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[mkgmap-dev] Shifted map when supplying poly bbox to splitter

From Joris Bo jorisbo at hotmail.com on Thu Dec 13 16:12:47 GMT 2018


When using a poly file with a bbox for splitter on 'small areas' the resulting map is shifted / not complete.
I assume it uses some rounding algoritm to redefine the coordinates specified.
Could somebody explain me how to predict this behaviour.
When starting from a center point : how many degrees  should it minimum be extended to left, right, up and down ?
Or maybe I do something wrong with the poly file.

Kind regards

Here is an example where I specified a small bbox around a city centre.
After supplying this to splitter in this case it only returns approximately the left/down quarter and the centre point is not included
[cid:image001.jpg at 01D49307.0FB4AC60]
Supplied poly to splitter

Splitter areas.polys result file

JBM - Temp
   5.01   52.02
   5.01   52.09
   5.11   52.09
   5.11   52.02
   5.01   52.02 (tested both with and without this line)

  5.010002  52.020006
  5.010002  52.090001
  5.109994  52.090001
  5.109994  52.020006
  5.010002  52.020006

[cid:image002.jpg at 01D49307.0FB4AC60]

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