[mkgmap-dev] Line TYP Collision between two different maps

Wed Feb 21 18:49:00 GMT 2018

Hi Scott

Interesting observations on how Garmin selects the TYP file to use,
and I think you have come to the correct conclusion that this this
happens when family/product id's are the same.

> Another thought I had is that since both my maps share the same family 
> id and product id, could this be causing the collision?  I cannot find 
> any decent documentation on what family id and product ID are supposed 
> to be.

The TYP file contains a family and product id, if you have two maps they
would normally have different family ids and the TYP with the matching 
family id would be used.

I don't think I have ever tried different product ids, but that may be 
another way of selecting the product id.

If you are creating the TYP with mkgmap, then the --family-id and 
--product-id options will also affect the TYP file.

Steve