[Qgis-user] Import lines from cvs

[Fernando M. Roxo da Motta]

On Fri, 8 Jan 2016 09:07:48 +0100, Matthias Kuhn <matthias at opengis.ch>
wrote:

  Hi all,


  Sorry to be nosy,  I was trying that myself on Qgis 2.12 and couldn't
find the option during save.   The I notice the initial statement:

   "This is relatively straightforward in QGIS master:"

  So I got that those options are only available in the master
development version.    Did I got that right?


  Regards.


> Hi Joris
> 
> On 01/07/2016 10:14 PM, Joris Hintjens wrote:
> > Thanks Nyall,
> > 
> > I try to understand your procedure, but…:
> > 
> > line3: “save as…”: Before doing that, I already need a geometry
> > defined, a proces you describe later i the process. I don’t get it.
> 
> Note the "with all null geometries" comment in 5. This will just
> prepare an empty container which will be filled later.
> 
> > line 4: "- expand out the "Geometry” group…”  This is an option
> > from the “load csv layer”, not from “save layer as (shape)”
> 
> ... I see it as well in "save as"
> 
> > line 8: change field to <geom>: which field?  I lost you there
> > completely. Sorry.
> 
> Where you should specify a field name
> 
> > 
> > 
> > 
> >> Op 7 jan. 2016, om 02:47 heeft Nyall Dawson
> >> <nyall.dawson at gmail.com> het volgende geschreven:
> >>
> >> 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:
> >>
> >> 1- import your CSV file
> >> 2- right click the CSV layer, and choose "Save as"
> >> 3- change format to "ESRI Shapefile". Choose the correct CRS for
> >> your coordinates.
> >> 4- expand out the "Geometry" group and change "Geometry type" from
> >> "Automatic" to "LineString"
> >> 5- click OK, the new LineString shapefile (with all null
> >> geometries) will be added to the project
> >> 6- now, you need to create the geometries. This is done through the
> >> field calculator.
> >> 7- tick "update existing field"
> >> 8- change the field to "<geometry>"
> >> 9- 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)
> >> 10- click OK. Done!
> >>
> >> Nyall
> >>
> >>
> >>> thanks for your comments
> >>>
> >>> Joris
> >>>
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  Roxo

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