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Questions tagged [qgis-3.4]

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2
votes
0answers
26 views

Clip raster by mask layer not working in QGIS 3.4.2?

I've been successfully using QGIS 2.18.21 to "clip raster by mask layer" and then run v.rast.stats. However recently v.rast.stats has stopped working in QGIS 2.18.1. The log does not show an error, it ...
0
votes
0answers
30 views

GRASS r.slope.aspect via QGIS 2.18 vs QGIS 3.4 - not working

I seem to be unable to replicate actions with GRASS tools when I access them through QGIS 3.4. In particular the r.slope tool. I receive error messages and it fails in QGIS 3.4. They seem to work fine ...
1
vote
1answer
27 views

Retrieve layer file path in PyQgis

I've been trying to list al file paths in my project using PyQgis (I'm not really acquainted with it); my goal is to translate and clip them all to export them to a folder I've tried with: names = ...
1
vote
1answer
13 views

MOLUSCE plugin is not available for QGIS 3.4

I have updated QGIS into 3.4 Madeira version. I can't find MOLUSCE plugin in this new version. Is it not available for newer versions?
1
vote
0answers
16 views

QGIS 3.4 - In Layout View can I use the properties of one item as a variable in an expression for another item?

In my layouts I have a legend and a references text box. I want the references text box to be next to the legend in every layout however the width of the legend changes often. Both items are in the ...
1
vote
0answers
29 views

Prevent labels being cut off at edge when using Layout-Atlas

Im creating an atlas but the labels on the edges sometimes get cut off: When it should look like this: The text is coming from a Point layer, and the Point is located at the "E" letter above. I know ...
1
vote
0answers
66 views

Export standalone qgis model

I'm totally new to the field of GIS. I want to create some GIS-models and publish them on my website. Therefore the models should be connected to my database to constantly have the most recent data. ...
1
vote
1answer
43 views

Categorized symbols are not working in QGIS 3.4

I'm trying to generate categorized symbols for a polygon layer in QGIS 3.4. The code below should generate random colour polygons for each record of 'run' layer and I'm not getting any error message. ...
0
votes
0answers
21 views

Create PDF with features of a layer

I want to design a PDF that contains the data of the different features of a layer and export it to PDF with pyqgis. Is that possible? I only see reference to print composer and I can't find a way to ...
1
vote
1answer
52 views

Making automatic updated date and time field in QGIS

I wish to create a field which automatically updates with the current timestamp when edits are made to a feature. I am using QGIS 3.4 and I am testing this using a shapefile. Following @Joseph's ...
0
votes
0answers
43 views

WFS Client plugin fails to install on QGIS 3.4.2

After installing Desktop version of QGIS 3.4.2 (on Windows), installing the plugin WFS Client 2.0 (v.0.9.8) (https://plugins.qgis.org/plugins/wfsclient/) fails with the error shown below: ImportError:...
0
votes
1answer
36 views

QGIS 3.4 - Find all layers not using the project CRS

I have a large project and I recently reorganised my data. This included reprojecting some of it. I have updated the data sources for all of my layers however there are some layers which are still ...
0
votes
1answer
33 views

Applying graduated renderer to polygon using PyQGIS 3?

I'm trying to symbolize a polygon layer using a graduated color ramp, with no success. In the attribute field of my layer I have a column: 'PatCNT' with integer values from 2 to 6 for each row. I'...
1
vote
0answers
23 views

How to transliterate in QGIS using Python 3

I am QGIS user but beginner in Python. I figured out how to transliterate Georgian script into Latin using this module (https://pypi.org/project/transliterate/). from transliterate import translit, ...
0
votes
0answers
35 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 ...
2
votes
0answers
46 views

Why are my vector layers with different CRS not aligning?

I'm using QGIS 3.4.1 on Windows. I am trying to use a point vector source from a public authority with OpenStreetMap data, but the points do not align with their expected locations. Try the following:...
2
votes
2answers
58 views

Struggling to use Field Calculator - PyQGIS

I'm using QGIS 3.4 (Madeira) and I am struggling to use python to calculate attributes of a new field in the attribute table. I have already joined a csv and a shapefile. I use the code below to ...
1
vote
1answer
109 views

QGIS 3.4.1 crash without error after opening “options” (18.04. Bionic Beaver)

QGIS 3.4.1 on Ubuntu 18.04. crashes without error after opening "options". I uninstalled all plugins and reinstalled QGIS (purge, autoremove, install...)
1
vote
0answers
33 views

Vector Grid shows big difference between cartesian and ellipsoid measurement

I am using QGIS 3.4.1 on Windows 10. Project CRS is EPSG:3857 (WGS 84/Pseudo-Mercator). I have defined a vector grid. Type is Rectangle (polygon). Horizontal and vertical distance is 50 m. Overlay is ...
0
votes
0answers
27 views

Want to underline some part of label in QGIS

I try to create lable and underline only the second line. By using this link method. Using Expressions to underline part of a label and the result is but the problem is when I use "Move lable and ...
2
votes
0answers
69 views

Nearest Neighbor Analysis Results

I'm fairly new and entirely self-taught in using QGIS 3.4. I'm looking at turtle nest sites and trying to run a nearest neighbor analysis to analyze their distribution and establish whether or not ...
1
vote
2answers
53 views

QGIS plugin development environment variables?

I want to develop a plugin gor QGIS3. I downloaded Osgeo4w network installer 64Bit. I created a bat file as following for set my environment variables; @echo off call "%~dp0\o4w_env.bat" call ...
1
vote
0answers
37 views

QGIS/PostGIS: geom as Point in -2147483648

Based on QGIS 3.4 and PostGIS 2.5: I imported a shapefile in my PostGIS database using shp2pgsql. When I connect to my PostGIS database, I see that 2 tables were imported. One with the hint "geom as ...
2
votes
0answers
46 views

QGIS 3.4 won't come to the foreground

I recently upgraded from QGIS 3.2 to 3.4 using the standalone installer (Windows 64 bit), and uninstalling 3.2 beforehand. When I open 3.4 it goes the background behind all my other open programs 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 ...
4
votes
1answer
109 views

Hiding NULL text in attributes using QGIS?

In QGIS 3, how do I hide the 'NULL' text from empty attributes? QGIS 2.18 has a setting for that, but can't find it in QGIS 3.4.
1
vote
1answer
50 views

Error when trying to publish map on QGIS Cloud

So when I try to publish a map with plugin " QGIS Cloud " I get this error which you can see on picture down below, anyone have solutions how to fix it? P.S. I am using QGIS 3.4 UPDATE After trying ...
0
votes
1answer
31 views

QGIS - how to move layer files while project is open

I want to move layer files (within browser directory structure) while my QGIS project is still open - therefore allowing the project to update its relative link to that file. ARCGIS does this, but not ...
3
votes
1answer
64 views

How do I change the font in the QGIS Script Editor?

How do I change the font in the processing script editor? I loaded 3.4 today and it works, but the font in the editor is not set to a monospace font for English, making spaces and positions extremely ...
-3
votes
2answers
35 views

Layers missing at project start-up

Does anyone know what is the problem?
0
votes
1answer
27 views

Create New field equal to existing field - convert to integer - PyQGIS 3.4

I'm using PyQGIS 3.4, I am trying to add a new field and set the values equal to an existing field. The existing field are population totals but are in string format, I want to convert these to ...
1
vote
2answers
70 views

Why isn't the QGIS 3.4 tracing tool not tracing my line?

I'm trying to trace a new line onto another existing line layer (highlighted yellow), but the red rubber band will not stick or follow the existing line completely. Instead the red rubber band wanders ...
0
votes
0answers
55 views

QGIS 3.4 Mac Layout Font problem

Long time qgis mac user. I find with qgis 3.4, it will not change fonts within the Layout text box, nor will it show ESRI North arrows when I choose that font in a text box. When I deleted 3.4 and ...
0
votes
0answers
43 views

Fix offset of GeoTIFF file

I have a project containing a GeoTIFF file in a raster layer. I've also got a few other layers from OpenStreetMap and USGS Topo. While the GeoTIFF and USGS Topo line up perfectly, OpenStreetMap is ...
0
votes
0answers
23 views

Select Multiple Records Based on Key From One Record Match

I have been trying various expressions in the "select by expression" dialog. I have a 500,000 record point shapefile with a ID column and attribute column, and others but let's keep this simple. This ...
1
vote
1answer
28 views

How do you symbolise a polygon to look like an AutoCAD revision cloud?

I work for an engineering firm and the standard for annotating areas which require review or areas of interest is to add AutoCAD revision clouds. There is a dedicated tool for this in AutoCAD but I ...
2
votes
0answers
75 views

Why does QGIS 3.4.0 create .tmp file instead of refresh editing layer after saving?

I downloaded QGIS 3.4.0 and try to save edits in .geojson file. I can save new objects, but not edits in attributes. Insted of it, QGIS creates .tmp file with my chаnges into the same folder with ...
3
votes
1answer
159 views

How do you make the status bar text bigger in QGIS 3.4?

I just installed QGIS 3.4 and the text in the status bar is way smaller than it used to be. Is there a way of increasing the text size? See comparison below: QGIS 3.4 QGIS 3.2
1
vote
1answer
102 views

Checking SAGA version from a python plugin in QGIS 3.4.0

I use QGIS 3.4.0 on Windows and I want to verify SAGA version with processing.algs.saga.SagaUtils.getSagaInstalledVersion(). But I get an error: module 'processing' has no attribute 'algs' This was ...
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 ...
6
votes
3answers
406 views

Adding Equal Earth Projection in QGIS?

There is a new accurate projection for world maps ► Equal Earth. I know its proj4 but I can't add it in QGIS (see below). Does it need some kind of QGIS update?