[mkgmap-dev] remove splitter option align-for-dem again or change mkgmap?

Fri Jan 26 07:16:08 GMT 2018

Hi all,

with current code in mkgmap this option is of no use, as mkgmap rounds the dem-dist values (down) to multiples of 16.
(9942 -> 9936 , 3314 ->3312)
This means that points are always interpolated, no matter where the tile boundaries are.

So, I see two possibilites:
1) remove the option from splitter (it is not yet documented anyway)
2) change the code in mkgmap to allow using the exact dem-dist values without rounding
I think this works fine with MapSource and Basecamp, but maybe some devices will not be able to handle that,
as Garmin maps always use the rounded values. 
A possible benefit of the exact values is that we may be able to avoid interpolation, at least in some areas of the world.

What do you think?

Gerd