[Qgis-user] Contour Elevation Labeling

[Garth Fletcher]

I made a contour.shp file which contains 5' contours for my area.
I contains a field "ELEV" which holds the elevation in feet.

For the maps I currently am making I wanted:
   10' contour intervals
  100 intervals to use heavier lines and to be labeled.

I use the following settings in the Layer Properties dialog to achieve
the above goals

Source pane:
  Provider feature filter (by using Query Builder)
   "ELEV"%10 = 0     {this ignores any 5' contours, e.g., 105, 115, ...

Symbology pane:
  Simple line
   Stroke width
    Expression: if ((ELEV % 100)=0,0.20,0.075)
      {use 0.200 mm lines for 100' and 0.075 mm for all others}

Label pane:
  Label with
    Expression: if ((ELEV % 100)=0,ELEV,NULL)
      {use ELEV if a multiple of 100, otherwise no label

Hope the above helps,
-- 
Garth Fletcher,
Mason, NH 03048

Andrew Davies <tazdronesolutions at gmail.com> wrote:
> Hello,
> 
> I am generating contours from drone deploy & trying to add on contour
> interval labels on the vector in QGIS.
> My current method for attempting this is:
> 
> - layer styling
> - abc
> - Single Labels
> - Label with...
> 
> With no elevations option.
> 
> Thank you all in advance for the help.