Version 2.0 of QGIS, is a user friendly Open Source Geographic Information System (GIS) desktop application licensed under the GNU General Public License.

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3
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2answers
151 views

Best Landsat-5 TM band combination for detecting fire scars

I am looking for the best band combination with Landsat 5 imagery to detect fire scars.
1
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1answer
42 views

Qgis - Labels automatically resize to fit within the polygon

The question of my problem is simple, I want to make labels automatically reduce to fit within the polignos. Type the biggest size is 12 and goat decrease the size to be restricted to the limits of ...
1
vote
2answers
32 views

How to export a high-res world map image?

I'm trying to get some (very) large world map images (think 10k x 10k pixels etc), but can't seem to do it with QGIS, and would appreciate any help. Manually adding smaller images to a larger one ...
0
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1answer
26 views

Update OSM data already imported in qGIS

qGIS makes it really straightforward to import data from Open Street Map (there's a good tutorial here). However, despite this process is relatively straightforward, it takes some time to download the ...
1
vote
1answer
54 views

QGIS 2.4 (and 2.0.1): How to uninstall/reinstall a plugin where uninstall is disabled?

Plugin Raster->TerrainAnalysis->slope which had initially worked, started showing what another questioner referred to as a "crazy histogram": qgis2 slope analysis from NED data gives crazy histogram ...
0
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0answers
31 views

View tiled shapefiles in QGIS 2.0 or greater as one layer?

I have tiled vector data in shapefile format. I need to view them in QGIs 2.0 or greater. I was not able to find any usable solution (merging is not the way). I have tile indexes, which I use for ...
0
votes
1answer
67 views

QGIS to solve projection mystery in Postgresql

I downloaded some data from local agency. Per QGIS 2.2, I defined the projection to 'EPSG:3587 - NAD83(NSRS2007) / Michigan Central' in postgresql (maybe ArcMap). Data is in Postgresql 9.3. I am ...
1
vote
0answers
82 views

Invalid geometry

I'm working on some shapefiles in both ArcGIS 10.2 and QGIS 2.0. I have 3 files which I have cleaned of self intersections in ArcGIS using Repair Geometry. I have also checked for Overlaps using the ...
1
vote
1answer
34 views

How to interact with other layers in a QGis Python init function?

I am using QGis and making a Python script that sets the Python Init function to a custom UI file. I have a function with the following signature: def formOpen(dialog, layer, feature): ... I ...
0
votes
1answer
28 views

QGIS saving shape file wrong utf8 encoding in DBF?

I'm using QGIS for some SHP processing. When i save the file, the DBF utf-8 text encoding is wrong: Source DBF à0è0ì0ò0ù0 HEX: C3A0 30 C3A8 30 C3AC 30 C3B2 30 C3B9 30 Saved DBF à0è0ì0ò0ù ...
2
votes
1answer
66 views

Is it possible to rotate the *canvas* in QGIS

Can the canvas be rotated so north is pointing in some other direction than defined by the projection? This question answers with respect to the composer, but not the canvas. There is a related 5 year ...
2
votes
0answers
33 views

Label pie chart in QGIS

1.How can I label the pie charts in QGIS so the labels are written under the diagrams? My pie-charts are representing localities: such as villages, towns, cities. So, I want that their names appear ...
3
votes
5answers
130 views

How to place labels under a vector layer?

I want to place the labeling under a layer. In QGIS 2.2 apparently the label appears automatically at the top. Can someone help me. (see attachment) example:
1
vote
3answers
83 views

How to measure areas using an official CRS which is not available in QGIS?

I am very new to QGIS and doing a project on Glacial Lake Outburst & Flooding (GLOF). I am trying to find the area of a lake using images from Google Earth 7.0.3.8542. I am using the WGS84 CRS ...
0
votes
0answers
16 views

take record from ms-access using python and show it in Qt

I have a ms-access database and i try to make QGIS plugin that take record from table and show it in Qt, database have format like this : NO Skala 1 Skala2 Rekomendasi ...
0
votes
0answers
23 views

Ground Sampling Distance

I am quite new to QGIS. I got an Orthophoto under QGIS. I want to calculate Ground Sampling Distance values of this image. Does anyone know how to do this under QGIS? I am using QGIS 2.2.0. I even ...
0
votes
1answer
20 views

Installing QGIS from non-packed file

I've been asked a question regarding installation of QGIS from an unpacked file on Windows, as the organization that wants to install it needs to run a thorough malware scan. Currently, the ...
0
votes
1answer
43 views

How to get QGIS layers style in a single file

I have layers on my QGIS project. Rivers Water pipes Gas pipes ..... I set the color, width, size of these layers. All layers are different style. I want to use these styles in geoserver. I have ...
0
votes
0answers
23 views

QGIS-Merge or create virtual raster files without losing definition?

I am new to QGIS and relatively new to GIS (so please be aware I am not that familiar with a lot of technical terminology). I am trying to merge several tiff files as either a virtual raster or a ...
0
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0answers
17 views

QGIS translate BAG surface to XYZ

I have a BAG (Bathymetry Attributed Grid) from NOAA which I wish to export to XYZ. The grid imports fine as a raster and plays nicely with most of the raster tools that I have tried. It does, ...
1
vote
1answer
46 views

Create a point C from point A in the direction of point B

I am very new to QGIS and GIS in general. I hope someone could help me figure this out. I have pairs of coordinates which signify the start and end of a transect line. I am trying to adjust the end ...
0
votes
1answer
49 views

Error with existing OSM QGIS style

I'm trying to use existing OSM style file like those of AsgerPetersen (https://github.com/3liz/osm-in-qgis/tree/master/styles/openstreetmap/geofabrik) or anitagraser's ...
0
votes
1answer
36 views

How to split a line at a vertex in QGIS 2.2? [duplicate]

Is there a plugin out there that will split a polyline at vertexes? My arcgis license isn't high enough to run the tool. I'm using 2.2.
0
votes
1answer
28 views

How to edit a vector layer extent?

I'm working on QGIS 2.2, and I would like to make a vector layer extent bigger (thus the clip option is not suitable) to match exactly my mask layer extent. I would like the new added area to be ...
0
votes
0answers
36 views

“qgis-bin.exe has stopped working” whenever I try to open layer properties

I am using QGIS Desktop 2.2.0 on Windows 8. Whenever I try to open up any layer by double-clicking on it, a window pops up saying that qgis-bin.exe has stopped working. I have tried using different ...
2
votes
1answer
50 views

Connecting to MSSQL 2008 R2 with QGIS 2.0.1

There have been questions related to this, but some of them seem out of date or no one has asked. I'm trying to connect to SQL Server 2008R2 using a MSSQL connection in QGIS. I'm not exactly sure if ...
1
vote
1answer
54 views

How can I open a .pmf file with QGIS?

I have spatial data that has been put together with ArcGIS and exported to me as a .pmf file. I'm spearheading a complete move from ArcGIS to QGIS and trying to make our old data still useful and able ...
0
votes
0answers
17 views

Serial Int Primary Key not recognized by QGIS 2.2.0

I have a table "lines" stored as MULTILINESTRING features in PostGIS 1.5 ---------- -- Begin Table Definition: CREATE TABLE lines( gid serial NOT NULL, geom geometry, CONSTRAINT roadgeo_can_pk ...
0
votes
1answer
54 views

Developing QGIS plugin on Mac - GDAL

I'm developing a plugin for QGIS called DEMtools. It runs fine on my linux machine, but is causing me headaches when run on Mac OS X Mavericks (surprise, surprise). I keep getting segmentation faults ...
0
votes
1answer
36 views

Labels disappear zooming IN in Qgis 2.2 Composer?

I have a simple map with a polygon Layer of 2 Polygons. Labeling is turned on, so is the option of "Show all labels for this layer, even if they collide". In the print composer the labels keep ...
0
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0answers
26 views

QGIS Intersecting polygons

I have two different shapefiles, each with polygons for one country. I want to find out which polygons of one shapefile are part of the polygons in the other shapefile. For example Polygon 1 of ...
1
vote
1answer
42 views

Why is “Add feature” of the GPS Information tool inactive for some of my PostGIS layers?

Sorry If I rise it again on this forum but I couldn't find any info on limitations/requirements of "GPS Information" tool for QGIS (2.2.0) against data layers. For some layers I'm able to collect ...
0
votes
1answer
161 views

How to put North Arrow and Scale on map in COMPOSER in QGIS 2.2.0

I am new to QGIS and the questions asked and answered here about the North Arrow do not seem to help me solve my problem below. In the main mapping pane of QGIS 2.2.0 Valmiera, I can add the scale ...
0
votes
1answer
42 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 ...
0
votes
0answers
16 views

How to make DTM Qgis-grass

Good evening, I need help. Should I create a dtm of an area in the province of Vicenza. It 's the first time I try, I tried the tutorials on the Internet but I could not understand how to do it. Could ...
0
votes
0answers
45 views

Accessing CRS info with pyqgis in a standalone application

I'm currently having trouble accessing and defining CRS information in a standalone application. I've read the API documentation and have tried it in the python console in QGIS 2.2.0. The python ...
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vote
0answers
30 views

Map tips Flashing

I am using some very basic html in a point shapefile's layer properties to display a photo. <b> [% "filename" %] <br> <img src= [% "filepath" %] /> <br> It will display ...
0
votes
0answers
20 views

Call post-execution command manually in QGIS Processing

I wrote myself a Processing Script and it works fine. Now i want to style the outcome (a new raster layer) with a QgsColorRampShader(), but the problem is that Processing adds the output after the ...
0
votes
1answer
34 views

QGis 2.2 layer buggy in 2.3 master

Wondering if anyone else can reproduce this kind of problem? I dual boot windows 7 and ubuntu 13.04 with QGis on both. Have updated QGis to latest on both, and created a layer in my project in 2.2 in ...
3
votes
2answers
121 views

How to connect points (bus stops), which don't lie on the lines (LINESTRING), to a network?

I need to connect bus stops (points) to a network layer (OSM data). These bus stops do not lie directly on the lines (see screenshot) nor should their location be moved. I use PostGIS, pgrouting and ...
1
vote
1answer
310 views

How do I add and view *.ecw raster images in QGIS 2.2.0 on Ubuntu 14.04 LTS

How do I make ECW files work in Quantum GIS on my Ubuntu 14.04?
1
vote
1answer
47 views

Finding Code in QGIS Select Features Toolset

Can anyone tell me in what directory the pre-installed Python scripts for the QGIS selection tools (i.e., Select by Point, Select by Polygon) are found? I am using on a Windows 7 installation of QGIS ...
0
votes
1answer
65 views

Where can I find topology-related algorithms used in QGIS?

I have shapefile with polygons and I test topology - overlaps, duplicates and gaps. I tested it in QGIS and now I have to describe algorithms, which uses QGIS for this rules. I must write research ...
1
vote
1answer
62 views

How to batch interpolate many shp´s to DEM

Here´s the problem: I have about 40 shapefiles of contourlines (type line) and I need to interpolate them to create DEM's (tiff, or better some grid format). To do so, some batch scripting would be ...
0
votes
0answers
48 views

error when running a script for clipping a group of rasters on QGIS 2.2 OS X 10.9

I'm trying to clip a group of raster files on QGIS 2.2 (KyngChaos) running on OSX 10.9. When I run the script I get an error related with the location of the files. I'm wondering if this is something ...
1
vote
0answers
44 views

Programmatically selecting features by polygon

Expanding upon this post how could you use QGis to programmatically draw a selection polygon and select features within the polygon? I have been using QgsMapToolEmitPoint(self.canvas), to find and ...
1
vote
2answers
40 views

Where are QGIS application setting file(s) stored?

I have some application settings (Windows/QGIS v2.0) that I would like to pass to other users (such as those settings defined under Settings menu>Options>Rendering tab). In ArcGIS they are stored in ...
0
votes
2answers
98 views

How to make multiple qgis mapbook pages in 1 pdf?

Is it possible to export a mapbook in QGIS 2 with multiple pages all in one PDF? Thanks
0
votes
0answers
16 views

How hide vertices on polygons in QGIS

I am using QGIS 2 to make a map and one of the layers shows vertices along its outer delineations. I would like to hide these vertices and can't find how. Can you please help?
2
votes
0answers
63 views

Programmatically change layer position in the table of contents (QGIS)

I am trying move/position a layer to the bottom of the TOC by using addTopLevelItem on all other layers. I unsure how to reference the layers as QTreeWidgetItem's. def bg_bottom_level_item(self): ...