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

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1answer
71 views

Qgis 1.9 issues with python [closed]

I already installed the version 1.9 of Qgis and when i runned e Script python on i could this error 'NoneType' object has no attribute 'children' however it works fine on qgis 1.8 could someone ...
0
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2answers
894 views

Is QGIS suitable to create maps with image popups?

I am a new user of QGIS and was wondering if I came across the right software to achieve my goal. Long story short, I am trying to create a map with markups of various buildings. Once I click on a ...
2
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1answer
212 views

How to configure Geoserver WMS to make it printable from QGIS/ArcGIS?

I have installed geoserver 2.3.1 - I am using this to create a WMS of some data held in PostGIS. I can view the WMS in QGIS and ArcGIS, but it won't print from ArcGIS (blank sheet) and in QGIS I get ...
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1answer
121 views

Run fichier.sql in QGIS python console

i use QGIS and i want to know how to run a sql code (fichier.sql) in python console in QGIS I have used this : impost os os.system("psql \i C:/fichier.sql -d test2 ") but it doesn't work Any ...
8
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2answers
2k views

How best to share QGIS data with an ArcGIS user?

I mainly use QGIS and have a large project to complete. Once I am done I'll need submit my data to an ArcGIS user. The data will consist of mostly point and polygon shape files. Is there a best ...
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1answer
2k views

Overlaying lat/long graticules on projected map using QGIS?

I am using an equal areas projection of North America and would like to overlay a lat/long grid. I can do this in the print composer, but only for the coordinates. Can QGIS do a distorted grid for ...
3
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1answer
860 views

Unable to install QGIS 1.8 on Ubuntu [duplicate]

Can someone please walk me through installing qgis on Ubuntu 13.04. I keep getting 1.7 no matter what I do and I would like 1.8 if possible. I am a new Linux user. This was addressed in a previous ...
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1answer
441 views

unable to install qgis 1.9 on Lubuntu 13.04 [closed]

I tried to install qgis 1.9 in my laptop. I use Lubuntu 13.04 (64bit). I used the repository deb http://qgis.org/debian-nightly raring main deb-src http://qgis.org/debian-nightly raring main ...
1
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1answer
222 views

Why does the Clipper tool lack the mask layer option?

Fairly new at QGIS, but everything's gone well so far. I'm running QGIS version 1.8 on a Mac (OSX 10.8) and GDAL 1.10, and other GDAL tools (like Merge and Georeferencer) work just fine. When I ...
2
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2answers
106 views

How to overcome the layer limit on OSX?

I am trying to add many layers to a project in QGIS. After adding approximately 80 layers, QGIS returns this error: "not a valid or recognized data source". There is nothing wrong with the shapefiles ...
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0answers
71 views

How to transfer absolute node position to latitude and longitude? [duplicate]

I am new to gis and also a newbie using QGIS. I have got a Layer with one shape. I extracted the nodes from the shape. Now I have got the absolute X and Y value of my Layer in the attribute table. ...
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1answer
70 views

For each polygon, return yes/no value if it intersects another layer

I have a polygon grid overlaying several other polygon vectors. I wish to visit each polygon in the grid and ask yes/no if each of these layers fall within the grid cell or not. I can do this easily ...
2
votes
1answer
165 views

How to get a correct scalebar in QGIS?

I apparently have a problem with getting meaningful scalebar values referred to a shapefile in QGIS. I think I tried all solutions suggested in other discussions, but still I don't get it. I use QGIS ...
6
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1answer
124 views

Database Diagrammer for PostGIS [duplicate]

Is there a application, or QGIS plugin to generate database diagrams (specifically for PostGIS) similar to the ESRI Diagrammer? Thanks...
3
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1answer
349 views

Why is Spatialite showing dates in MM-DD-YYYY format?

I have a table with a dates column that is formatted in MM-DD-YYYY format, as shown in SQL SELECT statements. I'm using Qspatilite (QGIS 1.8) and Spatialite GUI. When I ORDER BY the date column it ...
1
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1answer
856 views

How to use GDAL-commands in QGIS?

I recently used a GDAL-command working with the OSGeo4W command line, but it does not feel that comfortable. Is there a way to somehow execute a GDAL-command directly in QGIS? Right now the ...
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1answer
39 views

How to cycle thru items in print composer?

In print composer I have many items placed on the "paper". These items include borders, one map, bar scale, logo and an arrow. When the items overlap each other I am only able to select the item on ...
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1answer
93 views

Help with trying to track ice and polar bears on a map. No idea where to begin

I was asked create a little google map showing the location of Polar bears. I've been given the location data in lat-long format. For each bear I've been given a file containing the following ...
2
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0answers
139 views

QGIS - Android, loading a .tif file

I have a .tif file I would like to use as my base map on the Android version of QGIS. However, when I try and load it as a raster layer, it states that this is not a correct raster source. Is there a ...
0
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1answer
101 views

Strange problems with project crashes and bad:alloc in QGIS 1.8 linux

during last days I had to prepare some maps from field data. I mainly worked with point shapefiles and openlayers map background. After some time I always noticed some problem like just partial ...
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0answers
198 views

Oracle Spatial support QGIS 1.9-0-Master (Ubuntu)

I just installed QGIS 1.9.0-Master (Build 480) on a Ubuntu virtual machine. I am running/compiled against GDAL/OGR 1.9.2. My question is why I cannot add Oracle Spatial Layers as I am able to do ...
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2answers
112 views

How to clear attribute columns from a Shapefile?

I want to clear all columns from a SHP. Only need geometry of features. I use QGIS and Sextante with grass and saga. Is there any tool for this job...
0
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1answer
366 views

Which CRS fits “Lambert Conformal Conic Projection, Standard Parallels 46.40 and 49.20”?

I am trying to georeference a VFR chart in qgis and I can't figure out which CRS to use. Map projection - Lambert Conformal Conic Projection, Standard Parallels 46.40 and 49.20. Any ideas which ...
2
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3answers
730 views

How to add QGIS Python API Intellisense support in Aptana Studio3/Pydev

I'm developing QGIS plugins using PyDev in Aptana Studio 3 and I would like to know if it's possible to make it aware of the QGIS API and add some "intellisense" functionnalities when programming. For ...
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2answers
416 views

Georeference IMG file in QGIS

I have a problem: I'm trying to georeference a satellite image (ASTER, ERDAS Imagine file *.img) in QGIS. I have georeferenced with QGIS before and never had any problems. The file is georeferenced ...
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1answer
83 views

No legend in QGis Web Client

I have a QGIS Web Client working, but it lacks a legend and metadata panel as is shown here What do I need to have the referred legend panel?
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0answers
40 views

can the Identify Features button in QGIS list data in natural order

Is there anyway to get the Identify Features button in QGIS to list my attribute data in their natural order, NOT in alphabetical order?
2
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1answer
265 views

Solution for slow display of postgis-tables ? (qgis 1.8 + postgis 2.x)

I have the problem that my postgres-tables are displayed very slow when I scroll them in QGIS. I have no problem with other tested GIS (e.g. UDig, GVSig, ArcGIS). The number of objects isn't large ...
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0answers
194 views

SEXTANTE runalg and QgsVectorLayer issue

I'm trying to make a script for converting polygons to lines. But I'm having some issues while generating temporary layers. In this script, I iterate through all the features of the input layer to ...
4
votes
3answers
757 views

How to find the polygon inside which a point lies?

I have a layer with polygonal features. Each feature has attributes and values. I also have a list of co-ordinates and I would like to know which feature (or polygon) the co-ordinates lie in. Could ...
0
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1answer
62 views

How to Create a Note System inside QGIS

I need to make something similar to a note system, where i can create a feature that will give me something similar to a note system (or a square in the map linked to a feature that will only show ...
1
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1answer
268 views

QGIS Crashes when I try and overwrite a shapefile using QgsVectorFileWriter.writeAsVectorFormat (QGIS 1.8, MacOS 10.7.5) [closed]

I'm somewhat new to this, and working on a plugin. My plugin will create a points memory layer, which is then written out as a shape file using QgsVectorFileWriter.writeAsVectorFormat. self.writer = ...
4
votes
2answers
317 views

How to convert numeric fields into strings with leading zeros?

I'm trying to define an action in Quantum GIS using on of my fields but I have some problems with its format. I have a numeric string like '5' and I need to have a format like '005'. I've tried ...
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1answer
116 views

Why new feature disappears when editing polygon?

I try to create internal polygon within existing polygon. After I created a ring, I add a new feature inside the ring. Suddenly, this new feature disappears. I confirmed that this feature went to the ...
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1answer
74 views

How do I put label inside polygon at any scale in QGIS 1.8.0

I would like to put labels inside polygon anytime and any scale. I'm using "Labeling" from the toolbar. Although I tried all types of the placement from the advanced tab, some labels still fall ...
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2answers
316 views

How to write a QGIS regex for rounding to two places after the decimal point?

In QGIS field-calculator round() is not working in QGIS 1.8 so I try to do the following with a regex: I'd like to keep the first two places after the decimal point - where do I go wrong? ...
2
votes
2answers
124 views

Sextante modeler feature selection

I am trying to select grids (polygon geometry) that intersect with a building layer. I can do it by using "Select by location" tool and then I generate centroids from the selected grids. There is no ...
3
votes
2answers
380 views

How to add layer/raster with specific position in the QGIS layer list?

I use addRasterLayer(rast,'Name') but this adds the raster to the top. It is possible to set position when I add raster at once? Is it possible??
1
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2answers
78 views

Error reported when trying to import prj for data points in New Brunswick Canada into QGIS

I have data points recorded with a Trimble GIS. The projection is New Brunswick Sterographic Double Projection, which as near as I can find via a Google search is EPSG:2953. However, when I try to ...
1
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1answer
570 views

Rasterize vector layers with different extents into identical raster grids with QGIS

I am working on a quite simple spatial potential analysis using QGIS. I have some ArcGIS knowledge, but I am new to QGIS. My task is to identify the functional inner city of a region based on ...
0
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1answer
137 views

Grass algorithms doesn't appear in the sextante toolbar in QGIS

I was having problems with some sextante algorithms in my QGIS 1.8, something related with wrong "os" name, I found a post in which reccomend to install the 1.9 master version. I clean uninstalled ...
2
votes
2answers
110 views

Are there any known issus opening a QGIS Desktop project on Android?

Does anyone else have trouble when they try to open a project which was worked on in the QGIS desktop version 1.8 (I understand this is the most up to date version for the desktop) and try and open it ...
2
votes
2answers
901 views

QGIS, point clouds and photogrammetry

I'm trying to use photogrammetry and Structure from Motion to record buildings, and I'm looking for a way to bring these into a format usable in GIS, in particular pointclouds and models of terrain, ...
0
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1answer
137 views

How to setup and use GRASS?

Previously I've asked an question and Micha gave me a helpful advice:How to find the watershed area for each point in the river network using DEM? After getting the useful DEM file, I began to setup ...
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1answer
158 views

Qgis: Select multiple layers in sql-Filter [closed]

I have a Shape-File with lines of streets. Now I want qgis only to show the categories: Type: primary and Type: secondary and Type: motorway. How do I do this? This doesn't work: "type" = 'primary' ...
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1answer
176 views

how to rename the band-names of a layer stack?

I created a layer stack of 20 images (all GTiff-files) using the gdal_merge tool in QGIS, available at: raster > miscellaneous > merge The result is a GTiff layer stack of the 20 images, but ...
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0answers
303 views

Create a polygon shapefile using point as boundary

Following have two problems: I am now have 4 point in a shapefile and I want to set the point's coordinate for boundary of a polygon The points are xmin, xmax, ymin, ymax that can just be a ...
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0answers
1k views

Vector Intersect QGIS (1.8.0) Gives empty shapefile

I am trying to find points that fall within a polygon. Both layers are vector ESRI shapefiles. I used the fTools based intersect under Vector>GeoprocessingTools>Intersect. The output is an empty ...
2
votes
1answer
197 views

How to store attributes of a large shapefile in a list?

I am trying to store the attributes of a shapefile into a list. With following code it works for smaller shapes: addA = [] While provider.nextFeature(feat): attrs = feat.attributeMap() for ...
2
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0answers
222 views

Divide polygon layer by point layer in QGIS?

I have two layers - one polygon layer that is a buffer of a road layer, and one point layer that shows certain locations along that road. What I want to do is to divide/split the polygon layer at the ...