[mkgmap-dev] MKGMAP lost precision.

Thu Jan 9 07:47:45 GMT 2020

Hi John,

please use r4406 or later, see also
http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=4405
http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=4406

Should have seen this problem before, seems I looked only at routing / search issues before committing r4360 :(

Gerd
________________________________________
Von: Gerd Petermann <gpetermann_muenchen at hotmail.com>
Gesendet: Mittwoch, 8. Januar 2020 18:56
An: john at the-thorns.org.uk
Betreff: AW: MKGMAP lost precision.

Hi John,

thanks for reporting. I can reproduce the error but I do not yet see where it is.
Looks like mkgmap is dropping on point in each shape. Will have a closer look tomorrow.

Gerd

________________________________________
Von: John Thorn <johnrthorn at gmail.com>
Gesendet: Mittwoch, 8. Januar 2020 18:04
An: Gerd Petermann
Betreff: MKGMAP lost precision.

Hi Gerd,

I decided it was time to install a more recent version of MKGMAP. I have been running 4286 but downloaded 4398.

My maps contain the Microsoft/Bing building outlines for the US so I am using Level0=24.

With 4286 the result is good (screenshot 704) with 4398 the rectangles have become triangles as if precision is being lost (705).

I am compiling from .MP files and a typical building is :

[POLYGON]
;   RhodeIsland.geojson 161666
EndLevel=3
Type=0x13
Data0=(41.682688,-71.277508),(41.682688,-71.277476),(41.682596,-71.277476),(41.682596,-71.277366),(41.682748,-71.277366),(41.682748,-71.277508),(41.682688,-71.277508)
[END]

Regards,

John