[Qgis-user] Exporting points in order

[Matt Boyd]

Thanks Nicolas,
yes, I started out doing a lot of the raster / point generation in numpy
but (so far) I've found that manipulating the data as points in QGIS is a
lot more efficient for my workflow using existing tools than trying to do
something similar with rasters and numpy. This is essentially
pre-processing work to set up a model.
I did a little more digging and thinking and I can order / sort the points
the way I need by using the mmqgis tool or the sort plugin.
Ascending / descending on X/Y  and there's an option to add some SQL to one
of the export command options that (if it allows ORDER BY) will enable me
to make a simple script to export all my datasets.
Thanks again for the tips all.

Matt



On Thu, Dec 19, 2019 at 10:54 PM Nicolas Cadieux <
nicolas.cadieux at archeotec.ca> wrote:

> Hi,
>
> If it’s a regularly spaced grid, I would dump this in a numpy array and
> read it as a raster. Some examples here
>
> https://pcjericks.github.io/py-gdalogr-cookbook/index.html
> Nicolas
>
> Le 19 déc. 2019 à 05:56, Matt Boyd <mattslists at gmail.com> a écrit :
>
>
> 
> Hi QGISers,
> I need to export a point dataset of a regularly spaced grid in a
> particular order as a csv / text file. Its one of the demands of some
> python code that I use the points in, its not my code so I don't have any
> say in this.
> The points start in the bottom left and move left to right with the final
> point being the top right corner.
> Is there an easy way to do this in the export options? I have created a
> column that in the point data that I use to sort the data so it goes in
> the right order, but it's clunky.
>
> Thanks
> Matt
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