Re: [Qgis-user] Handling a large number of raster layers with Qgis architectural limitations

2019-11-27 Thread Nicolas Cadieux
Hi Patrick, How many files are we dealing with before it crashes? Nicolas > Le 27 nov. 2019 à 22:35, Patrick Dunford a écrit : > >  > Hello, > > the issue is not with the performance drawing the raster, it is with the > system only being able to have a certain number of file based rasters

Re: [Qgis-user] Handling a large number of raster layers with Qgis architectural limitations

2019-11-27 Thread Falk Huettmann
Dear Colleagues, Patrick, thanks, this is a VERY relevant issue, and might be the future concept for GIS, of sorts (=more data volumes). While I have no direct answer to your architecture question (sorry), I have a sample dataset and application on the topic and can share it with people as they

Re: [Qgis-user] Handling a large number of raster layers with Qgis architectural limitations

2019-11-27 Thread Patrick Dunford
Hello, the issue is not with the performance drawing the raster, it is with the system only being able to have a certain number of file based rasters loaded in a project before it will crash. On 22/11/19 11:08 AM, Alexandre Neto wrote: AFAIK, WMST creates pyramids in cache as needed, hence

Re: [Qgis-user] [QGIS-Developer] Python Implementation of QgsNetworkContentFetcher

2019-11-27 Thread Nyall Dawson
On Thu, 28 Nov 2019 at 02:07, C Hamilton wrote: > > For some reason I cannot seem to get QgsBlockingNetworkRequest to work. Also > I think there is an error in the documentation where it says, "After > completion of a request, the reply content should be retrieved by calling >

Re: [QGIS-it-user] Problema trasformazioni

2019-11-27 Thread andreaerdna
Luca Angeli wrote > Buonasera, > uso QGIS 3.4.13-2 su Win 10 > Il problema dell'aggiornamento alle PROJ 6 è noto o è necessario > segnalarlo? > > E' possibile sapere come fare per risolvere il problema? Purtroppo la questione è un po' complicata e si puo' risolvere in vari modi: Se vuoi usare

Re: [QGIS-it-user] Problema trasformazioni

2019-11-27 Thread Luca Angeli
Buonasera, uso QGIS 3.4.13-2 su Win 10 Il problema dell'aggiornamento alle PROJ 6 è noto o è necessario segnalarlo? Il sistema Monte Mario fuso ovest (EPSG 3003) è largamente usato dagli utenti. Da quello che ho capito dalla risposta di Francesco Marucci è necessario inserire manualmente i 7

Re: [QGIS-it-user] funzione Aggregate del Field Calculator

2019-11-27 Thread Luca Bellani
Grazie! tutto chiarissimo ora!!! Ciao -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-Italian-User-f5250612.html ___ QGIS-it-user mailing list QGIS-it-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/qgis-it-user

Re: [Qgis-user] [QGIS-Developer] Python Implementation of QgsNetworkContentFetcher

2019-11-27 Thread C Hamilton
For some reason I cannot seem to get QgsBlockingNetworkRequest to work. Also I think there is an error in the documentation where it says, "After completion of a request, the reply content should be retrieved by calling getReplyContent()." It appears to me to be reply(). This is basically my

Re: [Qgis-user] [QGIS-Developer] Python Implementation of QgsNetworkContentFetcher

2019-11-27 Thread C Hamilton
Nyall, Thanks so much for this detailed explanation. Without it I probably would have taken the wrong direction and wasted a lot of time. QgsBlockingNetworkRequest is probably what I need so my development with this will assume user's have 3.6 or later. Calvin On Wed, Nov 27, 2019 at 12:35 AM

[QGIS-it-user] Calcolare valori basandosi su altre righe

2019-11-27 Thread afilipel
Buongiorno a tutti, il calcolatore dei campi permette di introdurre formule basate su righe differenti? -- Colonna A | Colonna B -- Tipo 1 | 55 Tipo 2 | -1 Tipo 3 | 10 -- Ad esempio se Tipo 1 > 0 & Tipo 2 < 0 & Tipo 3 <

Re: [Qgis-user] [QGIS-Developer] Instalacion de Qgis en Rhel 7 u 8

2019-11-27 Thread Luigi Pirelli
Hi Fabian this is a english speaking mailing list! btw if you need latest stuffs you shouldn't use redhat that is a conservative (certified oriented) distribution. BUT you can override the problem running qgis ina docker container. RedHat should have docker... then just do: docker pull

Re: [QGIS-it-user] funzione Aggregate del Field Calculator

2019-11-27 Thread Totò
Luca Bellani wrote > Semplice per te... ahaha! potresti darmi dei dettagli in piú sui > componenti > del codice? > > la variabile @curret_geometry si attiva con un form aperto del value > relation...quindi se ho un semplice layer di punti, senza widget, non > funzionerebbe... facio delle prove..