[Qgis-user] regularly spaced address markers on alternating side of road

[Neumann, Andreas]

Hi Dan, 

Interesting problem. 

Are these regularly spaced or should they appear at given vertices of
the input vector line? 

I was thinking that maybe one could use a marker line, with dynamic font
markers - but unfortunately there are no "per feature iterators" or
"counters" available in the QGIS expressions. If these would be
available, it would be an easy task. 

Also, the labeling options, combined with the geometry expressions are
pretty powerful and dynamic, but again - without iterators ... 

Geometry generators also come to my mind, but again - without iterators
in QGIS expressions we are blocked. 

----------------- 

I am forwarding this to the dev list to see if someone has an idea - of
course with Python there would be options ... 

Andreas 

On 2016-06-29 07:11, Dan Jacobson wrote:

> 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.
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