Re: [QGIS-Developer] Processing 3.0: Possible change to the Convex Hull algorithm

Hi, I also think that the logical solution would be to aggregate the attributes when grouping and allow the user to specify which aggregate function to use for each attribute. Just randomly using the attributes of the first feature doesn't really makes sense to me. In 99% of the Now that we

Re: [QGIS-Developer] QGIS project XSD

On 30 June 2017 at 19:39, G. Allegri wrote: >> Seems like a huge amount of administrative overhead to me. A small >> change to the project format could result in massive amounts of >> required changes to the xsd. >> >> Given that now it's safe to have multiple QgsProjects at

Re: [QGIS-Developer] QGIS project XSD

On 06/30/2017 11:32 AM, G. Allegri wrote: > Normally you start with a schema, and from that create xml. To me it > sounds pretty hard to keep a schema updated the other way around? As the > api can always add new/changed parts of xml in it? > > > Even QgsProject won't know if a

Re: [QGIS-Developer] QGIS project XSD

(I havent followed the work on QVariantMaps, I will give it a look). Nyall, I know that to make it error free and mantainable, we will need some sort of metadata, which would require some work both to set it up and mantain it. This dicussion starts from the benfits of having a schema. If the most

Re: [QGIS-Developer] Processing 3.0: Possible change to the Convex Hull algorithm

If you read above, the idea is to set fields *other then the ones selected for grouping* null. So it wouldn't pick the first one, which is meaningless. Having aggregate functions to be applied to single non-grouping fields could be a great plus, keeping the option to leave the field set to null.

[QGIS-Developer] QGIS project XSD

Hi everybody, I know this has been discussed in the past, and maybe I missed more recent discussions, but I think this is a point that should be considered. Working a lot with QGIS projects parsing and processing, we have to rely on trials and errors to validate a QGIS project and create test

Re: [QGIS-Developer] QGIS project XSD

> > Seems like a huge amount of administrative overhead to me. A small > change to the project format could result in massive amounts of > required changes to the xsd. > > Given that now it's safe to have multiple QgsProjects at once, > couldn't you instead just load the project and retrieve the

Re: [QGIS-Developer] QGIS project XSD

Hi Giovanni, On 06/30/2017 10:35 AM, G. Allegri wrote: > Hi everybody, > I know this has been discussed in the past, and maybe I missed more > recent discussions, but I think this is a point that should be considered. > > Working a lot with QGIS projects parsing and processing, we have to rely >

Re: [QGIS-Developer] QGIS project XSD

On 30-06-17 10:45, Matthias Kuhn  wrote: > Hi Giovanni, > > On 06/30/2017 10:35 AM, G. Allegri wrote: >> Hi everybody, >> I know this has been discussed in the past, and maybe I missed more >> recent discussions, but I think this is a point that should be considered. >> >> Working a lot with

Re: [QGIS-Developer] QGIS project XSD

> > Normally you start with a schema, and from that create xml. To me it > sounds pretty hard to keep a schema updated the other way around? As the > api can always add new/changed parts of xml in it? > Yes, that's hard, but it's quite odd to have a project serialization format (in this case XML)

Re: [QGIS-Developer] QGIS project XSD

On 30 June 2017 at 18:35, G. Allegri wrote: > > Hi everybody, > I know this has been discussed in the past, and maybe I missed more recent > discussions, but I think this is a point that should be considered. > > Working a lot with QGIS projects parsing and processing, we

[QGIS-Developer] GDAL Support For PostGIS Out-DB Rasters

Hi All, Currently, QGIS-GDAL seems to be only able to display rasters that are stored in the database as it displays a black image for PostGIS Out-DB rasters as described in my post in the link below: http://osgeo-org.1560.x6.nabble.com/QGIS-GDAL-OUT-DB-RASTER-SUPPORT-td5318735.html *Please, I

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[QGIS-Developer] parameter infos algorithm of Processing with python

Hi devs, I'm making some test with Processing. I have a quick question: is there a method to know (via python) the parameter of an algorithm? To get one algorithm available as an object, I do: import processing # get an algorithm of the qgis provider, no matter which one alg = qgis_list =

Re: [QGIS-Developer] native XYZ layers - zoom level

Fasiha I used the following steps : - open the qgs project (xxx.qgs file) in a text editor - find the layer definition (you can search for the URL you entered) - add =17=22 to the URL There are probably ways to add the parameters directly in the layer definition in the brower, which is stored

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