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2. try to send this. first time, there was a too big picture....
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Arndt Röhrig <arndt@speichenkarte.de> hat am 9. Januar 2020 um 16:29 geschrieben:
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Hi Gerd,
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thank you for your work!
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My Test:
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in "lines" i wrote
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highway=* & bicycle!=* & is_in(landuse,cemetery,all)=true { name'${LangBez}'} [0x10100 resolution 24 ]
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0x10100 is motorway :) (purple line)
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i test it also with "any", same result.
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Some ways on cementary are motorways, some not.
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For example:
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N51° 10.939' E7° 11.712'
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https://fotos.rennrad-news.de/f3/4/494/494117-1f4njnpzrdsn-test-large.png
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greets
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Arndt
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Gerd Petermann <
<a href="mailto:gpetermann_muenchen@hotmail.com">gpetermann_muenchen@hotmail.com</a>> hat am 9. Januar 2020 um 14:53 geschrieben:
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Hi Nick,
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sorry, my example was wrong. Here is the corrected version:
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highway=* & bicycle!=* & is_in(landuse,cemetery,all)=true {add bicycle=dismount}
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The function returns a value (true or false) which has to be tested.
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Gerd
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________________________________________
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Von: mkgmap-dev <
<a href="mailto:mkgmap-dev-bounces@lists.mkgmap.org.uk">mkgmap-dev-bounces@lists.mkgmap.org.uk</a>> im Auftrag von Pinns UK <
<a href="mailto:osm@pinns.co.uk">osm@pinns.co.uk</a>>
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Gesendet: Donnerstag, 9. Januar 2020 14:50
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An:
<a href="mailto:mkgmap-dev@lists.mkgmap.org.uk">mkgmap-dev@lists.mkgmap.org.uk</a>
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Betreff: Re: [mkgmap-dev] Branch is_in ready for a first test
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Hi Gerd
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I used the latest
<a target="_blank" href="http://www.mkgmap.org.uk/download/mkgmap-is-in-r4408.zip" rel="noopener">http://www.mkgmap.org.uk/download/mkgmap-is-in-r4408.zip</a>
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I added
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highway=* & bicycle!=* & is_in(landuse,cemetery,all) {add bicycle=dismount}
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& get
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Error in style: Error: (lines:22): Value 'is_in()[landuse, cemetery,
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all]' is not part of an expression
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Error in style: Error: (lines:22): Value 'is_in()[landuse, cemetery,
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all]' is not part of an expression
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Error in style: Error: (lines:22): Value 'is_in()[landuse, cemetery,
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all]' is not part of an expression
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Am I missing something ?
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I'm confused about which option if any is required
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If I use
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--is-in-hook=landuse
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I get an invalid option error
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r
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Nick
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On 09/01/2020 11:43, Gerd Petermann wrote:
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Hi all,
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the branch version r4408 implements the style function is_in with three parameters tag-key,tag-value,method
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- tag-key can be something like landuse or natural or amenity
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- tag-value would be the expected value for that tag-key
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- method has to be "any" or "all".
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Example usage in lines:
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# no cycling within a cemetery
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highway=* & bicycle!=* & is_in(landuse,cemetery,all) {add bicycle=dismount}
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Before any style rule is evaluated the function evaluates the list of all ways found in the input file. When a way matches the given tag (key+value) and is closed and complete the shape geometry is stored in a spatial index.
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With the current implementation this index is created for appearance of the is_in function in a style rule (subject to optimization)
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When the style function is called it retrieves the stored shape(s) which intersect the boundary of the element.
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If none is found "false" is returned.
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If there are multiple such shapes the are merged where possible, so that overlapping or touching shapes are combined to a single shape which may include holes.
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The list of (outer) shapes is then tested one after the other until one shape is found which either contains the element completely or - when "any" is used as method - partially. If none is found the value "false" is returned.
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If a match is found and the combined shapes have holes, a final test is done to find out if the element is within the hole.
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If method "any" is used and the shape is completey within one hole "false" is returned.
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If method "all" is used and the shape is partly within one hole "false" is returned.
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If we get here true is "returned"
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I've also slightly changed the behaviour of the LocationHook and the ResidentialHook. The results should be a bit more predictable now as searches are done with higher precsion. Still, both try to find a nearby boundary(shape) if none is found at the exact position.
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The ResidentialHook is now automatically disabled when the style doesn't use mkgmap:residential anywhere.
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TODO:
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- various possible special cases need more testing
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- maybe add more methods for cases where parts of the tested element touch the boundary of the shape.
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- tuning
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- unit tests
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As always with branch version the binary can be found at the bottom of the download page.
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<a target="_blank" href="http://www.mkgmap.org.uk/download/mkgmap.html" rel="noopener">http://www.mkgmap.org.uk/download/mkgmap.html</a>
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I've tested this with the example file posted before, accept for b18 all cases work as expected.
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Gerd
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