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

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2
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1answer
361 views

Can I view the Geoserver zoom level in QGIS

I am creating some sld's using QGIS for use in Geoserver and wanted to view the current zoom level so that I can then define it in the zoom level. Is this possible? For example <!-- Local ...
2
votes
0answers
69 views

How to find the total number of people who live in a ward 5 miles or less from a closed bank?

I am currently using QGIS 1.8.0 and need some assistance with a 'Select by Location' query. I have a data layer showing all UK wards (containing data on ward names, areas and populations) and another ...
0
votes
1answer
45 views

Is it possible to install qgis plugin in a specific non default directory?

Is it possible to install a plugin to a specific directory e.g. D:\folder instead of the default one .qgis\python\plugin? Furthermore, can QGIS access plugins from different directories and folders?
2
votes
1answer
1k views

How to manually edit point coordinates in QGIS?

Is there a tool for shapefiles or a QGIS plugin available, which will enable me to edit the coords of a point manually ? ("tool" -f1 "Tsunami Gauge"-move x1.abcdef -to x2.ghijkl) I do have ...
1
vote
1answer
357 views

How to create histograms

I am very new at using GIS data and in particular QGIS (1.7.3) and I need some help to produce histograms regarding my data. I have a great number of data about an algae density collected in 8 ...
1
vote
1answer
94 views

How to paste pictures into data frame?

I have a polygon feature class and I want to trace (select with a polygon) a picture that is solely comprised of a couple of interlocking letters. In ArcMap when I would do this I would simply drag ...
2
votes
1answer
248 views

Confused about reprojecting Google Maps (latlong) to Irish Grid TM65

Trying to transform points taken from Google maps (as latitude and longitude) to Irish Grid TM65 using the spTransform in R, and I'm confused on something. Everything I find on the net tells me ...
0
votes
1answer
325 views

Getting error in compiling make file for plugin build in qgis 1.8

I am using QGIS 1.8 for building plugin. For developing i am using following ref this link example. where in this step 6 where compile the makefile in OSGeo4W. gives error pyuic4:command not found. I ...
1
vote
2answers
48 views

Cannot See Georeferencer Results

I am working in QGIS 1.8.0 Lisbosa. Currently I am trying to georeference a building blueprint in a .TIF format to a Google Streets layer. After selecting four points (the corners of the building), I ...
1
vote
1answer
511 views

Printing High Resolution Open Maps?

I hope my question does not silly but I am QGIS rookie and am really struggling to find a solution. I have the added the Google Street Layer to my project on top of which I worked with my points and ...
1
vote
1answer
64 views

Drag zoom in Quantum GIS missing?

There are like ten zoom-tool icons but no one seems to do what I look for - to zoom to a rectangle that will be created by dragging mouse from top left corner of it to bottom right corner of the ...
2
votes
1answer
137 views

How to open a .k format (I think it is made with IDRISI product) with open source software

I just received a .k file which I know it was made with a IDRISI software (I do not know which). I searched the web and I did not find many information on this format apart for a very essential page ...
2
votes
1answer
1k views

How to resize shapefile features proportionally in QGIS?

In Quantum GIS (1.8.0-Lisboa) on Windows (OSGeo4W Install), how exactly would you resize a feature proportionally. The only way I've found to do this is by hand using either the Freehand Editing ...
2
votes
2answers
118 views

Looking to run QGIS basics course, are there any legal requirements?

I've been asked by several people to run a QGIS basics course as there is a real demand for some of our subcontractors to be able to manipulate their own data but at a very simple level. My question ...
7
votes
1answer
530 views

Is there a QGIS equivalent of the erase tool in ArcGIS?

Is there a QGIS equivalent of the Erase tool in ArcGIS for Desktop?
3
votes
2answers
153 views

How to create a hectare raster from vector input data in QGIS

I have a vector file containing points with an attributed value (no. of employes at that location). I need to create a hectare raster with the sum of employes for each grid cell. I'm using QGIS and ...
0
votes
2answers
526 views

How to install Shapely, but got stuck into Python language

I have a MAC OSX 10.7.5 and am trying to learn how to use QGIS. Following a couple of tutorials I came to know I have to install shapely. I followed the instructions by the multi-cited ...
2
votes
1answer
579 views

How to open *.aux file in QGIS?

My university desires to switch from using ArcGIS to using QGIS and therefore I have to figure out whether the exercises that are used in lectures can be performed using QGIS. I have an .AUX file ...
1
vote
3answers
195 views

How to calculate line centroids for 460,000 features?

I have a large shapefile of lines, and want to run a mmqgis function (Plugins --> mmqgis --> Modify --> Convert Geometry Type.) The problem is the file is very large and crashes the program. What ...
1
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0answers
68 views

Problem with nviz and QGIS 1.8

I am using QGIS 1.8.0 on Windows 7. In nviz (via SEXTANTE), after selecting an altitude layer and the GRASS region extent, I hit OK; the progress bar quickly reaches 100% and then absolutely nothing ...
1
vote
1answer
68 views

How to move a value from field1 to field2 using Field Calculator?

Hi I would like to move value in field1 to field2. Purpose is to after that delete the column 'field1' to get a better column naming standard /Jan
1
vote
1answer
257 views

Import garmin Topo map to QGIS

I would like to import my Garmin Topo Maps to QGIS. I want to use the Topo Map as a Layer to create Shapefiles. Can anybody tell me if it is possible to import the Garmin maps including waypoints as ...
1
vote
1answer
377 views

Label callouts in QGIS

Has anyone been using callout labelling with QGIS, either trunk or stable? Used for clustered points. That means the point stays where it is, the label maybe moved if required and a leader (plain or ...
1
vote
1answer
135 views

QGIS 1.8 tries to use UTM in spite of geo projection file

I'm wrestling with a problem that I am sure I've created for myself, but cannot resolve. I received a set of shapefiles that were expressed with UTM, and I want them to use lat/lon. QGIS will do the ...
1
vote
0answers
73 views

Unable to Add Features to PostGIS Layer in Quantum GIS 2

I am testing out Quantum GIS 1.9-master and I've noticed that I am only able to add features to a PostGIS 2.0 layer if that layer is in a schema with the same name as my login. For example, if my ...
2
votes
1answer
56 views

using “abs()” function in QGIS field calculator?

I'm pretty new to GIS in general and I'm trying to take an absolute value of the difference between two fields in field calculator when creating a new field, but using ABS () returns an invalid ...
1
vote
0answers
144 views

problem overlaying osm with os-derived data in QGIS - both British National Grid

I am currently working alongside city council datasets derived from Ordnance Survey; this is projected in their ArcSDE system as "British National Grid" or EPSG:27700. My problem is that I am trying ...
1
vote
3answers
539 views

How to setup a debugger for QGIS Plugin development?

As the title of the question implies, I wish to know how to set up a QGIS Python Plugin Debugger so that I can develop plugins more efficiently. Any information regarding this would be much ...
5
votes
2answers
395 views

Changing Data Source of Layer in QGIS

Is there a way to source a shapefile to a layer file in QGIS much like how you do this in the properties of an ArcGIS layer? (i.e. Go to layer properties, source tab and then just depress the 'Set Dat ...
1
vote
1answer
473 views

Import SketchUp created KML contour lines model to QGIS

There's a neat trick to create contour lines based on the GE 3D terrain using Sketch-Up. The resulting KML however is a model I have looked at ways of importing KML layers to QGIS, like it was ...
1
vote
1answer
68 views

Error output with gdalwarp

Following is my raster file and mask shape file files I use qgis 1.8.0 to clip the raster with shape file by gdal tools but after I run warp in gdal tools it's just give me no data in the output ...
0
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0answers
31 views

Qgis dynamic web maps [duplicate]

I am new (Mac lion 1.8.3) Qgis 1.8 user . It was very easy till now to make a map. But now I am facing the next step that is out of my knowledge. I want to publish dynamically the map to my web page. ...
0
votes
1answer
147 views

QGIS plugin WORKS under Windows but NOT under Linux. How to get fîle path properly under Linux?

I am currently working on a QGIS plugin which depits node to node discreet flows. Let' say adaption of Tobler's Flow Mapper to QGIS. Plugin currently tested and working under Windows. But not under ...
0
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0answers
55 views

How to simplify vector lines into an overlaid grid in QGIS?

I'm a relatively new user with GIS software (primarily QGIS) and I'm sure this is probably quite simple but I've been trying to find an answer for ages! I have transportation network data for an area ...
1
vote
2answers
581 views

Can I use QGIS with Qt5?

I want to use QGIS with Qt 5.But i don't know the exact relationship between Qt and QGIS.Will there some problems if i use qgis with qt5 or it will not depand on it...
1
vote
1answer
69 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
votes
2answers
598 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
votes
1answer
182 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 ...
0
votes
1answer
115 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
votes
2answers
1k 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 ...
1
vote
1answer
1k views

Overlay lat/long graticules on projected map 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
votes
1answer
817 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 ...
1
vote
1answer
411 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
vote
1answer
181 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
votes
2answers
93 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 ...
0
votes
0answers
70 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. ...
1
vote
1answer
66 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
147 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
votes
1answer
111 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
votes
1answer
247 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 ...