[Qgis-user] merge shapefiles into one

[Nicolas Cadieux]

Hi Niall,

This is a causes by a Windows 10 limite on the amount of open files it can handle (around 1024 I think).  Problems happen when you have thousands of opened shapefile that need to be merged (like when you use and external program to find the file extent for thousands of files on a HD drive).  This is not a QGIS issue. Saga loads everything into memory so the problem is not seen in SAGA.  It does not keep a handle on the files once they are opened.

Nicolas Cadieux
Ça va bien aller!

> Le 12 avr. 2020 à 18:26, Nyall Dawson <nyall.dawson at gmail.com> a écrit :
> 
> On Mon, 13 Apr 2020 at 08:09, Nicolas Cadieux
> <nicolas.cadieux at archeotec.ca> wrote:
>> 
>> Hi,
>> 
>> If you have too many shapefile for this to work, d̶r̶a̶g̶ ̶a̶n̶d̶ ̶d̶r̶o̶p̶ ̶i̶n̶ ̶S̶a̶g̶a̶.̶
> 
> File a bug report, and we'll investigate.
> 
> Nyall
>> 
>> Nicolas Cadieux
>> Ça va bien aller!
>> 
>> Le 12 avr. 2020 à 15:11, Dave Marshall <43carnaby at gmail.com> a écrit :
>> 
>> 
>> Mark,
>> 
>> I recently upgraded to 3.12 and didn't do anything extra to the standard upgrade but I do have the option - see below:
>> <image.png>
>> 
>> 
>> Dave
>> 
>>> On Sun, 12 Apr 2020 at 19:07, Mark Fogarty <mark at fogartyconsulting.com> wrote:
>>> 
>>> hi. i'm new to the list and qgis, apologies if this has been asked. we're
>>> working with the us census tract files available from census.gov here:
>>> 
>>> https://www.census.gov/cgi-bin/geo/shapefiles/index.php?year=2019&layergroup
>>> =Census+Tracts
>>>