Re: [Qgis-user] Compressing rasters in geopackage?

On 4/7/2021 7:59 PM, Nicolas Cadieux wrote: Hi, This is from an earlier email exchange. It may help.  Look for « Geopackage file data loss issue » in the mailing list. Thanks for the pointer and the information. I had done some more reading

[Qgis-user] Compressing rasters in geopackage?

. I tried doing an "export" of the layer to a geopackage (as opposed to dragging it into the geopackage in the file browser pane), but the only available profile under Create Options is "default". Do I need to type compression options explicitly?

Re: [Qgis-user] Fill-down with QGIS expressions

On 3/28/2021 2:05 PM, Alexandre Neto wrote: Sorry, Can you be more clear? It's not clear to me what you are trying to accomplish. Here's some sample data he posted on Github:

Re: [Qgis-user] Building 3D from SRTM or DEM

On 3/26/2021 1:40 PM, jean Lukusa wrote: Hi all , Can you help how to build 3D from 2D data including SRTM or DEM Not sure exactly what you're trying to achieve, but the qgis2threejs plugin might be what you want.

Re: [Qgis-user] First steps with 3D Scan Data?

l, but fun (and pretty incredible). Good Luck, David On 3/25/2021 5:07 PM, Bernd Vogelgesang wrote: Hi folks, in a project on a former dumpside now to be transformed into a sand lizard habitat, I saw the chance to get my hands dirty for the first time on 3D scan data (terrestrial). I rec

Re: [Qgis-user] Map styles changing when I export as image

and stop working.  Apparently I had too little RAM (8 gigs) - I added 16 more and all is working fine now.  It took a long time to resolve as I was looking at software and settings and it was actually my hardware/system being overwhelmed.  Just a thought. David On 3/21/2021 4:47 AM, jeremy

Re: [Qgis-user] How to filter expression in aggregate

On 3/14/2021 5:28 PM, Andrea Giudiceandrea wrote: David Strip-4 wrote aggregate( 'B','sum', "Confirmed", "Country_Region"  ILIKE attribute($currentfeature, 'SOVEREIGNT')) Hi David, in the filter the source fea

[Qgis-user] How to filter expression in aggregate

A with the _expression_ aggregate( 'B','sum', "Confirmed", "Country_Region"  ILIKE  attribute($currentfeature, 'SOVEREIGNT')) but the value is always zero. What am I not understanding? Thanks David _

[Qgis-user] Nodata pixels in the raster calculator

It appears to me that the raster calculator treats a nodata pixel the same as any other pixel, performing the requested operation on the nodata pixel as if it were a valid value. In addition, it appears that there is no way to create an output raster that has a nodata

Re: [Qgis-user] Problem running GRASS r.lake from Qgis

I ran the same data in QGIS 3.10.5 and it ran without problems. On 2/24/2021 3:51 PM, David Strip wrote: Qgis 3.16.2, GRASS 7.8.4, Win 10. I'm attempting to run the r.lake processing algorithm. If I select "Temporary layer"

[Qgis-user] Problem running GRASS r.lake from Qgis

evation' : 'C:/Users/David/Documents/Geodata/Topo maps/Abiquiu/USGS_13_n37w107.tif', 'lake' : 'C:/Users/David/Documents/Geodata/geoTemp/lake2.tif', 'seed' : None, 'water_level' : 2500 } I've run this with the original input file in EPSG:4269, and against the same file converted to

Re: [Qgis-user] How to limit number of "Recent Projects" listed - Correction

If you just want to hide the recent projects on the opening screen, go to Settings->General->Project Files and select something other than "Most Recent" "Welcome Page". If you still want a list of recent projects, but a shorter list, go to

Re: [Qgis-user] How to limit number of "Recent Projects" listed

If you just want to hide the recent projects on the opening screen, go to Settings->General->Project Files and select something other than "Most Recent". If you still want a list of recent projects, but a shorter list, go to Settings->Advanced and search

Re: [Qgis-user] Lat Lon Tools question

On 2/6/2021 11:33 AM, chris hermansen wrote: Your lat long 35,-106 are far west in the northern hemisphere. Therefore the UTM zone is 13N not 13S. This is somewhere near Memphis Tennessee if I am not wrong.

Re: [Qgis-user] [QGIS-Developer] New QGIS Date/Time Tools Plugin

On 1/28/2021 11:10 AM, C Hamilton wrote: In thinking about it, if the data set is too large to include with QGIS, it might be worth having a simplified geometry data set included and if the user wants more precise data then they can download it and

Re: [Qgis-user] How do I achieve this symbol effect?

On 1/24/2021 9:34 AM, Charles Dixon-Paver wrote: I can think of 2 easy ways to do this (if I understand the requirements correctly), using either rule based rendering, or the geometry generator on with stacked symbols. I imagine rule based

[Qgis-user] How do I achieve this symbol effect?

To highlight a specific polygon I'm using the drawing effects to translate and drop shadow as the styling for a single polygon in the layer by using categorized symbology. So far, so good. But what I really want is this, where the place the original polygon is

Re: [Qgis-user] saving all temporary layers?

On 1/21/2021 10:13 PM, Michael Dufty wrote: Not exactly what you are asking for, so it may not suit, but I find the “memory layer saver” plugin invaluable. When using this memory layers are not lost when you close QGIS

[Qgis-user] saving all temporary layers?

Before I write my own, does anyone have a script to share (processing or otherwise) that saves all temporary layers in a project, preferably to a geopackage? Thanks David ___ Qgis-user mailing list Qgis-user@lists.osgeo.org

Re: [Qgis-user] How to use QgsProcessingLayerPostProcessorInterface?

On 1/20/2021 5:25 PM, Etienne Trimaille wrote: Can you try that? class Renamer(QgsProcessingLayerPostProcessorInterface): instance = None def postProcessLayer(self, layer, context, feedback): layer.setName('DiffLayer')

Re: [Qgis-user] how to find center of polygons and/or major and minor diameters

Azzurra, Two other methods to try are: Point on surface Pole of inaccessibility Both found in the Processing Toolbox David On 1/12/2021 2:13 PM, Brent Wood wrote: This may be a suitable approach, not specifically the ellipse axis approach, but: Vector -> Geometry tools -> Ce

Re: [Qgis-user] How do I clean up this geometry?

the problems and there are too many, you could build the polys from lines. If the lines are correct, the polys created from them will be clean. David On 1/8/2021 3:28 PM, qgis-u...@stripfamily.net wrote: This linked <https://drive.google.com/file/d/1o1KthonUPSZGWp6QImS9btbj799Lv-om/view?

Re: [Qgis-user] Does QGIS3 freezes more often than QGIS2 ?

I used to get a lot of similar freezes on QGIS 3. It was traced to the browser window being full of files that I never would use for QGIS. So if your browser window within QGIS has a lot of irrelevant stuff, you could try clicking on each one and selecting, "Hide from Browser" option. This should

Re: [Qgis-user] automatic data entry

I typed "closest" into the search box (bottom left of screen), and saw the processing algorithm  "Join Attributes By Nearest" .  It may be worth looking into. Thanks, David On 9/17/2020 7:07 AM, Nicolas Cadieux wrote: Hi, You could make a 25m buffer and then

Re: [Qgis-user] Field Calculator Expression

ed. ELSE result- If none of the above conditions evaluated to True then resultis evaluated and returned. Example CASEWHEN "ID" = 1 THEN 'Yellow' WHEN "ID" = 2 THEN 'Green'END Hope this helps, David On 8/17/2020 7:20 PM, krishna Ayyala wrote: I have the following attr

Re: [Qgis-user] Plugin repository availability for 2.x

@lists.osgeo.org Subject: Re: [Qgis-user] Plugin repository availability for 2.x On 8/7/20 3:44 PM, David Hill wrote: > Hi > > Is anyone else getting an unavailable status for the 2.x Official Plugin > Repository? > > The repository for 3.x appears to be ok. Currently work

[Qgis-user] Plugin repository availability for 2.x

Hi Is anyone else getting an unavailable status for the 2.x Official Plugin Repository? The repository for 3.x appears to be ok. Regards DH ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info:

Re: [Qgis-user] Closest Distance of a point within a polygon to the closest part of that polygon and the name of the adjacent polygon with the common boarder

Hi I have a challenge. I have 2 vector data sets. One is point vectors (Occurrence of a soil fungus Pc at a point +red with a year of sampling as a label) and polygon vectors that show the various surface geologies in an area ( the name is on the boundary (purple) Inside of the

Re: [Qgis-user] colorramp starting from white

data values, you could leave it as white/green and then set the screen/page background color to something other than the default white.  Go to Project-Properties and then Background Color. David On 6/15/2020 10:50 AM, Seggie, Graeme wrote: Would adapting and using this code help at all

Re: [Qgis-user] split polygon with lines seems not working correctly

Luigi, I see the problem now, I would suggest: 1. Polygons to Lines (on the Buildings layer) 2. Merge vector Layers (lines-from-buildings, and line layer) 3. Polygonize (merged layer) 4. Join Attributes from Location (New polygons, building layer) (Geometric predicate = within) David

Re: [Qgis-user] split polygon with lines seems not working correctly

Luigi, The lines must fully transect the polygon in order to split.  The dotted lines in the image are examples of such lines. Hope this helps, David On 6/10/2020 11:31 AM, Luigi Raffaele Sapone wrote: Hello I’m using QGIS 3.12 I have a poly shapefile named building.shp in the zip file

[Qgis-user] Geometry Generator - Generating buffered points from polys

Hi, I am working through an exercise to figure out the best way to represent some wooded areas in a map that I am making. The current iteration uses geometry generators to create slightly randomized points to fill the polygons that represent wooded areas. I based it off of the great examples at

Re: [Qgis-user] geometry generator - unexpected results

26915 (UTM Z15N), and since both SRS are in meters, I thought that similar values would work. I had tried to change the params in the functions by an order of magnitude, but obviously needed to go farther. Thank you again for your help. David. On Fri, Apr 17, 2020 at 5:05 AM Michel Stuyts wrote

[Qgis-user] geometry generator - unexpected results

) ) Here is an image of what the results look like: https://github.com/fawcett/examples/blob/master/lines.png The line geometries are in blue, and the geometry generator output is in black. Can anyone suggest what is going wrong? Thank you, David. ___ Qgis-us

[Qgis-user] (no subject)

Hi, I am using qgis 3.12 and i am no longer able to access the properties of my layers. Is there anybody who had this problem? I tried uninstalling everything, but it did not work, im kind of blocked right now. Any help would be appreciated, Have nice day, David

[Qgis-user] QGIS windows problem

I have an odd problem with the 64-bit version of QGIS, version3.10.4-A Coruña. Once I load QGIS, its window occupies the entire screen, but it's more than merely maximized. There is no task bar at the bottom, and there are no Maximize/Minimize/Close buttons. I cannot grab the edges of the

Re: [Qgis-user] QGIS 3.10 not responding

I used to have this problem but this now seems to have gone away, when a solution was suggested on this forum. The solution was that the browser panel was full of discs and files that had nothing to do with QGIS. Right click in the QGIS browser and select "Hide from browser" everything that you

[Qgis-user] Scalebar issues on QGIS 3.10.2

I am making maps using OSGB36 which is 27700 CRS. My issue comes when I use the Print Layout option. In one case the Print Layout simply did not draw a scalebar, but left a pair of dotted lines on the layout. So I left it out. In another case the scalebar was drawn but the scale of kilometres was

Re: [Qgis-user] QGIS 3.10.1A Geotiff Coordinate Transform Problem

I just downloaded and opened the new QGIS version 3.10.2 and clicked on Help/About which gives a list of all the installed bits and pieces. This release of Version 3.10.2 will still probably be no good for transforms as it still apparently includes the buggy PROJ 6.2.1 and GDAL 3.0.2. I thought

Re: [Qgis-user] QGIS 3.10.1A Geotiff Coordinate Transform Problem

I can confirm that if you use the Windows 10 package, then the CRS procedures are completely full of bugs on point release 3.10.1. I get terminal issues with the transform from WGS84 to OSGB 36, the standard National Grid here in the UK. Try the next point release 3.10.2 due any day now, which

Re: [Qgis-user] QGIS 3.4.2 & 3 still very slow to work in Windows 10

Many thanks to Micha Silver -2. I have found that hiding directories from the browser has apparently stopped all my issues with " Qgis not responding" hangups. I have got all my QGIS projects on one hard drive so I have hidden everything but that drive, including hiding the C drive. Windows seems

[Qgis-user] Change language setting

an application restart. The issue is that It doesn't give ant option to run the application, nor is telling me which application. Any suggestion is very welcome! I downloaded version qgis 3.10.1 . Many thanks in advance. David ___ Qgis-user mailing list

Re: [Qgis-user] QGIS 3.4.2 & 3 still very slow to work in Windows 10

Just to update this issue. I am still getting slow start ups and qgis not responding freeze ups just as bad on QGIS 3.8.3. Every version since 3.4.1 have given these problems. I have gone through all the files from old versions that I could find and deleted them. I have tried new profiles,

Re: [Qgis-user] Loss of scale after clipping

Hi Nick, I thought you were onto something with that suggestion of incompatible CRS settings. The coastal file that I had clipped came from a MapInfo source and the CRS was interpreted by QGIS as a custom CRS rather than as EPSG 27700. Although the MapInfo CRS was meant to be the GB National Grid.

Re: [Qgis-user] Loss of scale after clipping

Oh Dear, I have just tried to follow the tip from Nicolas above about reloading files into a new empty project. This time this does not work. I have just loaded a county outline and a coastal line with default styling and the scale bar still says 0:1. Now What? Any ideas? Regards to all. NB QGIS 3

Re: [Qgis-user] Loss of scale after clipping

This scale problem has just raised its head again in a different context. I have been experiencing the 40 second loading time which a few other people have also reported, ever since 3.4.1, when this all started. In addition I often get QGIS not responding messages most often when clicking on

Re: [Qgis-user] Loss of scale after clipping

t, it does seem to have worked. So thanks very much for that advice. I wonder what action set it off though? Best wishes and many thanks, David" I thought I would post this exchange so everyone else can get the benefit of this work around. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGI

Re: [Qgis-user] Loss of scale after clipping

I have clipped rasters and vector files many times before with no problems. Go to Raster/Extraction/Clip raster by mask layer. The mask layer is something I draw. IE Make new vector polygon, add feature and then draw a box around the area I want to include in my clip. -- Sent from:

[Qgis-user] Loss of scale after clipping

I am finding that after clipping a raster the resulting clipped file has no scale. Or rather the scale says 0:1 and stays at 0:1 whatever the zoom level. This persists for all the map, whatever layers are on or off. Can anyone help, please? I am running 3.8.3 on Widows 10. -- Sent from:

Re: [Qgis-user] Qgis-user Digest, Vol 158, Issue 11

FYI -Mensaje original- De: Qgis-user En nombre de qgis-user-requ...@lists.osgeo.org Enviado el: martes, 9 de abril de 2019 21:00 Para: qgis-user@lists.osgeo.org Asunto: Qgis-user Digest, Vol 158, Issue 11 Send Qgis-user mailing list submissions to qgis-user@lists.osgeo.org To

[Qgis-user] QGIS 3.4.4 still giving delays and “not responding” issues on Windows 10

I did love using QGIS until 3.4.1 came along. Ever since I have been plagued by the “Not responding” message and very slow start up. (See my previous posts “QGIS 3.4.3 becoming unusable for me on Windows 10,” and “QGIS 3.4.2 still very slow to work in Windows 10”) However, when it came to 3.4.4 it

Re: [Qgis-user] QGIS 3.4.3 becoming unusable for me on Windows 10

Thanks for the advice fellas. Unfortunately being an end user, I never usually delve into the guts of QGIS. Advice received is : "Can you try to start QGIS with the following options: qgis --noversioncheck --noplugins --hide-browser " I have discovered the option to 'Check version no on

[Qgis-user] QGIS 3.4.3 becoming unusable for me on Windows 10

Ever since release 3.4.1 QGIS has been a disaster for me, running on Windows 10. After I upgraded to 3.4.2 I still had problems with everything running very slowly. (See my post below - QGIS 3.4.2 still very slow to work in Windows 10 by David Addy) Now on 3.4.3 the same issues seem

Re: [Qgis-user] QGIS 3.4.2 & 3 still very slow to work in Windows 10

Unfortunately these slow responses continue into 3.4.3 with no improvement. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info:

Re: [Qgis-user] QGIS 3.4.2 still very slow to work in Windows 10

Hi Alberto, Startup time with a blank project is 30 seconds here with Kaspersky security ON. With Kaspersky turned off, start up time is still 28 seconds - barely any difference. Kaspersky is generally known for being a quite low overhead. -- Sent from:

Re: [Qgis-user] QGIS 3.4.2 still very slow to work in Windows 10

Hi Nyall, In answer to your query, all my files are held on my desktop PC, with specs as follows: CPU: Intel Core i7-4790K GPU: Nvidia Quadro K2200 SSD: Samsung 840 Evo 250GB HDD: Seagate Barracuda 7200.14 2TB HDD: Seagate Barracuda 7200.14 2TB USB: WD My Book 1230 4TB RAM: Corsair

Re: [Qgis-user] QGIS 3.4.2 still very slow to work in Windows 10

Hi Nyall, Thanks for your additional comment. When I was autoloading my most recent project at startup QGIS was taking up to a minute to open itself and load the project. Other saves and actions like opening a layer attribute table were also very slow. After changing my settings to open with a new

Re: [Qgis-user] QGIS 3.4.2 still very slow to work in Windows 10

Thanks to everybody, but to Anita and Nyall in particular, for your comments. It is very helpful to know that my issues are just minor quirks rather than a more serious flaw. QGIS 3 is definitely a big leap forward and I can now plough onwards with these reassurances. I would rather avoid going to

Re: [Qgis-user] QGIS 3.4.2 still very slow to work in Windows 10

Hi Patrick, Thanks for your comments. It all helps to encourage me. I have now discovered that the User Manual (development version) emphasises the fact that there are changes to the node tool in version 3, and how the dragging of the old method is now replaced by two clicks. Anita's book does not

Re: [Qgis-user] QGIS 3.4.2 still very slow to work in Windows 10

Thanks for all your comments. I think things were pretty good using 3.2, and I had got used to using Version 3 with geopackage etc, and going back to 2.18 was rather painful for me. These hanging up problems for me really started in 3.4. I have just found that changing my Settings to make QGIS

[Qgis-user] Best Tablet Options for GIS Fieldwork with Students

. -- David Gwenzi Assistant Professor Environmental Science and Management Humboldt State University 1 Harpst st Arcata, CA 95521 *707-826-3825* ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] QGIS 3.4.2 still very slow to work in Windows 10

I have always loved QGIS and I have extolled its virtues to local historians and archaeologists in my area. I have had to keep quiet about it lately. I was somewhat relieved to hear a comment on a recent video of the Oceania meeting that QGIS 3.4.1 was a dud release as it caused Windows to crash

Re: [Qgis-user] extract Z value along line

Thanks, Nyall. I thought GRASS should have it, but apparently my search-fu was weak. David On Sun, Jul 22, 2018 at 6:26 PM Nyall Dawson wrote: > On Sat, 21 Jul 2018 at 22:52, David Fox wrote: > > > > Is anyone aware of a workflow to extract Z values from a raster

[Qgis-user] extract Z value along line

Is anyone aware of a workflow to extract Z values from a raster along a line -- essentially point sampling but at nodes? Cheers, David ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] Converting X Y Coordinates to Latitude/Longitude

the rectified map as a way to geotag historic photographs of particular buildings. Is there a way to convert the coordinates in a continuous fashion for the entire region? Thanks for your help. Dave Hochfelder David Hochfelder Associate Professor History Department Social Science 060B University

Re: [Qgis-user] QGIS 3 clipping raster with a polygon - problem

I have upgraded to 3.0.3 and tried to clip another file. Oh Joy! It worked. However I was a bit disconcerted by the GDAL readout at the bottom of the box which described output to a temp file even though I had specified a new filename and location. However, the new file name was actually applied.

Re: [Qgis-user] QGIS 3 clipping raster with a polygon - problem

In case it helps, here is a screengrab of the QGIS 3 input box. There are no spaces in my file names. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___

Re: [Qgis-user] QGIS 3 clipping raster with a polygon - problem

Hi Nyall, Thanks very much for looking at this. The two versions are as follows: From QGIS 2.18.16 I get: gdalwarp -q -cutline "D:/My Pictures/QGIS Projects/Payne calibration/payne_clipper.shp" -tr 0.639640252898 0.639640252898 -of GTiff "D:/My Pictures/QGIS Projects/Payne

Re: [Qgis-user] QGIS 3 clipping raster with a polygon - problem

I have had another go with another dataset. I have tried both these algorithms in QGIS 3.0.2: 1. Gdal ->" Raster extraction" -> "Clip raster by mask layer" 2. Saga -> "Vector <-> raster" -> "Clip raster with polygon" Both give an error message. In the case of GDAL it is :"GDAL command

[Qgis-user] QGIS 3 clipping raster with a polygon - problem

I have always been able to clip a raster using the mask made by drawing a polygon around the required area in QGIS 2. However, in QGIS 3 the process does not work the same way. I cannot figure out how to make a new output file, and whatever I try results in no comprehensible output. I have just

Re: [Qgis-user] QGIS 3 OS X/macOS

Thank you William! You provide a very valuable services for all of us who do GIS on a Mac. David. On Tue, Mar 13, 2018 at 9:21 PM, Madry, Scott <mad...@email.unc.edu> wrote: > Scott Madry > > and just FYI, I had to load matplotlib and scipy to get the Semi Automatic > Cla

[Qgis-user] QGIS 3 initial settings from QGIS 2

I was pleased to download QGIS3 last night, and I clicked on the option to include my existing settings from QGIS2. However, when opening Q3 it seemed to be in the full naked default situation. There were no "Recent Projects" and my local CRS was not set to OSGB 36. The CRS is easily corrected of

Re: [Qgis-user] Mac OS X building QGIS 3 dev on a clean machine!

to keep reinventing. If you're starting from scratch, I'd give macports a try. If you run into a problem, submit a detailed bug report; you might for instance catch dependencies Vince missed. David On 2/26/18 12:32 PM, John Harrop wrote: Hello all, After spending my spare time trying to get

Re: [Qgis-user] style from file

On 02/21/2018 11:16 PM, Stefan Giese wrote: yes, you can. Save the style in the same directory as foo.qml. Am 22.02.2018 um 02:25 schrieb David J. Bakeman: Can I make it so that every time I load

[Qgis-user] style from file

Can I make it so that every time I load a shapefile named foo.shp it gets a particular style? ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe:

Re: [Qgis-user] Mac OS X testing for QGIS 3

off backing out of MacPorts and pinging the HomeBrew developers for an up-to-date version. Best wishes, David On 2/15/18 12:26 PM, John Harrop wrote: FYI. I did fix one of the problems below by adding

Re: [Qgis-user] Mac OS X testing for QGIS 3

installation, with GNU tools switched to MacPorts: # MacPorts Installer adding an appropriate PATH variable for use with MacPorts. export PATH=/opt/local/bin:/opt/local/sbin:/opt/local/libexec/gnubin/:$PATH Cheers, David On 2/14/18 12

Re: [Qgis-user] Mac OS X testing for QGIS 3

Vincent at Macports has done a great job packaging qgis3, cf. https://trac.macports.org/ticket/55020 grass7 was just upgraded to 7.4, postgresql10 to 10.2. qgis3 is at 20180124. Cheers, David On 2/14/18 11:18 AM, Madry, Scott wrote: Hi all. As a dedicated Mac QGIS user, trainer

[Qgis-user] How to generate intersect areas properly in QGIS with use of Grass v.overlap?

Give two vectorised area data sets,  How to generate intersect areas properly in QGIS with use of Grass v.overlap? Regards, David___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] Problems with Intersection by using Grass's v.overlay

I encountered following problems with Intersection by using Grass's v.overlay. I used 2 vector area maps to create a new map through intersection (or option used). The number of new polygonal areas of the output each time is different.    Inconsistent output. I kept encountering Error 6:  Failed

Re: [Qgis-user] Why does this message keeps occuring in QGIS? GEOS geoprocessing error: One or more input features have invalid geometry.

Dear Kirk, Thanks. I will try it out. It is not merge.  I am trying to intersect two vector ShapeFiles.  Each contains a collection of polygons.  Each collection of polygons cover the same geography, but has different boundaries. Can I do that? Regards, David On Tuesday, 16 January 2018

Re: [Qgis-user] Why does this message keeps occuring in QGIS? GEOS geoprocessing error: One or more input features have invalid geometry.

Hi, Kirk, To make it simple, how to convert all polygons into simple polygons? Regards, David On Tuesday, 16 January 2018, 14:09, Kirk Schmidt <k...@nortekresources.com> wrote: This usually occurs when you try to merge features that are mixed single and multipart lines or po

[Qgis-user] Why does this message keeps occuring in QGIS? GEOS geoprocessing error: One or more input features have invalid geometry.

How to resolving this issue? Regards, David ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] Areal Interpolation in QGIS

Is there any Areal Interpolation code in QGIS? Regards, David ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Cool Features of QGIS

geometries on the fly adds even more. David. On Wed, Dec 6, 2017 at 1:41 PM, Kurt Menke <k...@birdseyeviewgis.com> wrote: > I wrote a blog post this spring called At Least 10 Reasons You Should Be > Using QGIS > <https://www.birdseyeviewgis.com/blog/2017/5/1/at-least-10-

Re: [Qgis-user] Cool Features of QGIS

Thomas fire: http://www.arcgis.com/apps/webappviewer/index.html?id=38af98f710d94937a61eb0789211de54=-13300913.7226%2C4058500.9782%2C-13244273.8846%2C4095725.811%2C102100 On 12/5/17 4:59 PM, Clifford Snow wrote: I'm doing a short presentation on Open Source GIS software this Friday. My

Re: [Qgis-user] How do I update attribute values in a composer attribute table?

This was my error - the table was reading from a different (merged) .shp file. DOH! Original Message Subject: Re: [Qgis-user] How do I update attribute values in a composer attribute table? From: David Gessel <ges...@blackrosetech.com> To: Andreas Neumann &

Re: [Qgis-user] Compiling QGIS3 with grass7 from MacPorts

:50, David Liontooth wrote: INSTALL says this under the OS X section:     Also available is a GRASS application:     http://www.kyngchaos.com/software/grass -- though it turns out that page is for Grass 6; for Grass 7 that page in turn points to http://grassmac.wikidot.com. Grass 6 is no longer

Re: [Qgis-user] Compiling QGIS3 with grass7 from MacPorts

QGIS, just not the unrealeased QGIS3. Cheers, Dave On 9/28/17 6:14 PM, Patrick Dunford wrote: Ok, I'm not familirar with a separate build step, don't remember seeing that in the install documentation, unless that is a specific variation for your platform? On 29/09/17 14:12, David Liontooth w

Re: [Qgis-user] Compiling QGIS3 with grass7 from MacPorts

Grass so I don't see how it would not be included in the same scripts for the platform you are using. Are there any error logs for building the plugins that will show what is happening for example the library is not found or wrong version? On 29/09/17 13:12, David Liontooth wrote: I'm

[Qgis-user] Compiling QGIS3 with grass7 from MacPorts

I'm interested in reading LIDAR data, which appears to require GRASS (I'm new to this). I'm trying to compile QGIS2.99 (master) on OS X and short of GRASS everything is working -- the program starts up with     open QGIS MacPorts has gdal-grass @2.2.0 (gis), which pulls in grass7. It ends

Re: [Qgis-user] How do I update attribute values in a composer attribute table?

values in a composer attribute table? From: David Gessel <ges...@blackrosetech.com> To: Andreas Neumann <a.neum...@carto.net>, qgis-user@lists.osgeo.org Date: Wed Sep 27 2017 22:19:02 GMT+0300 (AST) > I don't have other versions, but I'm happy to submit a bug report. > > I'll

Re: [Qgis-user] How do I update attribute values in a composer attribute table?

tribute table also has stale data. Original Message Subject: Re: [Qgis-user] How do I update attribute values in a composer attribute table? From: Andreas Neumann <a.neum...@carto.net> To: qgis-user@lists.osgeo.org Date: Wed Sep 27 2017 17:58:40 GMT+0300 (AST) > Hi D

[Qgis-user] How do I update attribute values in a composer attribute table?

in composer? Do I need to delete all tables and recreate them every time the underlying field values change to get them to update? I also posted this question to https://gis.stackexchange.com/questions/256761/how-do-i-update-attribute-values-in-a-c

[Qgis-user] How to find postgresql linked libraries to build QGIS2.99 on OS X

/09/17 21:02, David Liontooth wrote: Thanks, Patrick! I also run a Debian server and checked dependencies there; QGIS2 does not require postgresql. On my mac laptop, I'd rather not install postgresql -- it's

[Qgis-user] How to disable postgresql in the build of QGIS2.99

rather avoid the clutter. So I'm just looking for a way to turn off postgresql in the build of QGIS2.99. I tried adding this to David Marteau's makefile:     -DWITH_POSTGRESQL=FALSE \ But it's not turning off postgresql. testqgspostgresprovider.cpp

Re: [Qgis-user] Building QGIS3 for OS X with MacPorts

est release, you can get older ones if you know the commit ID On 21/09/17 05:51, David Liontooth wrote: I followed David Marteau's very helpful instructions for building QGIS3 at https://www.3liz.com/blog/rldhont/index.php?post/2017/06/01/How-to-build-qgis-on-OSX-with-MacPort, on a

Re: [Qgis-user] Building QGIS3 for OS X with MacPorts

the commit ID On 21/09/17 05:51, David Liontooth wrote: I followed David Marteau's very helpful instructions for building QGIS3 at https://www.3liz.com/blog/rldhont/index.php?post/2017/06/01/How-to-build-qgis-on-OSX-with-MacPort, on a Sierra O

[Qgis-user] Building QGIS3 for OS X with MacPorts

I followed David Marteau's very helpful instructions for building QGIS3 at https://www.3liz.com/blog/rldhont/index.php?post/2017/06/01/How-to-build-qgis-on-OSX-with-MacPort, on a Sierra OS X with all updates and a current MacPorts installation. I needed to add these dependencies

Re: [Qgis-user] Exporting Raster layer to text file

. Any suggestions about what I am doing wrong? Cheers David Reid From: Matt Boyd [mailto:mattsli...@gmail.com] Sent: Friday, 15 September 2017 3:28 PM To: David Reid <davidreid6...@gmail.com> Cc: qgis-user <qgis-user@lists.osgeo.org> Subject: Re: [Qgis-use

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