Software plugins that add functionality to the QGIS package

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1answer
101 views

Convexhull for selected features and performing buffer for the resultant convexhull using python

I have features selected on the mapcanvas. I want to perform convex hull for those selected features and save those in a memory or store it in a variable preferably and then want to do buffer for the ...
1
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1answer
119 views

Save Vector layer and update .qgs project file (pyQGIS)

need help to solve the following use case: QGIS started with new project (no layers) New layer is created programmaticaly and data is populated: vl = QgsVectorLayer("Point", "temporary_points", ...
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0answers
42 views

Parcels management and land ownership

Is it possible for me to split a feature by the column area i input?Like A feature has 3000 sqm and i have in attribute table column 1= 2000sqm and column 2= 1000 sqm and based on this 2 colums to ...
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0answers
73 views

Creating Convex hull and finding buffer in QGIS

I have a layer and features are selected using Select Features by freehand tool and for that selected features, convex hull was done and for that convex hull i am trying to find buffer and write it in ...
1
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1answer
47 views

Buffer for features selected in the mapcanvas and writing to csv file

I have some features selected by using "Select Features by Freehand" tool in QGIS and try to find the buffer for those selected features alone and write the city and state names within in the buffer ...
2
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1answer
58 views

Odd behavior in a QGIS plugin: my function is triggered twice

I have a plugin with a function (triggered by a button) that selects a specific layer by name, then shows its attribute table. When I close the plugin and open it again, the attribute table pops up ...
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3answers
42 views

QGIS python plugin appends values every time it's started

I've written a small python plugin (using plugin builder as base) to simplify the expression process for a given layer (just a few comboboxes that are used to create a query). The combo box populating ...
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1answer
36 views

Where can I get the Cadinput plugin for QGIS

From Stackexchange, I got to know that Cadinput plugin could do this work. I need to create a line feature specifying the desired length and bearing in an open source GIS (Preferably QGIS) as in CAD ...
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1answer
60 views

How to do a buffer operation for a polygon drawn by the user using python in QGIS

I have a polygon drawn on the map canvas.Say the polygon would be drawn by using "Measure Area" tool in qgis.Now, I want to do buffer for certain distance around that polygon.I can see the below ...
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2answers
115 views

Can't compile plugin builder plugin in QGIS 2.4 (Windows)

I'm trying to build a basic plugin using plugin builder but I can't even compile it. I tried following a few tutorials and just trying to compile whatever but that always results in the same problem. ...
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3answers
1k views

Error when creating a new mapset with GRASS in QGIS

When I try to create a New Mapset with the GRASS plugin in QGIS I get an error or the program crashes. QGIS 2.6.1 (32-bit install, Win7). QGIS crashes completely when clicking "Finish" in the New ...
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1answer
37 views

Warning message needed when there is no specific layer instead of python error

In my plugin, when I click a button it will call the findTheCityNames function which is attached below and get features if there is a particular layer. What I want is if there is no specific layer in ...
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1answer
93 views

How to get a layer by name in PyQGIS?

I have a plugin which finds buffer for list of cities, provided the distance. The state and city names are taken from the attribute table and gets filtered accordingly. What I want is My plugin should ...
2
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1answer
169 views

QGIS moving the layer/all features using Vector Affine Transformation

I'm using QGIS to analyse some flight tracks which were produced using a different software. Now when they are on QGIS the reference point of everything is on 0,0 which is the aerodrome reference ...
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1answer
102 views

Global name canvas is not defined

I am just trying to print the layer name using python in my QGIS plugin by following code. allLayers = canvas.layers() for i in allLayers: print i.name() It is saying an error: Global name canvas ...
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0answers
38 views

How to select the buffer region in map canvas in my plugin using python

I am developing a plugin which finds buffer by getting state name, city name and distance given by the user. The plugin works fine and writes the cities that matches the distance in a CSV file. What i ...
1
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1answer
28 views

Error while trying to replace a opened csv file with the newone in my plugin

My plugin does some basic geoprocessing functionalities and write the output as csv file. What i want is when i open some already writed output csv file in a writable mode and try to replace the same ...
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0answers
10 views

How do i select specific time and download quality MOD021KM data

I am trying to download MOD021KM for net primary production estimation, and am so stuck on how to download the data and selecting the best time of a day using LAADS website. Morever which values for ...
2
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5answers
247 views

How to export attribute table with start and end coordinates of lines to Excel?

I am working in QGIS. I have a georeferenced line layer and I want to export the attribute table and the coordinates of start and end points of my lines to Excel. Can I do this with QGIS?
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26 views

Error in finding buffer

I am trying to find a buffer for city provided a state, distance and filepath to write as csv. What i am facing is that the name which i selected in the city combo box alone gets writed in the csv ...
1
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1answer
41 views

Removing the duplicate values in QCombo Box

In my plugin, there is a combo box which lists city names for a particular state. FOr example, if i chose a particular state and city will be some 20 names in the dropdown. But the first name alone ...
1
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1answer
47 views

How to compute buffers for certain features?

I used the following snippet of codes for finding buffer. def buffer(self): layer = self.iface.activeLayer() distance = float( self.dlg.DistancelineEdit.text() ) city = ...
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1answer
85 views

How to import fromUtf8 in QGIS?

# Declare instance attributes self.actions = [] self.menu = self.tr(u'&City_searcher_plugin') # TODO: We are going to let the user set this up in a future iteration self.toolbar = ...
0
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1answer
103 views

How to trigger a QGIS action when a plugin button is clicked?

I tried calling the select free hand tool by below snippet of code. iface.actionSelectFreehand().trigger() I dnt have any idea how to call this when i am pressing a button in GUI. my gui is ...
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34 views

Error in my buffer plugin

In my buffer plugin, i tried the following code # Get buffer distance and selected city dist = float( myLineEdit.text() ) city = myComboBo.currentText() # Get the feature corresponding to the ...
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1answer
90 views

How to call default tool in QGIS inside plugin using python script?

I want to create a plugin which can draw irregular polygons in QGIS. For that, I want to call the Select features by freehand default tool inside my plugin. How can I do this within a python script?
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1answer
85 views

How to connect Excel file with QGIS?

I am working with QGIS and I want to connect with Excel. I have exported attribute tables to Excel. Now I want to connect Excel with QGIS in the way that if I change a line dimension, it will be ...
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2answers
69 views

Is it possible to set up a local QGIS Plugin repository?

I've developed a couple of custom QGIS Plugins for use by our office. I can't post them to the official QGIS Plugins repository as they reference/utilize sensitive data on our own servers. For ...
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2answers
32 views

Is there a list of free application modules (or “Fachschalen”, in German) for QGIS somewhere?

I'm looking for application modules (in the form of plugins) that cover sets of related tasks like asset management, in a basic UI. A simple use case example: a water gauge (point feature with a 1:n ...
1
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2answers
1k views

How to export attribute table to Excel from QGIS?

I have seen all the questions for this question, and I try all the answer like copy paste, csv (in fact this I don't know where to find) but none of all is not the right answer. Can anyone help me?
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0answers
172 views

Couldn't load plugin processing in QGIS: Access is denied for R

Couldn't load processing plugin due to flowing error. Any help? thanks. Couldn't load plugin processing due an error when calling its initGui() method Traceback (most recent call last): File ...
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0answers
95 views

QGIS 2.6 can't reload Python plugins

Im using QGIS 2.6 on Ubuntu 14.04. Suddenly a strange caching behaviour appeard in QGIS. When I change the plugin code and try to reload it with for example the Plugin Reloader plugin or when I reload ...
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1answer
48 views

how to generate metadata file for semi automatic classification plug in?

I am working on satellite images. The region I am interested in is only a fraction of the whole satellite images. My laptop slows down tremendously when working on the whole image. So I clipped the ...
1
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1answer
89 views

Getting a number from QLineEdit and passing it to the buffer function

I am developing a plugin which finds buffer. In that i am using lineedit for getting distance from the user and pass it to the buffer function. My current code throws an error "'QLineEdit' object has ...
2
votes
1answer
84 views

How does QGIS know there is a plugin update?

I've created a plugin and hosting the installation zip and xml file on a local network repository (for company use). Everything works fine but every time a user opens QGIS, it shows that the plugin ...
1
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1answer
71 views

Getting values from Qt widgets and using them for a buffer

I am writing a simple plugin that finds buffer. My gui has 2 combo box and 1 Line edit. The first combo box will have a drop down of values from column 'States' and 2nd combo will have a drop down of ...
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0answers
17 views

editing and moving curved text labels (along lines)

does anyone knows how to edit curved text label previously placed along a line?; and after converting it using Easy Custom Labeling plugin "Created labeled layer" tool, I obtain a point feature and I ...
1
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1answer
170 views

Adding field values to a QComboBox in PyQGIS

I have a layer say 'Cities'. There is a column called 'NAME_1' in the layer. My GUI has a QComboBox in which i want the values of column 'NAME_1' alone to be displayed in the drop down of the combo ...
1
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1answer
82 views

How do I properly import python sklearn to QGIS PyQt plugin?

A bit of background: I'm somewhat new to python and QGIS plugin development. I've created a plugin structure for QGIS using the Plugin Builder on QGIS and I've added some controls to the gui and ...
1
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1answer
155 views

How to find chainage of points using LRS

I have a Shapefile of road that I have converted from a KML file (created on Google Earth) and a txt file containing lat long (from GPS) of points with some attributes. The points are not exactly on ...
1
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1answer
83 views

How to sum 10 raster bands instead of 9 from code?

I want to sum 10 raster bands but the problem is that the following code will only work for summing 9 bands, which means the output image consists of 9 bands. from qgis.core import * from qgis.gui ...
2
votes
1answer
111 views

Layer properties dialog in my QGIS plugin

I am developing a plugin which should display some information like geometry of the layer, feature count etc. Now those are currently displayed in QMessageBox.information. I want it to be displayed ...
4
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3answers
175 views

Separate a string value in two integers in QGIS

My problem is the following. I have a huge dataset of forest stands. All the information are separated but in many cases the stands have different age and this is marked in one attribute for example ...
1
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1answer
103 views

How to deactivate my custom tool by pressing the Escape key using PyQGIS?

I'm developing a QGIS plugin and I have created a custom tool. Once the process is over, if the user presses the ESCAPE key, I want my custom tool not to trigger mouse events on the map anymore. How ...
0
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1answer
67 views

Loading all the vector layers in plugin

I have a list of vector layers loaded in the canvas of qgis. `layers = self.iface.mapCanvas().layers() for layer in layers: if layer.type() == QgsMapLayer.VectorLayer: ...
1
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1answer
200 views

Easy Custom Labeling plugin - Cannot find leader lines/arrow button

I have installed the Easy Custom Labeling plugin but the toolbar is nowhere to be found. I have checked the box "Activate experimental plugins" in the Plugins' "Settings" menu. Does anyone know what I ...
1
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1answer
146 views

How to link my QGIS plugin main class to mouse events from a custom Tool?

I Have two files one is mouseevent.py and the other one main.py. class MouseClick(QgsMapTool): canvasDoubleClicked = QtCore.pyqtSignal(object, object) def __init__(self, ...
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0answers
36 views

“mapinfo qgis style converter” : error message

I would like convert a big point layer from .Tab toward .QML thanks to the plugin called "mapinfo qgis style converter" . The symbology of my layer is quite complexe (variables of coulours, shape, ...
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0answers
43 views

The result is not displayed after OK is pressed in my plugin

I am developing a plugin that checks for multipart geometry in a layer in qgis 2.6. After ok is pressed, nothing is displayed. My code snippet is attached. def run(self): """Run method that performs ...
1
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1answer
143 views

Attribute Error: “List” object has no attribute getFeatures

I am developing a plugin that checks for multipart geometry in a layer in qgis 2.6. I am geeting an error list object has no attribute getFeatures. My code snippet is attached below. def run(self): ...