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Questions tagged [qgis-3.2]

For questions about version 3.2 "Bonn" of QGIS.

-4
votes
2answers
51 views

Getting error in heat map using QGIS?

I need to make a color map, but I'm not allowed to do it because in the "radio" field I get a warning that says: Distance is in geographic degrees, consider reprojecting a local coordinate system ...
2
votes
1answer
24 views

QGIS 3.2 Layout Map render/cache/rectangle no longer available

In previous version of QGIS when using the print composer there was an option to have the map dispalyed as a rectangle, cached or render. This was particularly useful when the map showed lots of ...
0
votes
0answers
36 views

Distance calculation with v.net.path in QGIS 3.2

I have 3 layers: origin and destination point shapefiles and network line shapefiles. I want to calculate the shortest path on the network between the origin (250 features) and destinations (20 ...
0
votes
1answer
9 views

Geodata farm plugin error

When i try to start GeoDataFarm Plugin in QGIS i get this error : "2018-11-26T08:32:18 WARNING Traceback (most recent call last): File "C:/Users/robert.banjad/AppData/Roaming/...
0
votes
0answers
34 views

How to stop labels disappearing in QGIS 3?

I have read numerous questions threads about why labels are not appearing, however they are not applicable for QGIS 3. Is there a bug with labels in QGIS 3? I have mapped some locations. I have then ...
0
votes
0answers
15 views

Draw a shape using dimensions using advanced digitizing tools [duplicate]

Does anyone know how to draw a shape by area. I need to draw a survey area of 3.58km x 3.0km. I have added the Advanced digitizing toolbar --> selected toggle edit --> created new polygon however... ...
0
votes
0answers
13 views

Running parallel jobs with QGIS and scikit-learn

The code below is meant as a naive introduction to machine learning for geography students. The idea is just to load some images and then run them through some scikit-learn classifiers. This is ...
3
votes
1answer
50 views

Access the array of a loaded layer in QGIS3 with pyQGIS

The code below is a clunky attempt to get a raster numpy array loaded up for basic machine learning from the QGIS Python console. It usually works but has stability issues with the GetRasterBand() ...
0
votes
0answers
16 views

pyQGIS : Different behaviours when trying to access a raster array on stand alone Win10 vs Network win 10

I have a naive bit of core for students as below. Idea is to open images and run some basic machine learning on the imageStack variable produced at the end of the snipet. Sklearn is installed and ...
5
votes
0answers
91 views

QGIS versions yielding different results on $area calculations?

When grading an exam, I discovered that QGIS 3.2 and 3.4 produce different values on computing $area over polygons. I experimented using $area and area($geometry) to check the differences between ...
3
votes
1answer
110 views

Batch distance calculation with v.net.distance

I have three shapefiles: one containing destinations the second containing postcodes the third containing the road network I want to calculate the distance between the postcodes and destinations ...
0
votes
2answers
21 views

Merge only lines that they are touches on QGIS 3.2.3 and create a shapefile output with the result

I have a project with five lines, every element have a different ID. This is view below: I want to merge only lines that there are touching. According with this conditions the lines they should ...
0
votes
0answers
22 views

Guide to GRASS v.net GUI use

I have a road network layer and a postcode layer. My aim is to create an isochrone map where I can show the travel time to each point, using v.net.iso. These points are not on the network therefore I ...
3
votes
1answer
52 views

Processing Script Editor shows spaces as tabs

I'm using the processing script editor in QGIS 3.2 (Bonn). The display is messed up. Spaces are shown as tabs and there is a random tab in between a name and the () to run a command. As a consequence, ...
2
votes
2answers
34 views

Heatmap-no data vs Zero

I am new to QGIS. I am working on creating heat map of bird diversity(data downloaded from ebird.org). The issue I face is that how to differentiate between: There areas where data is not available (...
1
vote
2answers
38 views

GRASS v.net.iso tool produces empty output - QGIS 3.2.2

I want to split a network shapefile by cost isolines. I have two layers a point layer (with 297 records) a road network layer Every time I run the GRASS v.net.iso module in QGIS 3.2.2 on the road ...
3
votes
1answer
71 views

Moving node in QGIS?

I am trying to move a vertex in QGIS 3.2. I can select nodes in QGIS 3.2 (which show up blue), but every time I try to move it with the node tool it just deselects the vertex. How do I move a node ...
4
votes
1answer
86 views

Using azimuthal equidistant projection with buffers in QGIS?

I am a journalist. My goal: A globe that shows the range ok North Koreas ICBMs - the azimuthal equidistant projection centered on NK. My steps so far: Created Standard QGIS project (EPSG:4326) ...
0
votes
1answer
246 views

How to exclude one specific polygon from a layer which have like 20 diffirent polygons? [closed]

I have a layer with like 20 polygons which I imported from Google Earth Pro. And what I am trying to do is to exclude (isolate) that one big polygon which is in a way of all other smaller ones so ...
0
votes
1answer
41 views

Is it possible to add symbols in QGIS?

Is there any way so i can add symbols like ( <, > ,- ) in QGIS polygons/vectors so I can define for a example in which way is "this pipe of drainage leaking water" Working in QGIS 3.2 Bonn
2
votes
2answers
99 views

Making labels stay at some defined position in QGIS?

I am using QGIS 3.2 Bonn. If I add a label (and I have a lot of labels, for every field, river, path, etc...) and if I zoom out all labels are crossing each other and it is hard to know what is ...
1
vote
0answers
35 views

No outputs created using processing-TauDEM and QGIS 3

Has anyone run across this error when trying the New processing-TauDEM plugin in QGIS 3? The following layers were not correctly generated: C:/Users/david.laverty/AppData/Local/Temp/...
1
vote
1answer
100 views

Unable to open QGIS 3.2.3 Bonn

I have uninstalled and re-installed QGIS on my 64-bit Windows 10 Pro work computer. I added the program into environmental variables and tried running it. I received the following error message: ...
1
vote
0answers
24 views

Export dxf file to shp with QGIS3

I want to export dxf file to shp with geometry type is LineString input = 'D:\projet_2018\myfile.dxf' output= 'D:\projet_2018\myfile.shp' processing.run('gdal:convertformat',{ 'INPUT' : input, ...
1
vote
1answer
41 views

Add multiple pictures to a point

I am working with QGIS 3.2 (Bonn) and would like to add multiple pictures to a point (shapefile). In the end I would like to use the identify/info button and the picture should appear. Anyone know how ...
1
vote
0answers
34 views

Custom Attributes form in QGIS 3

I'm trying to customize feature form with ui file, I followed https://nathanw.net/2011/09/05/qgis-tips-custom-feature-forms-with-python-logic/1 but the attributes values still null when I added ...
0
votes
1answer
36 views

Unable to resize polygons/lines imported from Google Earth PRO Using KML Tools

I imported all my files from Google Earth Pro into QGIS and I need to resize some of the polygons (after agricultural job is done, some of fields get bigger or smaller; from corn we go to soy etc.) ...
0
votes
2answers
50 views

Calculating Ha of specific fields in QGIS?

I use QGIS Bonn 3.2.0 So my question is how can i calculate Ha for specific fields i marked on picture. Is there any tool and if yes which and how to use it?
0
votes
1answer
41 views

Merge multiple raster .tif in QGIS 3.2?

I'm trying to merge 12 .tif raster layers (raster -> misc -> build virtual raster), but keep getting this error: Loading resulting layers The following layers were not correctly generated./var/...
2
votes
1answer
73 views

Using MMQGIS to create accurate buffers?

I have read in several places that the best way to create a buffer around a vector point is using the MMQGIS plugin. I want to create buffers in London locations within a few metres of each other ...
2
votes
2answers
162 views

GRASS GIS Plugin not loading in QGIS 3

When starting up QGIS 3.2.2 (also tested with 3.2.3), I get the following message in the "Plugins" Log Message Window: 2018-10-18T08:03:48 WARNING Failed to load C:/OSGEO4~1/apps/qgis/plugins/...
1
vote
1answer
48 views

how to change encoding of a geopackage in QGIS 3

For other formats you just go to Label >> Properties >> Source and there's a clickable button to select from a list of locales; but this box is grayed out for GPKG, is there a way to change the ...
4
votes
1answer
83 views

Styling polygon layer with symbols that indicates value of attribute of polygon?

I want the same thing, but the number of dollars shown should indicate the value of the attribute of the polygon. For example one polygon may have 2 dollar icons indicating 200 (value of an attribute, ...
1
vote
0answers
48 views

Placing Label in QGIS with EasyCustomLabeling?

I've converted the labels for a feature class I have using the EasyCustomLabeling tool in QGIS 3.2. Other labels within the layer are not having the same problem. I'm trying to place the label in an ...
1
vote
1answer
30 views

Adding label to whole group of drainage features using QGIS?

I am using QGIS 3.2 Bonn and have a lot stuff imported from Google Earth. Am I able to create a group of all drainages and label them with one click, or do I need to choose/select a new one each time?...
1
vote
0answers
80 views

Is there a way to install FileGDB driver after QGIS has been installed?

I have QGIS 3.2 installed (Windows 7 64-bit), and I need to be able to read and write to Esri file geodatabases. I have read the thread Installing File Geodatabase (*.gdb) support in QGIS?, which ...
1
vote
1answer
34 views

How to use all my data from Google Earth on QGIS?

So my problem is this : I been working in Google Earth for 4 years, and always lacked something, last week I found out about QGIS and started experimenting with it. It have much more tools than GE and ...
2
votes
0answers
40 views

Disable warning that scratch layer isn't saved?

I'm upgrading a QGIS plugin that I've written for farmers (GeoDataFarm) and I wounder if it is possible to disable the warning of temporary scratch layers on close project that was added in QGIS 3.2? ...
2
votes
1answer
118 views

Using Label Leader line in QGIS?

I am using QGIS 3.2. I am trying and trying to get a line from my points to my labels! I have not moved the labels manually, but they are offset using the "offset from point" choice for placement. ...
0
votes
1answer
44 views

Dividing polygon and assigning values ​proportionally (population) using QGIS?

I need to split several polygons (census blocks) that contains numerical attributes (population) into smaller blocks, but assigning that data proportionally. For example: if the splitting is made by ...
0
votes
0answers
48 views

QGIS OSM Tools plugin Matrix function results into empty table

I am trying to use OSM Tools plugin in QGIS 3.2 to generate routing matrix between two sets of points ("From" SHP with 3 points and "To" SHP with 3 points). I am using these dummy point layers in WGS ...
0
votes
1answer
36 views

MbTiles is not shown at a specific scale in QGIS 3.2

I've created MbTiles with gdal_translate in the OSGeo4W Shell. The workflow was at follows: convert jp2 files to geotiff with gdal_translate create a Virtual Raster for all raster files (about 1000)...
1
vote
1answer
31 views

Unable to execute Processing nativecentroid in python standalone scripts using PyQGIS

I am using QGIS 3.2 on Windows7. I had successfully set all enviroment variables in OSGeo4W shell. I have run small scripts without any issue. I have to run processing.run('native:centroids', {'...
1
vote
0answers
24 views

Insert point layer as input for GRASS viewshed in QGIS 3.2 modeler

I’m building a QGIS (3.2 Bonn) tool for my colleagues using graphical modeler. The tool should get 3 inputs: DEM raster layer, vector layer of points, vector layer of a point of interest (POI). The ...
1
vote
1answer
353 views

Road graph plugin in QGIS 3.2.2

Where can the Road Graph plugin be found in QGIS 3.2.2? It is not among the plugins.
2
votes
1answer
114 views

Exporting model to Python script using QGIS? [duplicate]

I want to edit a few things to my model in QGIS 3.2.2, but first I need to convert this model to Python script. Is there a way to do it?
0
votes
1answer
139 views

Downloading WFS data using QGIS?

I tried to download data from WFS server but it doesn´t work with Qgis 3.2.2. I connected to https://www.wfs.nrw.de/geobasis/wfs_nw_alkis_vereinfacht Then I connect to server and wanted to preselect a ...
1
vote
0answers
71 views

Datum transformation in QGIS 3

I have an Esri shapefile with following in the .prj file (broken into multiple lines for comprehension): PROJCS[ "SGL_Stereo", GEOGCS[ "GCS_SGL_GEO", DATUM[ "D_SGL", SPHEROID["...
1
vote
0answers
32 views

QGIS 3.2 - How do I only display only one of my overlapping rasters at a time?

I have a series of overlapping rasters and I only want one to display at a time so that the borders of neighbouring rasters are not obscuring anything on the centre raster. Is there a way to tell QGIS ...
0
votes
0answers
18 views

Error on a .qgis after QGIS Bonn 3.2.2 froze

Using QGIS BONN 3.2.2 the .ggs froze and crashed. now I am getting an error when trying to open the .qgs that froze. see attached image