To Christian Gawron
Thank you for your tip. I will try to use it for the next release of
my map.
David
> Hi Daniel,
>
> you can use regular expressions to filter contour lines by elevation
> - here is what I do in my style file:
>
> # Contours take their name from the elevation setting.
> # multiples of 200m
> contour=elevation & ele ~ '\d*[02468]00'
> { name '${ele|conv:m=>ft}'; }
> [0x22 resolution 18]
> # multiples of 50m
> contour=elevation & ele ~ '\d+[05]0'
> { name '${ele|conv:m=>ft}'; }
> [0x21 resolution 21]
> contour=elevation
> { name '${ele|conv:m=>ft}'; }
> [0x20 resolution 23]
>
> You could use '\d+[27]5' for your purpose.
>
> Best wishes
> Christian
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