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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1answer
22 views

QGIS Python console - save image from bounding box

I want to save an image from QGIS but the save image functionality feels limited. My question is if it's possible to use the python command line to save an image at a specific zoomed in scale and to ...
2
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0answers
22 views

How to add super/sub script on a QGIS text annotation?

How do I add super/sub script on a QGIS text annotation? For example, 44.95 mi^2
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1answer
76 views

Why is feature.geometry() None in my user-defined expression function?

I'm trying the user-defined expression functions for QGIS, as listed on Nathans blog: http://nathanw.net/2012/11/10/user-defined-expression-functions-for-qgis/ I always get the feature.geometry() as ...
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0answers
12 views

Labels on the QGIS WMS layers are not drawn according to the style definition

I have an issue regarding the styling of labels of WMS layers using QGIS server. I can't seem to get them to display how I want. What I did: create a QGIS project (2.2 on Mac) with a layer from a ...
2
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0answers
40 views

Filtering MSSQL layers in QGIS doesnt work

In my QGIS Plugin I am filtering layers with this Python code: FeatureIterator = layer.getFeatures( QgsFeatureRequest().setFilterExpression ("Fieldname='SomeValue'") ) for feature in FeatureIterator ...
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0answers
31 views

Is it possible in QGIS print composer to include a numeric scale in an html box?

For work I always have to create a table with my name, project name, date etc. into my map layouts. I also need to include the scale like "1:150000" in that table. So far I am solving that by ...
1
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1answer
32 views

Deleting vector lines beyond image extents using QGIS?

I am using QGIS 2.2 I have one vector line layer (roads) that stretches beyond my base image (see below). I wish to have the roads "clipped/trimmed or deleted" right at the edge of the image's ...
3
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0answers
34 views

How to export data from sql server into shapefile in the decimal format in QGIS 2.4?

The last couple of days, I have been working on exporting data from SQL to a shapefile in QGIS 2.4. While converting into a shapefile, the data type changes automatically from Float to Integer in the ...
2
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1answer
39 views

Creating a graduated buffer in QGIS

I'm attempting to map cell phone towers and their range in QGIS. I'm wondering if it's possible to create buffers which change color intensity according to their distance from a central point. The ...
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0answers
6 views

Pyqgis 2.2 : get signal on feature added : error message

For my pyqgis plugin 2.2, I try to: def logFeatureAdded(self,layerId,addfeatures): message = str(layerId) + " has features added: " for feature in addedFeatures: message += str( ...
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2answers
53 views

Pyqgis 2.2 : zoom to layer extent?

Regarding my plugin pyqgis 2.2, i can load a vector layer succesfully. But when i try to zoom to the layer extent it does not work. How to do in order to zoom to the layer extent? Thank you very ...
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0answers
32 views

Get signal on edited feature?

Regarding my pyqgis plugin 2.2 , I've implemented signal on a vector layer event successfully. For instance, whenever i create a new feature, i can read a new basic message appeared via QGIS logging ...
4
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2answers
225 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.
2
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1answer
63 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
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2answers
42 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
36 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
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1answer
87 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 ...
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0answers
32 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
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1answer
71 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 ...
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0answers
89 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
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1answer
46 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
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1answer
44 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 ...
3
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1answer
75 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
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0answers
41 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
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5answers
142 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:
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3answers
92 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
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0answers
20 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 ...
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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
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1answer
22 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 ...
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1answer
56 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 ...
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0answers
33 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
20 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
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1answer
49 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
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1answer
59 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
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1answer
47 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
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1answer
33 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
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0answers
46 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
56 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
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1answer
79 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 ...
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0answers
24 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
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1answer
58 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
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1answer
48 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 ...
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0answers
32 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
43 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
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1answer
277 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
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1answer
47 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 ...
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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 ...
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0answers
53 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 ...
1
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0answers
33 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 ...
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0answers
25 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 ...