Thread: Creating smaller IMG map in order to fit 512MB datacard

New to this amazing forum and looking for some quick guidance to ensure I am on the right track. I have read a lot of posts and come some way so far. I have searched the forum but couldn't find an answer to this.

I have a large Bluechart g2 map (1.8GB) which I would like to trim to a smaller area in order to reduce the file size to less than 512MB (I have to use a Garmin proprietary datacard).

I am trying to do this by limiting the area in GMaptool and then I hope to create a single smaller img file.

It seems that the Split Area Limit options are only available when creating files to mapsource and the output I get is several img files and a very small mapset.img.

The next step is then join these using GMaptool and then check if the resulting img is small enough and covers the area I need.

In my case I don't see any need for using mapsource (I am using Homeport) so it's unfortunate that Gmaptool can output a single img split by area.

I am using the right approach or do I need to do something else?


Thanks!