[Qgis-user] Clip Lines (Roads) with Polygon (States)

[Mike Flannigan]

Now I am wondering if I am posting to the correct list.
I guess it's not the list I intended to post to.

Anyway, when I filled this form out
http://www.mflan.com/temp/clip1.jpg
and clicked on "Run as Batch Process", it produces a
blank box:
http://www.mflan.com/temp/clip2.jpg

I didn't know what to do with that, so I did the same:
http://www.mflan.com/temp/clip3.jpg
but clicked on Run in Background, and it gave an error:
http://www.mflan.com/temp/clip4.jpg

But it did create a USAroads shape file.  When I loaded it
it appeared to be blank, even though it is 10.9 MB:
http://www.mflan.com/temp/clip5.jpg

So I tried to find Feature (26).
I believe it is this one:
http://www.mflan.com/temp/clip6.jpg

If anybody has the patience for all of this, the
layer files are here:

http://www.mflan.com/temp/roads-north_america.zip
http://www.mflan.com/temp/statep010.zip


BTW, judging by other shape files I have found in my
records, I think I have successfully clipped roads in
the past.  I just don't remember how to do it now.

Perhaps I need to create only one, single polygon for
the lower 48 states as a first step??  I will work on
that for now.


Mike



On 3/17/2019 9:34 AM, Mike Hyslop wrote:
> Good morning,
>
> In QGIS 3.x,
>
> Vector > Geoprocessing Tools > Clip
>
> Choose input and clip layer and output layer format and name. 
> Intersect would add the attributes of both layers to the output; clip 
> simply subsets the input features to the area encompassed by the clip 
> (polygon) layer, which seems to be what you want.
>
> Best,
> Mike
>
> On Sun, Mar 17, 2019 at 10:03 AM Mike Flannigan <mikeflan at att.net 
> <mailto:mikeflan at att.net>> wrote:
>
>
>     Like so many others I would like to clip a roads
>     layer to contain only roads within my polygon.  Is
>     this really the easiest way for me to accomplish that:
>     https://api.queryxchange.com/q/23_212335/clip-or-intersect-lines-to-polygon-with-qgis/
>
>     Yes, I see that there are a lot of possible ways
>     to interpret "clipping a line with a polygon",
>     but it seems like this should be easier than that.
>
>
>     This is provided in case anybody can use these:
>     http://www.mflan.com/temp/cliptest.qgs
>     http://www.mflan.com/temp/cliptest.qgz
>
>     Of course I don't just want it clipped, I want
>     a simple clipping procedure that users like me
>     can use.
>
>     I am using QGIS 3.2 for Windows.
>     Thank you.
>
>
>     Mike
>
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