Hi Nyall, For marker lines, with regularly spaced markers at a given interval, I'd like to have an index number - 1 to n for each feature.
Or - for multi-geometries, it would also be useful to have the index number - the index nr of the nth ring or nth line in a multilinestring. I think, such an index/counter it should be per feature and not global. For linestring labeling it would also be interested to regularly place labels, with a counter/iterator and place the labels perpendicular to the tangent. We could collect some use cases for such indexes to get this into QGIS 3.x, if possible. Andreas On 2016-06-29 09:35, Nyall Dawson wrote: > On 29 June 2016 at 17:01, Neumann, Andreas <a.neum...@carto.net> wrote: > >> Hi, >> >> I am forwarding this interesting symbology / labeling problem to the >> dev-list, perhaps someone has an idea with the existing symbology options / >> geometry generators / expressions / some Python magic. >> >> See also http://lists.osgeo.org/pipermail/qgis-user/2016-June/036842.html >> >> What I am personally also interested in, is getting access to the index nr >> of a marker. If every marker knew - I am the first, second, third, etc. >> marker, we could use it in expressions and add dynamic marker content and >> change properties based on the marker index. > > Do you mean within a multipoint? or across all features? > > Nyall > >> Or, we could have per feature counters/iterators that either allow to >> calculate n marker or label positions on the fly. >> >> Something to consider for QGIS 3.0 ;-) >> >> Andreas >> >> -------- Original Message -------- >> >> Subject: [Qgis-user] regularly spaced address markers on alternating side of >> road >> Date: 2016-06-29 07:11 >> From: Dan Jacobson <jida...@jidanni.org> >> To: qgis-u...@lists.osgeo.org >> >> I want to label vectors (roads) with proposed addresses: >> >> 21 23 25 27 29 >> ================== >> 22 24 26 28 >> >> I suppose I will use the Qchainage plugin and then post-process the >> output with a simple perl script to get the exact labels I want (20, 30, >> 40...). >> >> I don't suppose I can make them on either side of the road so I suppose >> I will have to put them along the centerline. >> >> There are no houses here. Just guide points for government workers if >> houses were ever to be built. >> >> I can't use StackExchange to ask this because I don't have enough Karma >> and never will. >> _______________________________________________ >> Qgis-user mailing list >> qgis-u...@lists.osgeo.org >> List info: http://lists.osgeo.org/mailman/listinfo/qgis-user >> Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user >> >> _______________________________________________ >> Qgis-developer mailing list >> Qgis-developer@lists.osgeo.org >> List info: http://lists.osgeo.org/mailman/listinfo/qgis-developer >> Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-developer
_______________________________________________ Qgis-developer mailing list Qgis-developer@lists.osgeo.org List info: http://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-developer
