Re: [Qgis-user] visualize and export coordinates of centroids

2022-05-24 Thread C Hamilton via Qgis-user
Once you have your centroids you can use the Lat Lon Tools plugin and run the "Point Layer to Fields" algorithm to extract the geometry and add it to one or two attribute fields. You can also specify the CRS that you want it in and what format (ie. decimal degrees, DMS and a lot of other formats)

Re: [Qgis-user] visualize and export coordinates of centroids

2022-05-24 Thread Thayer Young via Qgis-user
Hi Francesca, Assuming that your layer has a geographic coordinate system like 4326. And you have found your centroids already: Use the field calculator to add a new or virtual field with a numeric data type, e.g. double, and name it something like "lat". Then in the expression area enter the

Re: [Qgis-user] Spatial Filter

2022-05-24 Thread Bernd Vogelgesang via Qgis-user
That is "select by location" and it lives either as the yellow square with the blue pin in the first row of icons, or search its address in the toolbox. Am 24.05.22 um 14:29 schrieb Yamen Tekaji via Qgis-user: Hello all, I need to do Spatial Filtering for my data. meaning, to select a

[Qgis-user] Spatial Filter

2022-05-24 Thread Yamen Tekaji via Qgis-user
Hello all, I need to do Spatial Filtering for my data. meaning, to select a concession (polygon) and to ask QGIS to find all wells (points) that exist (or does not exist) in this polygon. is this possible? what is the tool name? Thanks Yamen ___

Re: [Qgis-user] Identify tool and closest vertices (z-values)

2022-05-24 Thread Karl Magnus Jönsson via Qgis-user
I tested against: PostgreSQL 11.5 on x86_64-alpine-linux-musl, compiled by gcc (Alpine 8.3.0) 8.3.0, 64-bit Postgis: 2.5 USE_GEOS=1 USE_PROJ=1 USE_STATS=1 Karl-Magnus Jönsson Från: Andreas Neumann Skickat: den 24 maj 2022 12:22 Till: Karl Magnus Jönsson Kopia: QGIS User List Ämne: Re: Sv:

Re: [Qgis-user] Raster

2022-05-24 Thread Richard McDonnell via Qgis-user
Easiest way I can think of doing what you want is to create a VRT of the three raster’s. Raster ==> Miscellaneous ==> Build Virtual Raster When you do this set the Nodata value to 0 (the default transparent value form the Georeference Tool) This should create a merged raster for you and allow

[Qgis-user] Raster

2022-05-24 Thread Lazanu Ciprian-Cătălin via Qgis-user
Hello, I georeferenced three maps ... all good, quite easy by using points from map canvas. When my map was ready it has a black border (image 1). This is solved by ~Custom transparency options~, and a black border disappears. But this solution is just temporarily, because if I close and reopen

Re: [Qgis-user] Identify tool and closest vertices (z-values)

2022-05-24 Thread Andreas Neumann via Qgis-user
Hi Karl-Magnus, Thank you for your confirmation. It must be something weird about 3D detection from QGIS for Postgis layers. I tested with other 3D layers and they work fine, but the layer that fails to work with Z-Values is from a much older Postgis-DB. Maybe it would work fine if we

Re: [Qgis-user] Identify tool and closest vertices (z-values)

2022-05-24 Thread Karl Magnus Jönsson via Qgis-user
Hi! It seems to work for me in 3.22.5 with Postgis PolygonZ. Can’t remember that I’ve done any custom settings for that. [cid:image001.png@01D86F60.2F0463B0] Karl-Magnus Jönsson Från: Qgis-user För Andreas Neumann via Qgis-user Skickat: den 24 maj 2022 10:53 Till: QGIS User List Ämne:

[Qgis-user] Identify tool and closest vertices (z-values)

2022-05-24 Thread Andreas Neumann via Qgis-user
Hi, We have a a Postgis PolygonZ data set an want to query the third dimension of the closest vertex. According to my users, this used to work fine in older QGIS versions, but now we can only see the x/y values and not z-values anymore. I just tested it on QGIS 3.22 (LTR) and can conform

[Qgis-user] Bing Arial or Google Hybrid

2022-05-24 Thread Sabelo Ntuli via Qgis-user
Greeting! How old is the Bing Arial photo's on the latest version and how frequent it is update? Thanks in advance. Sabelo Disclaimer This e-mail and any attachments are confidential and/or privileged, and remain the property of the Africa Health Research Institute (AHRI). If you are not

[Qgis-user] visualize and export coordinates of centroids

2022-05-24 Thread Francesca Parente via Qgis-user
Hello group, I would like to ask you what is in your opinion the best way to identify the lat-lon attributes of derived centroids in order to export them to an extra-QGis database where corresponding coordinates should match with identified locations. So far I've tried with Geocoding and MMQGIS