[Qgis-user] Middle line of a river basin

Dear All, I need to automatically delineate the middle line of a river basin/valley bounded by a Shp and then to construct lines perpendicular to it spaced at will. All this to get the Transverse topographic symmetry factor (T). My appreciation in advance, Allan López

Re: [Qgis-user] help please

QGIS can definitely do all of those things. We have been using and loving the Input app but for your purposes a simpler method might work. If you have the person on the site take a picture of the machine with their phone (location services should be turned on) you could then collect all of the

Re: [Qgis-user] help please

Hi, Not sure what the question is but yes, these are all very basic things that can be done in QGIS with simple queries or spatial queries. It’s just a question on having the data. Would be happy to help out if you need training on this kind of thing. Nicolas Cadieux

Re: [Qgis-user] Filter in field group sections of report

If you can define the filter expression and just have users change it, there is also the option of using custom project, layout, or report variables which the user can simply edit or update. On Mon, 11 Oct 2021, 19:33 Jésahel Benoist, wrote: > Hello Yann, > > You can do it programmatically with

Re: [Qgis-user] Filter in field group sections of report

Hello Yann, You can do it programmatically with python and a custom toolbar. But, I had a similar problem and happily, qgis as a multipurpose tool is widely accepted by average users and filtering can be easily explained. In fact my problem was worst, I have tens of layers. I created two

Re: [Qgis-user] R in Qgis not running

Thanks Andrea the installation was successful. the problem was in the address of the folder for my library Em sex., 8 de out. de 2021 às 14:44, Andrea Giudiceandrea < andreaer...@libero.it> escreveu: > julio cesar oliveira Fri, 08 Oct 2021 07:41:13 -0700> I still can't run > the scripts!! > >

Re: [Qgis-user] Filter in field group sections of report

Hi Jésahel, Thanks for your reply. Your proposed solution would be fine if it was just me. What I forgot to say is the purpose: I want to share the QGIS project with other users who have limited QGIS skills. A user story would be: the user opens the QGIS project, selects the polygon layer

[Qgis-user] calculation of 3D distance between 2 layers of time-stamped points

Hi, Can someone provide me guidance how to calculate the 3D (split in X, Y and Z) distance (in map units) for each point in layer 1 (containing several points, typically between 100 and 100 points), and the nearest point in layer 2 (also containing several points), whereby the difference in

Re: [Qgis-user] help please

You need a field data collection solution. There are twi offerings based on QGIS that can help you collect data using a mobile device and have the data stored in a central QGIS database. Check out https://inputapp.io/en/ and https://qfield.org/ [image: Logo] Ujaval

Re: [Qgis-user] Qgis-user Digest, Vol 188, Issue 30

Hi Peter, > > From: Peter Cramer > > I have a very basic question about qgis features. Thanks in advance for > any answers. > > > > The scenario is that we need to geo locate 6,000 machines in various > locations throughout Australia. > > I person will be onsite at each machine in the exact