[Qgis-user] Import lines from cvs

[Nicolas Cadieux]

Well, 
Updating geometries from columns.... Try doing that with MapInfo!!!! 
Cool tips! 
:) 
Nicolas Cadieux M.Sc. 
On Jan 6, 2016 20:58, "Nathan Woodrow [via OSGeo.org]	" <ml-node+s1560n5244032h53 at n6.nabble.com> wrote: 

	Or use excel to make a WKT column and import that. 
Nathan 
On Thu, 7 Jan 2016 11:48 am Nyall Dawson < [hidden email] > wrote: <blockquote style="border-left:2px solid #cccccc;padding:0 1em" style="margin:0 0 0 0.8ex;border-left:1px #ccc solid;padding-left:1ex">On 7 January 2016 at 07:08, Joris Hintjens < [hidden email] > 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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