posted: Thu Apr 07, 2022 1:57 am
by Grispoil61
I have reported the problem here:
however, I am not sure if that site is monitored.
If you can come up with a possible solution, it would be great.
Thanks
Re: opentopomap for Canada exceeds 4GB
Posted: Thu Apr 07, 2022 2:53 am
by GPSrChive
That is exactly what I was going to suggest, as the map author needs to correct the issue regardless.
Thus far, I have only found some software that will disassemble the full map into all of the individual segments it consists of (in this case, 349), which is of little help. Then you could compile smaller maps using combinations of those segments, which is a very tedious process, especially since you would first have to determine which segments bordered each other.
May I suggest you visit
GPSrChive > How To... > Maps to find a suitable temporary replacement option.
Re: opentopomap for Canada exceeds 4GB
Posted: Thu Apr 07, 2022 8:39 pm
by KiwiGPS
Why not just use MapSource or BaseCamp to select 2 sections and have them make the 2 parts? If you need all of Canada on the device at the same time, perhaps fill the card with as much as you can and put the remaining bit into the internal memory.
I assume there's a MapSource / BaseCamp installer in your zipped file? Hence the above suggestion. If not, get the installer file from
Re: opentopomap for Canada exceeds 4GB
Posted: Fri Apr 08, 2022 4:18 am
by GPSrChive
No BaseCamp installer was provided.
Re: opentopomap for Canada exceeds 4GB
Posted: Fri Apr 08, 2022 11:59 am
by asprin624
You could use this one:
canada_gmapsupp.img
Size: 1387 MB
Build: 08.04.2022
found here:
Or you can always use:
GMapTool and cgpsmapper to make an install for any IMG file you have.
The tools to do that below
and
Re: opentopomap for Canada exceeds 4GB
Posted: Thu Apr 14, 2022 3:31 am
by Grispoil61
asprin624 wrote: ↑Fri Apr 08, 2022 11:59 am
You could use this one:
canada_gmapsupp.img
Size: 1387 MB
Build: 08.04.2022
found here:
Or you can always use:
GMapTool and cgpsmapper to make an install for any IMG file you have.
The tools to do that below
and
I tried using GMapTool and cgpsmapper to split the .img file with the option Create for Mapsource and then I installed it. The result in Basecamp, however, was simply horrible and the map was not useable.
So, for the time being, I will be using the previous version of the map, it was below 4GB. I will switch to another map provider if I feel a need for it.
Thanks for your time.