Software plugins that add functionality to the QGIS package

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0answers
27 views

qgis 2.8.1 date filter gives incorrect selection results

I am running QGIS 2.8.1 on ubuntu 14.04 x64. I applied a date filter to a shapefile using the layer Properties_General "Query Builder" button. So the query was "LOCATION START DATE" >= '01/01/...
2
votes
1answer
49 views

pyqgis - Editing a feature - Is it possible to set a listener?

is it possible to set a listener that is fired when a feature is edited? What I imagine is this: A geometry is edited (e.g. cut operation) then a listener is fired. This event gives me back the ...
2
votes
1answer
254 views

Installing Mxd2Qgs plugin in QGis 2.12

My purpose is to use the Mxd2Qgs plugin in order to be able to use mxd files with QGis. I have downloaded the Mxd2Qgs file and unzipped it. I put it in the folder: C:\Program Files\QGis Lyon\apps\...
4
votes
0answers
71 views

QGIS Profile Tool shows no profile

I have installed and followed the process to produce an elevation profile from the Route Profile plug-in in QGIS, but for some reason I am getting no profile to appear. The grids are from OS ...
0
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0answers
11 views

How to access components on UIFileLayout?

I have followed How to programmatically associate a layer with a custom UI? and added successfully my custom *.ui file to the editing window in QGIS. Now I would like to add an action to my custom ...
1
vote
2answers
82 views

I can't find geotag and import photos plugin (QGIS plugin)

I am doing a project on mapping tourist attractions and would like to attach photos and videos to point locations. I have read about the Geotag and Import Photos plugin but I can't find it in my ...
1
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0answers
21 views

Customize QGIS Leaflet webpage [closed]

I created a webpage QGIS map using the Leaflet plugins, how to customize , put mouse over, then features will zoom automatically while you mouse on click on the map features, and also automatically ...
4
votes
1answer
100 views

QGIS Finding valves to turn off for water lines

I am wondering if there is a tool for QGIS that can do what I am about to describe. It might be in network analysis but I am not sure. I have used water gems but it does not do what I want it to do. ...
1
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0answers
48 views

QGIS GeoSearch Plugin Issue

We are trying to use the QGIS GeoSearch plugin and intermittently receive issues with it. We know what the cause is and we wondered whether anyone else experienced this issue and had a solution? We ...
2
votes
1answer
133 views

Mapping out 3D points with QGIS2threejs

I have some points I would like to map out in 3D. The points were gotten from a GPS module athat was attached to a Raspberry Pi. This is the settings I used before starting qgis2threejs: This was ...
3
votes
1answer
40 views

Disable QGis Tips Panel when application start

I am trying to disable the QGIS Tips Panel with config files. I use QGIS Lyon. - QGIS2.ini - And a custom file define with the parameter --customizationfile I know the user can click on "I've had ...
1
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0answers
57 views

Riparian corridor delineation in QGIS

I am trying to delineate the riparian corridors using GRASS in R. But I am having some issues. So is there a plugin in QGIS using which I can extract riparian corridors using the already available ...
1
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0answers
26 views

python handling case in address (lowercase,uppercase) [closed]

I'm working on a python QGIS plugin that takes address info from specific parcels and lists it. The data is in various cases and I'm having a hard time figuring out how to handle it. My data looks ...
1
vote
0answers
91 views

QPyNullVariant not recognized outside of QGIS

So here is a weird one. I'm getting an error about an operation involving a QPyNullVariant: TypeError: unsupported operand type(s) for *: 'QPyNullVariant' and 'float' So I wanted to put a check ...
1
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0answers
29 views

Use QgsRasterCalculator inside function

I'm relatively new to PyQGIS and I'm building a plugin to perform some calculations between raster layers. I was seeking to use the QgsRasterCalculator for some operations, however, the function that ...
2
votes
1answer
87 views

PyQGIS: Change attribute value doesn't work, results in NULL

I am writing a QGIS plugin, which at one point attempts to change several attribute values on a layer. However, in the end no changes are made. If I punch similar code into the built-in Python Console,...
2
votes
0answers
43 views

How to launch a QGIS core plugin from within a python plugin?

In this case I want to launch the Georeferencer core plugin from within a plugin I have written in python. But I don't understand how to interact with the core C++ plugin system from python, if that's ...
1
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0answers
25 views

Python error using Vterrain in qgis

Traceback (most recent call last): File "C:/Users/Haimwant/.qgis2/python/plugins\VTerrain\VTerrain.py", line 409, in run os.spawnl(os.P_NOWAIT, directory + "Enviro", "-...
1
vote
1answer
74 views

How to use QGIS plugin “Rectangles, ovals digitizing tools”

I installed the Rectangles, ovals digitizing tools-plugin, found it on the toolbar, but it's inactive. I made a layer to which I want to add rectangles, it's visible and editable... The plugin bar is ...
2
votes
1answer
153 views

how do I create simple yes/no dialog in qgis python plugin?

I'm making a QGIS plugin that processes a dataset. I started with pluginbuilder and have a GUI that allows me to set what to do. As my plugin is making changes, when it detects a certain threshold of ...
2
votes
3answers
239 views

Road Graph Plugin missing in Qgis 2.8.3

Road Graph Qgis plugin is missing in the official repository, at least, I am not be able to find it. Is it replaced for Network tool in Vector menu? Is there another easy way to have the shortest ...
3
votes
1answer
71 views

Showing QgsAddAttrDialog in a Python plugin

I want to invoke the builtin add field dialog from my python plugin in QGIS: This is the add attribute dialog of the attribute table. It is located HERE. I expect it to return a QgsField. ...
3
votes
1answer
96 views

How to use a png image as a correctly georeferenced background in order to trace lines from it?

I have a png image which looks like this and has some lines which I need to trace (the green and red lines): The coordinate system of the map from which the image is taken is EPSG: 3034. How can I ...
4
votes
0answers
78 views

QGIS 2.10 Can't load georeference plugin?

Apparently my problem was already present in older versions of Qgis. I don't know how to fix it, knowing I have a Linux system (Fedora 23). Somethiing similar here : Where to download QGIS 2.10? So, ...
1
vote
1answer
149 views

QGIS - updating Processing plugin

A recent convert to QGIS, I have versions 2.8.5 and 2.12.2 installed on my PC. The plugin Manager tells me I have v2,10.3 of the Processing plugin installed in the plugin folder of my local drive and ...
0
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1answer
102 views

Install qgis2web plugin

I would like to know how and where I can download qgis2web Plugin. I use QGIS with 2.10.1 version.
1
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1answer
37 views

How do you launch QGIS (Mac) without any plugins enabled?

On a Mac, how can you launch Qgis without any plugins enabled?
1
vote
1answer
48 views

Render QgsRasterLayer without adding to legend

I am trying to render a number of related QgsRasterLayer objects that are related to eachother (they are slippy-type tiles). Ideally I would like one item in the legend that can have its position ...
7
votes
1answer
173 views

Adding PostGIS layer from QGIS Python plugin

I try to develop a plugin to add postgis layers to qgis from a plugin as part of learning python. The code for adding a postgis layer is taken from the cookbook and work fine if I run it from the ...
2
votes
0answers
141 views

QGIS Plugin QuickMapServices error

The plugin installs fine but fails to load with the following Python error cannot import name QgsImageOperation
6
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1answer
156 views

How to use third-party package in a QGIS plugin?

I'm developing a QGIS plugin and I would like to use arrow or requests packages as I'm used to manipulate dates and REST APIs. QGIS does not come with these packages (at less arrow), so when I try to ...
1
vote
0answers
58 views

Call dot net library function from python in QGis

I have created one custom library (.dll) in Dot net. Now, i want to use that dll in my QGis plugin. How i can integrate that? For an example i have one function in library which is used to read excel ...
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votes
3answers
200 views

Traffic Simulation in QGIS

I have several line layers in QGIS 2.8.3. I want to simulate traffic flow in this. Is there a plugin or any possibilty to run a traffic simulation on it.
1
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0answers
33 views

How to use itemChanged signal to update data?

I'm trying to understand the itemChanged signal to be able to update some information. An example of what I'm trying to achieve could be: def setCoordText(): label1.setText(str(label1.x()) + "," +...
2
votes
1answer
71 views

Populate combobox with postgis layers

I'm new to pyqgis/python and programming in general.. and i am working on my first small project. I want to create plugin so that I can add layers from my PostGIS database to a QGIS project. I ...
1
vote
0answers
59 views

How can i set layer polygon in center in QGIS using python?

I am trying to set a fixed zoom level whenever I layer is shifting on different polygon. I have coordinates for all the polygons , I need each polygon to be on center with certain zoom level so that ...
1
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0answers
38 views

How to change a point of an arrow on Print Composer?

To create an arrow on the Print Composer I've used this: qC = QgsComposition(iface.mapCanvas().mapRenderer()) arw = QgsComposerArrow(QPointF(0, 0),QPointF(10,10),qC) However, I can't find an ...
2
votes
1answer
194 views

Should the QGIS “DB Manager” have Microsoft SQL Server as an option?

I was looking for interactive query options for SQL Server (similar to SQL Server Management Studio). The "DB Manager" works great for Postgres and I'm primarily using the Load as new layer as I build ...
3
votes
1answer
76 views

Is it possible to create points that represent lines in QGIS 2.8.Wien?

I want to create points to represent lines from a line layer. This is similar to creating points to represent polygons. Does anyone have an idea on any useful plugin or the best way to do this?
3
votes
0answers
83 views

How to show only selected features from a a layer in the QgsComposerLegend?

I have developed a custom qgis plugin. I have a button to export the map canvas in the form of image along with the legend. I came up with the following code for the legend: legend = ...
1
vote
1answer
46 views

Qgis layer renaming stays the same

I've been developing a plugin for Qgis, but something weird happend while renaming a layer, now whenever i add a layer using a button in my plugin, the layer is renamed with the last name I gave it. I'...
1
vote
0answers
43 views

TimeManager - scale up PNG?

Whilst I think 'TimeManager' works very well, is it possible to define the output scale, so that the output provides better quality data when exporting? There are no options in its interface where I ...
3
votes
1answer
116 views

Updating feature attribute in QGIS plugin?

I am writing a plugin for QGIS (v2.12). There have been quite a few similar questions on this forum, but they don't seem to work for me. my plugin does the following: get the vector layer check ...
3
votes
1answer
75 views

How to fix Quickfinder OperationalError: table quickfinder_info already exists?

This is what I am getting when I try to search in project layers and create a .qfts file to use quickfinder on a local shapefile. An error has occured while executing Python code: Traceback (...
1
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0answers
32 views

Fetching qgis plugins on 2.12.0 Lyon is taking a very long time

Opening plugins for the first time on QGIS 2.12.0 Lyon there is a window popping up saying "fetching repositories". You can't do anything until it's finished. It then takes it ages to fetch. Any ...
1
vote
0answers
22 views

Creating menu item and adding more than 1 plugin in QGIS?

Because if I execute these lines for each plugin, I created a menu item for each plugin. I created many plugins and wish to place them in a new menu item (not traditionals)
2
votes
0answers
131 views

QGIS: SPIT plugin not loading

Using QGIS 2.12 Lyon on a Mac (Intel, 2013). I check the SPIT line in plug-ins, but the plugin does not appear in the menu bar as promised. Log out, restart, nothing helps. Other plug-ins work fine ...
4
votes
1answer
90 views

QGIS and python: Keep a layer always on top of the others

I am working on a python plugin for QGIS using a layer containing linestrings, which I would like to have on top at all times. I have added the layer like the following: QgsMapLayerRegistry.instance()...
1
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0answers
20 views

python - Composer plugin menu catch-22

a plugin for the Print Composer checks if the current project has at least one Composer when loading to avoid the error when creating the menu on a Composer that doesn't exist. However, once the ...
3
votes
1answer
59 views

Check QGIS processing Saga version from a plugin

I am writing a QGIS plugin using SAGA by Processing. Is is possible to test whether SAGA is installed and which version is on? For GDAL, it's OK with: processing.tools.raster.gdal.__version__