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

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1answer
332 views

qgis how to split a field into field1 and field2 - comma is separator

How to split a field into field1 and field2 - comma is separator in field? Tryed to use field calculator /Jan
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1answer
888 views

How to export x/y coordinates from geodata?

I am a novice about Geographic Information Systems. Now I want to get real line segment dataset to do an experiment. So I searched it, and found the site that includes the real data: ...
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237 views

How to write an address search plugin?

I am migrating some users from MapInfo to QGIS, and before they sign off on it, they want a very simple address search in the same way that we currently have one working in MapBasic. I;ve been having ...
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5answers
8k views

How to create points in a specified distance along the line in QGIS?

I want to use QGIS creating points along the line, but in specified distance. I found two GRASS tools in SEXTANTE Toolbox: v.to.points v.segment I tried v.to.points, setting the maximum distance ...
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1answer
71 views

Combining shape files and exporting

I am new to QGIS and I need to know if if is possible to merge 2 shapefiles that do not have a common field and then export to Excel. Example of shapefiles: Countries broken up in to Municipality ...
2
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1answer
800 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 ...
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0answers
75 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 ...
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1answer
51 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?
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1answer
5k 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 ...
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1answer
2k 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 ...
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1answer
157 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 ...
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1answer
515 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 ...
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3answers
690 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 ...
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2answers
57 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 ...
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1answer
1k 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 ...
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1answer
105 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 ...
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1answer
237 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 ...
3
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1answer
5k 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 ...
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2answers
126 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 ...
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2answers
2k 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?
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1answer
116 views

Creating plugin in QGIS to access PostgreSQL? [closed]

i want to develop a plugin in QGIS to access to my database in postgres : i want to import a file.sql that contains my SQL Code in a textbox , and execute this code to assign myd database.
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2answers
233 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 ...
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2answers
1k 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 ...
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1answer
1k 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 ...
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3answers
652 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 ...
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0answers
87 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 ...
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1answer
77 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
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1answer
591 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 ...
2
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1answer
1k 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 ...
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1answer
168 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 ...
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0answers
106 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
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1answer
119 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 ...
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0answers
236 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 ...
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3answers
1k 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 ...
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5answers
2k 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 ...
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1answer
1k 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 ...
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1answer
91 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 ...
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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. ...
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1answer
253 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 ...
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0answers
72 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 ...
3
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4answers
2k 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
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1answer
72 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 ...
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2answers
2k 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
336 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
141 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 ...
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2answers
4k 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
941 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 ...
2
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1answer
499 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 ...
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1answer
329 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 ...