[Qgis-user] Textual representation of styles ?

[Lars I. Nielsen, LIFA A/S]

Hi list.

Does QGIS utilize and support textual styles, e.g. as read from data ?

OGR has a feature style specification (https://www.gdal.org/ogr_feature_style.html ), with some examples shown below.

Has anyone used QGIS to facilitate such style representation ?

--

Here are some example style definition strings:

  *   A 5 pixels wide red line:
PEN(c:#FF0000,w:5px)
  *   A polygon filled in blue, with a black outline:
BRUSH(fc:#0000FF);PEN(c:#000000)
  *   A point symbol:
SYMBOL(c:#00FF00,id:"points.sym-45,ogr-sym-7")
  *   A text label, taking the text string from the "text_attribute" attribute field:
LABEL(f:"Times New Roman",s:12pt,t:{text_attribute})"
Here is what a style table that contains all the above styles could look like:
    road:      PEN(c:#FF0000,w:5px)
    lake:      BRUSH(fc:#0000FF);PEN(c:#000000)
    campsite:  SYMBOL(c:#00FF00,id:"points.sym-45,ogr-sym-7")
    label:     LABEL(f:"Times New Roman",s:12pt,t:{text_attribute})

--

I know that QGIS supports its own XML style format, and supports some form of SLD. Both are layer based, though, not feature based.

Med venlig hilsen
Lars I. Nielsen, LIFA A/S
GIS konsulent, FME Certified Professional

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