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

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2
votes
2answers
470 views

Tiled raster image to be placed in an OSM/ Leaflet.js map

I have a mapoverlay in a custom projection which I need to add as a layer to an Openstreet map within a website. Since I was not able to change the projection earlier, I decided to manipulate the ...
1
vote
1answer
60 views

LAStools in QGIS 2.8.5, installing error: “missing dependency. lastools folder is not configured”

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 ...
0
votes
0answers
13 views

QGIS, connect to postgresql using windows login credentials

How to connect QGIS to PostgreSQL/PostGIS using the Windows user login credentials (Windows / Active Directory / LDAP). Is it possible? Can please anyone tell me how? Thank you in advance.
0
votes
1answer
40 views

How do I convert an active kmz file to a shapefile using either ArcMap or QGIS

I need to convert an active kmz file to shapefile. I have a layer file and a kmz file which feed data from a server. If I try to convert using the kml to layer tool in ArcMap it fails as there is no ...
2
votes
0answers
22 views

Inset map in print composer shifts when saved as pdf

I'm working on a map in the print composer window of QGIS, with an inset map showing a larger extent and highlighting the area of my main map as an overview. Everything looks good in the print ...
0
votes
0answers
8 views

OS X Yosemite: copy / paste into shell GRASS 6.4.4. within QGIS 2.14.0

I want to know How to copy/paste into GRASS 6.4.4. shell within QGIS 2.14.0. I'm working with OS X Yosemite and the right mouse button doesn't work neither shortcut (cmd+c/cmd+v)
2
votes
3answers
37 views

merge overlapping polygons with spatialite

The green points, buffered by one of the point attributes, should result in the three areas outlined in red (a table with three rows): I'd like to do it in spatialite. How can I do that? If it's ...
1
vote
2answers
24 views

Copy DEM attributes to a vector point?

I have a point that I drew on a tiff DEM file in QGIS. The point doesn't have any information in the attribute table except an ID of 1. How can I make it copy the raster information based on the ...
2
votes
1answer
18 views

Encryption of spatial data, GIS access and cloud synchronization

I'd like to encrypt a folder of many spatial datasets (rasters and shapes) because my office computer is shared with others. I've never used this kind of security but I think I should preserve my data ...
0
votes
1answer
17 views

How to create polygons associated to coordinates (QGIS)

I'm trying to create polygons associate to given .csv files. On the polygon I would have to be able to read the coordinates x, y (AND Z) because I need to interpolate points and work with them. I know ...
1
vote
1answer
24 views

Empty a layer for each QGIS project

I have a layer with a customized form. Dropdowns, checkboxes, etc. in a QGIS project which is kind of a template. This QGIS project will be copied and pasted every time a new study has to be done ...
0
votes
1answer
18 views

Viewshed plugin results in memory error in QGIS 2.6

Everytime I use the viewsheds plugin up to this point I get an memory error. I projected my raster files and the point which I added as an observervation point into a metric system (EPSG:3857 - WGS 84 ...
9
votes
3answers
21k views

How to export Polygons to CSV with coordinates?

I am very new to QGIS, so please bear with me. I have a ".shp" file, which is contains a set of boundaries for suburbs of Australia. I opened it to QGIS and I would like to export it into a CSV file ...
1
vote
1answer
9 views

QGIS 2.14 Couldn't load plugin 'processing' due to an error when calling its classFactory() method

I'm new here and I have tried to solve this problem that has been a headache for me for quite some time now. I understand that my problem originates from the letters in my username which apparently ...
1
vote
0answers
7 views

Why does QSpatialite show the same table twice?

I have created a point table in QSpatialite, by creating a new table first and then adding a geometry column, as described here. The table shows up twice in QSpatialite, which surprised me a bit: ...
2
votes
1answer
25 views

How to create an animated route map (à la Indiana Jones) in QGIS?

Using QGIS and other free tools, how can I use a Google Maps route to create a route animation in the style of the Indiana Jones movies (https://www.youtube.com/watch?v=5TY5Fp6O5iM)?
1
vote
0answers
19 views

QGIS freezes /crashes and Minidump-Analysis

I am using a QGIS-project with several WMS-Layers(up to 20) and Shapefiles for digitizing. There are random freezes of QGIS(2.14.1) which end up in a crash of the program. Minidumps are not always ...
0
votes
0answers
10 views

Export multiple Layer Definition Files (qlr)

I have a postgresql database with approximately 400 tables. I need to generate Layer definition files (qlr) in QGIS for each individual table. Making this manually would take huge amount of time, so I ...
0
votes
0answers
12 views

Can the DLINK DNS-320 NAS be used as (Q/Arc)GIS server

The title says it all. Can the DNS-320 be used as a GIS server? The NAS supports FTP, webdav, NFS, and AFP. It is already set up as an FTP-server. As I've read that using the FTP-protocol is not the ...
0
votes
0answers
7 views

Atlas generation: get attributes of all features from the current view

I would like to show the attributes of every feature in the current view of the atlas. The background: On every page of the atlas is a map with some markers. The markers have got numbers and a text ...
0
votes
0answers
23 views

Shape File CRS Conundrum

In QGIS I have 2 Shape vector layer files which should overlay approximately one on the other. They have both been downloaded from the same government website (data.vic.gov.au) with the same ...
0
votes
2answers
20 views

How to export vector file in GrassGIS to QGIS

I am using GrassGIS to analyze watershed. I created a stream vector extracted from raster elevation data, how to extract the stream vector file so I can open it using QGIS?
3
votes
0answers
39 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). WMS responses ...
2
votes
2answers
499 views

How to recover deleted data from an edited point layer?

As a newbie in GIS, I didn't fail to make a newbie mistake. While editing a point layer I accidentaly deleted all the introduced data. I duplicated a layer, as it was more convenient (same style and ...
2
votes
1answer
17 views

Qgis select distinct by default on Print Composer

I have a filter on Print Composer that selects "id_mov" and shows figures one by one into the map. This "id_mov" is not unique so different id can have the same "id_mov". Qgis select distinct by ...
0
votes
0answers
13 views

Suitable font size for road network for A0 -A1 print size QGIS

I need to print big paper maps, Im using QGIS to design my maps. But I would like to get advice on suitable front size for road names. With the map as big as A0 I can basically fit all text labels for ...
1
vote
0answers
228 views

Oil palm stand census algorithm? [on hold]

Anyone have experience in oil palm stand census using tree detection algorithm from satellite images in ArcGIS or QGIS? any references for usable algorithm? What is the accuracy?
0
votes
0answers
17 views

Animate panning map in QGIS

I want to create a short video illustrating the route of a proposed road by starting the map in one position, then panning to a number of other points. Is this possible in QGIS using the time manager ...
29
votes
9answers
31k views

Removing small spaces (slivers) between polygons?

I have a set of polygons representing administrative districts. The districts were digitized by hand, and there are small spaces (slivers) between polygons where the polygons should be touching. How ...
0
votes
2answers
22 views

Unable to connect PostgreSQL 9.5 from QGIS 2.14.1

I created new database called "shashi" in PgAdmin III. In QGIS to create new connection I entered following details. In PostgreSQL 9.5 pgAdmin lll Please enter password for user postgres on server ...
-1
votes
0answers
14 views

How to add dynamic text in standalone PyQGIS to reflect iteration of layer names

I am working with a standalone PyQGIS script below with the help of @gcarrillo. The script exports the "boundary, climits, and Div1_Irrig_1956_0" layers as one png. The script then exports the ...
0
votes
0answers
11 views

How to get QGIS to use dedicated graphics card over integrated

does anyone know how i'd be able to get QGIS in either windows or Ubuntu to use the dedicated graphics card over the integrated graphics? I am attempting to speed up the processing of a supervised ...
16
votes
3answers
8k views

How can I iterate over map layers in QGIS python

I'm having trouble figuring out how to iterate over map layers. I can access the currently highlighted layer in the table of contents via iface.activeLayer() but I want my code to operate on all ...
1
vote
1answer
912 views

Opening *.pmf file using QGIS?

I have spatial data that has been put together with ArcGIS for Desktop and exported to me as a .pmf file. How can I use the .pmf file in QGIS? There are about 1000 points and I don't want to have ...
0
votes
1answer
167 views

change the direction of the marker of a line in QGIS

I have a map with three lines. Each has a marker on it. I would like to reverse the direction of the topmost marker. So I open Style dialog and enter the expression "direction" * 180. The value ...
0
votes
0answers
34 views

Compare two columns in QGIS attribute table [on hold]

I have 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 ...
2
votes
1answer
44 views

Sum line lengths for each grid cell in QGIS

I'm trying to get data from a polyline layer into a grid (I've created this with regular points, points to polylines). I guess at first I have to cut all polyline segments at the grid lines and then I ...
1
vote
1answer
49 views

Why does joining all layers in a group not work?

I am attempting to re-join all layers within a group to another layer ("Main.shp") outside of this group. The idea is for users to change values in one of the group's layers. As these layers are ...
1
vote
1answer
34 views

Extract results from zonal statistics [on hold]

I am trying to calculate mean slope in given polygons. I first interpolate my (x,y,z) data to create a raster file and use the terrain analysis tool to calculate slope. Then I use the zonal ...
1
vote
0answers
22 views

QGIS clipper taking forever

As the project requires, I built virtual raster catalog merging two raster DEM files. Because I don't want to use the whole surface of the new Virtual Raster, I went on to clip a desired rectangle. ...
2
votes
1answer
50 views

Calculating total area overlapping specific raster DEM color interval whose boundaries are confined by another vector?

I know this sounds quite difficult, but maybe it isn't for you or at least it shouldn't if I explain it correctly. (I'm using QGIS 2.14) I'd like to know to calculate total area overlapping a ...
6
votes
1answer
81 views

Is it possible to create a round map frame in QGIS Map Composer to create circumpolar maps?

Does anybody know if it's possible to create a round map frame in QGIS Map Composer to create circumpolar maps?
0
votes
0answers
6 views

Qgis2web .tif raster has black line how do i fix this

Im using latest Qgis Essen with latest Qgis2web plugin. I import my .tif raster of filtered and visualized LiDAR data i get at top and bottom of raster a black band. MY raster and project CRS is ...
4
votes
0answers
57 views

QGIS Contours plugin [on hold]

I managed to load osm-data with osm2po, pgrouting, postgis and postgresql into qgis. Then I did a drivingdistance analysis based on cost to finally get the qgis contours plugin up and running. But ...
3
votes
1answer
37 views

Summing pixel values from several raster layers with partial overlap in QGIS?

I have several presence maps (rasters values 1 and 0) from different species. They are all from South America, but they do not have the same extend (i.e., different sizes). So, I am trying to ...
4
votes
1answer
70 views

How to get coordinates of label position or make static labels for each feature

How can I get the coordinates of generated labels on Canvas? Or is there a way to make static labels for each feature? I want the labels to not move when the canvas changes scale or moves. My ...
2
votes
0answers
49 views

Deployment of optical fiber QGIS Python

The subject that I’m working on is the deployment of optical fiber . I have a shapefile which represents a country containing homes. And I have another shapefile representing an infrastructure plan of ...
3
votes
1answer
33 views

Get the full list of commons

In QGIS I've loaded the shape file "province" in which attribute table contains 242 fields (the municipalities of this province) and also two other files downloaded from openstreetmap about hotels ...
3
votes
1answer
326 views

Conflicts while installing postgresql9.3-postgis2.1,QGIS and gdal-bin

I want to use postgresql9.3-postgis2.1 and gdal-bin parallel . I have refer instruction here for installing postgresql-9.3 on ubuntu 12.04. I have install qgis from here While installing gdal-bin it ...
3
votes
1answer
53 views

Coordinate points not lining up with a preexisting map on QGIS

I asked this question once before, but I did not receive any feedback on solving on the issue and I am still confused as to what I am doing wrong. I found a public domain map of Florida counties on ...