[mkgmap-dev] Commit: r3353: Improve ConvertFilter.

Thu Nov 20 23:13:20 GMT 2014

Version mkgmap-r3353 was committed by steve on Thu, 20 Nov 2014

Improve ConvertFilter.

The patch allows for length conversions between m, km, mi, ft and
speed conversions of km/h (kmh, kmph), mph, knots. New ones can easily
be added.

It will also take into account any unit that already exists.

So for example if you have ${val|m=>ft}

Then val will be assumed to be in meters if there is no unit.

  val=10   --> 33

if a unit is given, then it converts from that, so if already in feet
the value will be unchanged.

  val=10ft --> 10
  val=10km --> 32,808

If it can't work out what to do then the value is unchanged. 

http://www.mkgmap.org.uk/pipermail/mkgmap-dev/2014q4/021995.html