QGIS is a cross-platform GIS application licensed under the GNU General Public License.

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-3
votes
1answer
21 views

How can I import KML (unzipped KMZ) into QGIS 2.8.3? [duplicate]

Can I import KML from http://gis.nature.cz/arcgis/rest/services/PrirodniPomery/Geomorfologie/MapServer into QGIS 2.8.3? I´m not sure with the duplication. I extracted KML file from KMZ and then I ...
0
votes
0answers
11 views

Compare two columns in QGIS attribute table

column A = street name column B = Building type [Residential or Commercial] what i am trying to do is get "street name" with the highest number of "Commercial" Building Type. appreciate a ...
2
votes
2answers
2k views

Reclass in QGIS?

I'm new in QGIS and I'm trying to reclass a raster with reclassify grid values. I want to reclassify by table, however fixed table has only 3 rows and I need some more, but button to add is not ...
6
votes
3answers
5k views

Features to 3D from 2D in QGIS

Is there a way to convert 2D features to "3D" features in QGIS? I know there is a way to do this in ArcMap by using an attribute value in the attribute table, but I am looking to do this with ...
1
vote
1answer
189 views

Error Opening OpenLayers plugin in QGIS [on hold]

I have installed version 2.12 of QGIS and I have installed the OpenLayers plugin. However, when I try to add a basemap through Web > OpenLayers plugin I get the following error message "An error has ...
1
vote
1answer
530 views

How do I get the vector output segmentation algorithms to work properly in QGIS 2.0?

I'm trying to run the Watershed Segmentation algorithm, specifically, but I have been receiving the same error message using any of the available segmentation algorithms. I'm new to QGIS and have been ...
3
votes
2answers
133 views

Install QGIS 2.14 Essen on Ubuntu 16.04 Xenial

I'm having trouble installing QGIS on Xenial. `debian` release When I try using the debian release (i.e. without ubuntugis dependencies) I get the following errors (please note there is no xenial ...
0
votes
0answers
14 views

Use array[] datatype in qgis from postgresql

I'm just a beginner in GIS, so I'll be glad to see any comment here. I have tables in PostgreSQL which I've connected to QGIS. There are columns in tables with datatype array[]. But it's not easy for ...
2
votes
2answers
1k views

shapefile for mumbai area or section wise

I am working on a project in which i need to plot data on Mumbai city map section wise or area wise but i am not able to get Shapefile for the same. Can anyone please provide me the link where i can ...
0
votes
0answers
15 views

Geoserver WMS can connect in QGIS/ArcGIS desktop, but not in OpenLayer3

I have a WMS service publish in my machine, I can conect this service with my Public IP (in other pc) and private IP (local Network) in Arcgis Desktop or Qgis, but I can't view it in openLayer 3 or ...
1
vote
1answer
34 views

Label only selected features with PAL PyQgis using an expression

I'm trying to label only selected features with an expression using PyQgis and the PAL functions, but I don't find any example and the API don't help me a lot (or I don't found it). My Qgis version is ...
20
votes
9answers
29k views

How to convert KML to shapefile without losing attributes using QGIS?

I'm new to QGIS and all geoinformation itself but have to work on some difficult stuff. I have a KML file with hundreds of points. To each point there is information, such as Name, Power, Age (it's a ...
0
votes
1answer
19 views

How to append OS MasterMap Feature Class to the Feature class in PostgreSQL database

I have my Enterprise Geodatabase as PostgreSQL. I want to keep OS MasterMap data on the Geodatabase and would like to update it whenever a new tile is downloaded. However, I am struggling to find a ...
1
vote
0answers
48 views

Missing dependency for LAStools in QGIS 2.8.5 Wien

I am using QGIS 2.8.5 Wien and I am trying to install LAStools toolbox. I followed the link to install it: http://rapidlasso.com/2013/09/29/how-to-install-lastools-toolbox-in-qgis/ I did ...
1
vote
1answer
34 views

Shapefile disappeared after changing CRS

I change the coordinate system (CRS) of a point data but it disappeared. I tried zooming to layer but its not visible. I am using QGIS 2.14
2
votes
2answers
36 views

Open local Raster Tiles in QGIS

I have a local directory with a Raster Tile, downloaded with SAS Planet (I know about the license issues, its just a personal test). In Global Mapper I can load it directly from the directory using: ...
0
votes
0answers
22 views

Compare data from different sources

I have two files in QGIS about restaurants in the same area, how can I get elements that are only in the first source and not in the second and viceversa, connected to the same activity? I also need ...
3
votes
0answers
19 views

Tools to help migration from Mapserver to QGIS Server

I'm going to migrate a Mapserver WMS server to QGIS Server. I'd like to know if there are some tools or plugins that convert Mapserver mapfile (.map) to QGIS project file (.qgs).
3
votes
0answers
18 views

Classify image using segmentation analysis using QGIS and OrfeoToolbox

My first question on stackexchange (sorry for my english language)! I use stackexchange often to understand GIS principles and workflows. I wasn't able to find a answer. For this project we made a RGB ...
0
votes
2answers
73 views

How to automatically extract borders from an old map?

I am new to QGIS and I am wondering whether there is a plugin which automatically recognises the borders on a map and converts the areas into polygons? Edit: I am using QGIS 2.14.1. It is a picture ...
3
votes
0answers
26 views

Rectangle shapefiles with the same extents does not align perfectly after projection

I have a rectangle shapefile built with UTM19 coordinates using a python script, and then projected to NAD83_CSRS (EPSG:4617). I have a second rectangle shapefile built with the same method (python ...
1
vote
1answer
26 views

Reclassifying raster analysis (like the one in ArcGIS Spatial Analyst) in QGIS [duplicate]

I am trying to reclassify raster (DEM) in QGIS. I know how it is done in ArcGIS (Spatial Analyst, reclassify option), but I would like to know how it is done in QGIS?. The point of my exercise is to ...
4
votes
2answers
272 views

Is there an address gazetteer for QGIS?

I have a SQL database that has our local address database on it - it has no geometry within it, just a list of addresses and X and Y co-ordinates. I want to use this data to enable people to search ...
0
votes
0answers
15 views

Convert a raster with one band into a raster with RVB bands on QGIS?

So yesterday i downloaded a raster tile on a WMS server and exported it with Grass. I get a raster with 3 bands, i treat with the Semi automatic classification Plugin in QGIS and it works perfectly. ...
4
votes
1answer
63 views

QGIS script to calculate stats for a single band raster

Can anyone help me to write a script code, in QGIS script editor, for calculating the main stats (minimum, maximum, mean, median, standard deviation,....) for a single band raster? Actually I am ...
3
votes
1answer
50 views

Clip raster by mask layer returns error “wrong number of parameters”

Using Python for QGis 2.14 Essen i try to clip a raster by a Polygon, as indicated here: http://docs.qgis.org/2.6/de/docs/user_manual/processing_algs/gdalogr/gdal_extraction/cliprasterbymasklayer.html ...
1
vote
1answer
24 views

converting process for dwg plan

I work for an train enterprise and we want to develop a SIG. The main goal is better property management. The main data to manage are dwg plans. My job is to write a process to introduce this plan in ...
-3
votes
0answers
22 views

How configure a search button in leaflet map [on hold]

I have created a web-map based on leaflet with support of QGIS and qgis2leaf. I have a table with: name, surname, city, job, but I don't understand how to configure the search button. I want to ...
2
votes
1answer
28 views

Why can't save changes on GeoServer layers via QGIS?

I am using QGIS 2.14 on Windows 10, and GeoServer 2.8.3 on Windows 2008 Server (VPS). QGIS manages my GeoServer layers with Web Feature Service. I would like to change the geometry or attributes of ...
1
vote
0answers
14 views

Qgis network prepare road graph

I have been working on finding shortest path between two buildings. For that purpose i have created kml files of various streets, converted them into shape files and then merged all of them together. ...
2
votes
1answer
28 views

Is there a way to apply the “Select features by rectangle\polygon…” function on multiple layers simultaneously?

I have put a map together using openstreemap data that is intended to be used as a base for different projects. However due to the amount of information (number of layers) the loading time is rather ...
4
votes
1answer
25 views

QGIS print composer internal grid labels

Is there a way to have the grid labelled inside of the map frame (I don't mean the option to draw coordinates inside the frame)? What I want to achieve is a "ladder" of labels like in this example: ...
2
votes
0answers
23 views

Bold and Italic layer labels with Python in Qgis

I'm trying to apply some labeling properties to a layer using Python. Everything went fine, except the way I tried to apply the Bold and Italic settings. Here is a part of the code: ...
0
votes
0answers
23 views

qgis v2.10.1-Pisa live tracking with gps save track as shapefile

I am using qgis with gps information and a usb gps. within gps information > options > digitizing I have checked the box for "Automatically save added feature" and Track > "Automatically add points". ...
1
vote
1answer
83 views

QGIS 2.14 Georeferencer Issue

Am having an issue with the QGIS Georeferencer - I start with a fresh canvas but for some reason, the points always end up shifting a great amount (see screenshot). I've double checked my points, and ...
2
votes
0answers
24 views

Approach to controlling which layers display in a QgsComposerLegend

I've tried 2 approaches to control what shows up in print legends. Neither of them work which is troubling because other than pruning the layerRootTree in advance of composer.addItem(legend), there ...
0
votes
2answers
296 views

Remove sections, defined by a line or polygon, from a raster in QGIS

(QGIS 2.6.0 on Windows.) I have created a raster layer of heights using the TIN interpolate function. I also have another raster layer with more accurate information on the height of particular areas ...
1
vote
2answers
36 views

How to set the paper size to A4 for a PDF export with pyQGIS?

I have been developing this code, based on the official documentation of QGIS and some codes in gis.stackexchange. But my problem is that I don't know where to establish my height and width to make a ...
1
vote
0answers
39 views

QGIS 2.14.1 LAStools install error: “wrong value for parameter 'Msys folder'…” [duplicate]

To start I went to step 4 and extracted LAStools to my C drive and just made the folder there. I can't do step 8 because it seems to already be in "advanced interface". Then step 9 mine only says ...
3
votes
1answer
423 views

WindowsError: [Error 32] The process cannot access the file because it is being used by another process

I am reading images (through Python) and do something. These images are placed in a temporary file, through: tf = tempfile.mkdtemp(filename) I use gdal to read the images (short part of code): ... ...
1
vote
1answer
126 views

LAStools in QGIS error at activation: “wrong value for parameter 'OTB applications folder'…”

I have a problem with LAStools in QGIS 2.14. I've followed the LAStools instructions for downloading LAStools for QGIS. ` I replaced 'lidar' folder in ...
2
votes
0answers
51 views

QGIS 2.12 LAStools lasmerge error: “no outputs specified” [closed]

I am trying to merge 4 .las files with "lasmerge" within "LAStools" in QGIS 2.12 running Windows 7 64. I keep on geting error "no outputs specified" even thoug i did specify the output folder and ...
1
vote
1answer
115 views

Using lasmerge in QGIS 2.8.3 is not working: “…instance has no attribute”

Every time I try running lasmerge tool from LASTools within QGIS, I get the following error message: Algorithm lasmerge starting... lasmerge instance has no attribute ...
3
votes
3answers
2k views

Problem using LAStools in QGIS 2.6.1: “global name 'os' is not defined”

I have a problem with LAStools in QGIS 2.6.1. I have never used QGIS to process LiDAR data before. I downloaded LAStools yesterday from the rapidlasso GmbH website. I unzipped the “lastools.zip” ...
1
vote
0answers
15 views

Circles preview in QGIS for TripAdvisor API

I'm going to use the API provided by TripAdvisor (see here: https://developer-tripadvisor.com/content-api/documentation/) to download hotels in some municipalitys from their servers. Data is requested ...
1
vote
1answer
197 views

Snapping many vertices from line or polygon layer in QGIS?

I have several lines(streets) and polygons(plot layout of areas) that the shared points (lines: road intersections, polygons shared plot corner) are not connected. Is it possible to auto snap all ...
2
votes
0answers
21 views

QGIS 2.14 Composer incorrectly renders svg text position

I just noticed that SVG rendering in composer since upgrade to QGIS 2.14 is incorrectly handling some text placement. I have an SVG compass rose, which was rendering fine before upgrading to 2.14 ...
0
votes
1answer
30 views

Extract the elements not in common between two different point sources

I've downloaded accommodations from two different sources, now I have the list of elements from them in two separated shape files and also the list of elements in common between these two sources. How ...
6
votes
1answer
100 views

How to use a graphic for labeling in Qgis?

The "label" option in QGIS allows a wide range of possibilities for displaying attributes of an object in the map. Is there a way to use a symbol/graphic (eg stopsign.png) for labeling objects of a ...
2
votes
3answers
255 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 ...