Re: [QGIS-it-user] metodi per individuare piscine con qgis

2019-08-01 Thread SC
mmm otb, saga, scp , grass scusate ma in pratica così è tutto , io ho visto solo scp e già di suo è difficile per caso non è che esiste un tutorial di un caso simile che possa essere adattato a questo caso? alla fine io penso che ci siano tutti gli uffici tributi e tecnici dei comuni

Re: [QGIS-it-user] metodi per individuare piscine con qgis

2019-08-01 Thread Paolo Cavallini
Penso che con otb dovresti farcela. On 1 August 2019 18:20:24 CEST, Alessandro Perego wrote: >Ho guardato velocemente il link che hai indicato. Non ho capito >esattamente la procedura ma sembrerebbe qualcosa di simile alla >"Supervised Classification" che  si può fare con immagini

Re: [Qgis-user] failed to add WMS layer

2019-08-01 Thread Andrea Peri
Have you the cache to zero size? I discovered this kind of strangenissue some weeks ago If the qgis cache size is turn to zero the capabilities fail when go to add the map to the Canvas. This issue is on only with some wms (mapserver, geoserver) do not with qgisserver. I dont know with arcgis

Re: [Qgis-user] Smoothing polygons

2019-08-01 Thread Christoph Jung
What a shame, I totally ignored the grass tools ^^’ Thanks at all for your fast responses. I will try it out during the next days. Christoph > Am 01.08.2019 um 17:35 schrieb Carolina Boccato : > > Hi Christoph, > > Yes, there is this implementation! > > In the processing toolbox at the

Re: [Qgis-user] Informação.

2019-08-01 Thread Jorge Gustavo Rocha
Oi Paulo, Tenta em https://gadm.org/ Boa sorte, Jorge Gustavo Às 19:49 de 01/08/19, Paulo Brandao escreveu: > Boa tarde... > > Onde posso baixar shapefiles dos EUA (divisão dos estados) e da África > (divisão dos estados) ? > > Pois não estou localizando onde baixar estes arquivos. > >

[Qgis-user] Informação.

2019-08-01 Thread Paulo Brandao
Boa tarde... Onde posso baixar shapefiles dos EUA (divisão dos estados) e da África (divisão dos estados) ? Pois não estou localizando onde baixar estes arquivos. Obrigado. Paulo Brandão. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List

Re: [Qgis-user] failed to add WMS layer

2019-08-01 Thread Stewart Holt
I use USGS WMS and WMTS layers. At some point in the recent past the WMS layers stopped working. I am almost sure they have worked in QGIS V3. I usually use WMTS because of the speed, but for final publishing, I have seen some cases where a corresponding WMS layer is higher definition, so I would

[QGIS-it-user] problemi di classificazione

2019-08-01 Thread Claudia de Bari
Buongiorno a tutti, sono una neoiscritta nonché neoutilizzatrice di QGis come sistema informativo geografico. Spero qualcuno possa darmi delle indicazioni in merito alla classificazione dei dati. Il problema é questo: ho due set di dati, che esprimono valori quantitativi della stessa sostanza,

Re: [QGIS-it-user] metodi per individuare piscine con qgis

2019-08-01 Thread Alessandro Perego
Ho guardato velocemente il link che hai indicato. Non ho capito esattamente la procedura ma sembrerebbe qualcosa di simile alla "Supervised Classification" che  si può fare con immagini multispettrali. In poche parole bisogna indicare aree campione del tipo desiderato poi il software ne

Re: [Qgis-user] Smoothing polygons

2019-08-01 Thread Carolina Boccato
Hi Christoph, Yes, there is this implementation! In the processing toolbox at the Grass provider you will find v.generalize. This one has several algorithms, one of them is chaikins. Sincerely, Carolina On Thu, 1 Aug 2019 at 10:18, Stefan Giese wrote: > Hi Christoph, > > under processing

Re: [QGIS-it-user] problema con python qgis

2019-08-01 Thread Giacomo Fontanelli
Ciao Matteo e grazie per i consigli Ho trovato la soluzione: Con QGIS 2.x i raster layer in INPUT erano dati sottoforma di una stringa con questa forma '/home/File1.tif;/home/File2.tif;/home/File3.tif' Con QGIS 3.x invece si usa direttamente una lista, come ['/home/File1.tif',

[Qgis-user] Investigation into available services

2019-08-01 Thread Richard McDonnell
Hi all, I am unsure if this is the right space for this, but was hoping someone might be able to help me, or point me in the correct direction. I have posted on the European OSGeo mailing list, but have had very few hits! I am carrying out research into Service Providers, to see what options

Re: [Qgis-user] Smoothing polygons

2019-08-01 Thread Stefan Giese
Hi Christoph, under processing tools you will find 2 vector smooth tools, one is native QGIS, the other comes from SAGA (http://www.saga-gis.org/saga_tool_doc/2.2.2/shapes_lines_7.html). Just type "smooth" into the filter of the processing tools. Mit freundlichen Grüßen Stefan Giese

Re: [Qgis-user] Raster analysis , Proximity (raster distance)

2019-08-01 Thread Richard McDonnell
Hi Dimitris, Best tool available is GDAL. You can use this from within QGIS, by going to, Processing Toolbox and typing in repro select Warp (reproject), select your Input layer, set your Source CRS and then select the Target CRS. This should be able to do what you want. Hope it helps,

[Qgis-user] Smoothing polygons

2019-08-01 Thread Christoph Jung
Hello everybody, Does QGIS has a similar smoothing function like ArcGIS described in the following webpage? https://desktop.arcgis.com/de/arcmap/10.3/tools/cartography-toolbox/smooth-polygon.htm I think I saw something like the result of the PAEK algorithm in QGIS, but I cannot remember when

Re: [Qgis-user] Raster analysis , Proximity (raster distance)

2019-08-01 Thread Dimitris sal
I tried to change the CRS to a meter one , i create a new distance analysis with it and when i try to convert it back to EPSG 4326 the data in the raster was destroyed. Richard my image is at 700x700 at specific coordinates in degrees. Is there any tool i can use to convert the data from my

[QGIS-it-user] metodi per individuare piscine con qgis

2019-08-01 Thread SC
salve sarei curioso ti sapere se c'è un metodo semplice per usare qgis per individuare  piscine tramite qgis su una mappa satellitare o ortofoto ho trovato questa procedura per arcigis

Re: [Qgis-user] Raster analysis , Proximity (raster distance)

2019-08-01 Thread Richard McDonnell
Hi Dimitris, Welcome!! To answer your question, use the Georeferenced coordinates and run, the distances will be based on the resolution of your image, so 5m resolution will result in a proximity raster of 5m intervals. You might want to set the Maximum distance, as this will help to minimise

Re: [Qgis-user] Raster analysis , Proximity (raster distance)

2019-08-01 Thread Raymond Nijssen
Hi Dimitris, You could convert your raster data into a projection that uses meters. > Layer > Save as... Raymond On 01-08-19 13:12, Dimitris sal wrote: Hello to all , This is my first message here. I am trying to create a proximity map with the Raster analysis tool. My problem is that I

[Qgis-user] Raster analysis , Proximity (raster distance)

2019-08-01 Thread Dimitris sal
Hello to all , This is my first message here. I am trying to create a proximity map with the Raster analysis tool. My problem is that I only get two options for distance units , pixels coordinates and georeferenced coordinates while I want to get them in meters. I also used the grass tool ,