[Qgis-user] Display only selected vector line feature

[Garth Fletcher]

Hi Morgan,

It looks like each road is a separate "feature", i.e., each has a unique 
id and Name.

An easy solution, assuming you want to highlight a single road at a 
time, is to use
a filter.

Double click on the layer to bring up the Layer Properties dialog
  Along the left edge click on the 2nd icon down, looks like a wrench,  
"Source"
   Lower right, click on Query Builder
    In Query Builder dialog
      in Fields  double-click on id
        that will enter "id" in Provider Specific Filter Expression
      then click on =
      then enter 1
      your query should look like   "id" = 1
    click OK to the Query Builder and OK to the Layer Properties dialog
Now only the road whose id=1 will display.

When you want to instead highlight road 2, just go back into the Query 
Builder and change the 1 to a 2.

You could also have chosen to use the Name field.
In that case in Fields double-click on Name followed by =.
Then over to the right in the Values section, click on All
That will list all the road names,
   and double-clicking on one of them will enter its name in '  ' after 
the =
So your query might look like  "Name" = 'Webster - Piedmont'

On 6/1/25 9:51 PM, Morgan Fletcher <morgan at hahaha.org> wrote:
> ... I put all the roads - 18 - in one layer. I want to be able to 
> selectively render each road as a semi-transparent yellow line, rather 
> than have all 18 simultaneously shown. Is that possible? ... 

-- 
Garth Fletcher