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0
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0answers
3 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 ...
3
votes
0answers
37 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 ...
0
votes
2answers
11 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? Thanks
2
votes
2answers
495 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
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0answers
12 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 ...
0
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0answers
10 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 ...
1
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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
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0answers
10 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 ...
1
vote
0answers
13 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
2answers
20 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 ...
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0answers
9 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
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0answers
10 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
911 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
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0answers
33 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
41 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
20 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
39 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 ...
5
votes
1answer
77 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
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0answers
5 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 ...
1
vote
1answer
192 views

trying to calculate volume using r.volume GRASS - error message

I am trying to calculate volume using GRASS plugin in Qgis using module r.volume however the attached error message keeps appearing. Any ideas?
6
votes
4answers
2k views

Matching GPS tracks

I'm looking for a proper way to process multiple GPS tracks (so time ordered list of lat/lon points) and match/classify that segments, that are covered by multiple tracks: So it's not about ...
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 ...
9
votes
1answer
7k views

Is there any other option to display DMS grid and graticule in QGIS Print Composer?

Is there any other option to display DMS grid and graticule in QGIS Print Composer, since there is no plugins available yet?
4
votes
1answer
42 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: ...
-1
votes
1answer
33 views

How can I import KML from ArcGIS MapServer into QGIS 2.8.3?

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 ...
2
votes
1answer
2k views

How to reclass a raster with reclassify grid values 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
191 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
532 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
206 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 ...
1
vote
0answers
16 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 ...
0
votes
0answers
17 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
35 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 ...
1
vote
1answer
20 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
53 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
35 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