Hi
For your listing, although it would not provide the file type i.e.
point, line, polygon etc, you could simply create a DOS batch command
(dir/s *.shp > shapefilelist.txt) to locate all the file and generate a
list of their locations. Then parse these through to the merge vector
layer. If you are merging them all into a Geopackage, then file type
would not be relevant and you could then sort them once they are in a
single location. I don't think the Geopackage would have a limitation on
the number of files and records in it.
Perhaps this can assist.
---
Regards,
Nigel Berjak
S3 Technologies
Geographic Information Systems & Large Format Printing specialists
T: +27 33 3423681
F: +27 86 6721242
E: ni...@s3.co.za
Website: http://www.S3.co.za
Please consider the environment before printing this email.
On 2024-05-10 04:06, Nyall Dawson via QGIS-User wrote:
On Fri, 10 May 2024 at 09:06, Tony Shepherd (FarmMaps NZ) via QGIS-User
<qgis-user@lists.osgeo.org> wrote:
Hi
I have loads, literally thousands, of SHP, GPKG, TAB files located in
loads of different folders and sub-folders.
Is there a plugin that will trawl through a set of folders, copy say
just the polygons from each file into a new file, and populate a field
with say the filename and folder the polygon(s) came from?
Essentially combining a heap of files into one with some metadata
about where the data came from?
Why? I have files from clients dating back about 20 years. Clients
sell properties. Properties get subdivided. New clients come and see
us, and often we don't realise we have GIS info on file for that
property from many years ago, usually under a different name. It
would be handy to see a polygon on the screen and easily go back to
some old GIS data.
Maybe I am missing an easy tool to do this, but I can't see anything
obvious.
You could use the "Merge Vector Layers" tool from the Processing
toolbox, that does everything you want. The trickiest bit would be
getting a master list of ALL your shapefiles/etc you want to combine
and passing this to the tool. It's not going to be easy from the GUI
itself, as that only allows you to add files from a single folder at
once.
I'd run the tool on the files from a single folder, then checkout the
processing history dialog and copy the python command which corresponds
to what you just did. You could then adapt this command to pass a
complete list of all the files you want to combine. (It's quite
straightforward in Python to build a list of files which recursively
match a file pattern -- see eg https://stackoverflow.com/a/2186565 )
Hope that helps!
Nyall
Cheers
Tony
------------------------------------------------------------------------------------------------------------------
Tony Shepherd
_ GeoSpatial Manager @ FarmMaps NZ & Photographer @ Shepherd Photos_
_Phone_ - 027 435 6193 | _Website_ - shepherdphotos.co.nz [1]
_Email_ - Maps t...@farmmaps.nz | _Email_ - Photos
t...@shepherdphotos.co.nz
_Facebook_ TonyShepherdPhotos [2]
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