[Qgis-user] Layer question

[Shane]

On 07/31/2015 06:50 PM, Tom Lennon wrote:
> Hi Shane
> Is it that you want the parking lot and the road outline to disappear 
> if the road touches the parking lot?
>

   Yes, it is.  Thanks for the idea - I hadn't though of that 
(obviously).  Easier than drawing polygons - although another post 
suggested a method to convert lines to polygons which I might try just 
to see how it goes.

   Shane

> You can do that if you use a different way to outline the roads and 
> parking lots.
> You need to duplicate both the road layer and the parking lot layer.
> Then use one road layer to make fat black roads and the other to make 
> thin gray road fill.
> Then use one parking poly to make fat black parking lots (fat 
> outlines) and the other to do the gray fill with no pen outline.
>
> The trick is in the arrangement of the layers, it should be:
> Parking lot gray fill on top
> Road Gray fill
> Parking lot fat black
> Road Fat black on the bottom
> Hope that is what you wanted.
>
> Tom
>
>
>
> On Fri, Jul 31, 2015 at 4:09 PM, Shane <shaned173 at gmail.com 
> <mailto:shaned173 at gmail.com>> wrote:
>
>
>     Hi Bernd and all other responders,
>
>     On 07/30/2015 05:50 PM, Bernd Vogelgesang wrote:
>>     Hi Shane,
>>     I think without a screenshot, we have no chance to really get an
>>     idea what it's all about.
>
>       I'm going to try inlining some small pics ... I don't want to
>     create another account on another website just to post two pics. 
>     With any luck these pics won't be scrubbed by the list.
>
>       Below is how the current map is rendered.  The road layer is
>     below the parking lot layer and the parking lot layer has no
>     outlines.  The road layer has thin, black outlines.  Note that the
>     gray areas have no black lines across them.  This is the desired
>     outcome.
>
>
>
>       But I want to the parking lots to also have black outlines. 
>     When I set this up, I get the following pic which shows the black
>     outlines rendered on top of the roads.
>
>
>
>       Swapping the order of the layers only exchanges road outlines
>     for parking lot outlines (not shown).  The blending options don't
>     change the outcome and sometimes adversely affect the colors.  I
>     am virtually certain that I need to convert the roads to polygons
>     and merge them with the parking lots.
>
>       Shane
>
>
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>
>
>
> -- 
> tolennon at gmail.com <mailto:tolennon at gmail.com>

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