[Qgis-user] Import lines from cvs

[Nyall Dawson]

On 7 January 2016 at 07:08, Joris Hintjens <jorishin at gmail.com> wrote:
> Hello,
> I’m lost.
> I have a list of movements. A table with (among others) a column “FROM”  and a column “TO” (both containing coordinates)
>
> How can I import this in QGIS so that I have a bunch of lines going from FROM to TO?
>

This is relatively straightforward in QGIS master:

- import your CSV file
- right click the CSV layer, and choose "Save as"
- change format to "ESRI Shapefile". Choose the correct CRS for your
coordinates.
- expand out the "Geometry" group and change "Geometry type" from
"Automatic" to "LineString"
- click OK, the new LineString shapefile (with all null geometries)
will be added to the project
- now, you need to create the geometries. This is done through the
field calculator.
- tick "update existing field"
- change the field to "<geometry>"
- enter the expression:
'make_line(make_point("x1","y1"),make_point("x2","y2"))' (but replace
x1, y1, ... with the correct columns names from your original CSV
file)
- click OK. Done!

Nyall


> thanks for your comments
>
> Joris
>
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