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

learn more… | top users | synonyms (1)

3
votes
3answers
2k views

How to transform data points from WGS84 to NAD27?

Preface: I have a set of lat and long data points from Google Maps, which I believe are in WGS84. My project data is in NAD27(BLM14). These points are in West Texas, where NAD27 differs from WGS84 by ...
1
vote
1answer
265 views

How can I get the plugin manager “get more” icon?

I am fairly new to QGIS and i was looking to add more plugins to the core provided in version 2.0 I read the user manual provided by QGIS and found out that there should be an icon "get more" ...
2
votes
2answers
184 views

Get Index for a group QGIS Python

I am trying to add new layers into a specific group which I can get to work if I know the index but how can I get python to fid the index of a group so it can load the new layer into the group ...
1
vote
2answers
142 views

Migrating to the use of databases over shapefiles in QGIS

I mostly use ArcGIS at work and am digging into QGIS at home and for my business. At work we are phasing out the use of shapefiles and moving towards geodatabases. So I am thinking I should look into ...
2
votes
1answer
797 views

What angular units does the QGIS raster calculator use: Degrees, Radians, Gradians?

I am working with QGIs and am converting a slope raster with values in degrees to a slope raster with values in percent using the raster calculator and the following formula: ...
2
votes
2answers
241 views

It is possible to use different fields for symbology and legend labeling in QGIS?

[Edit : working with Quantum GIS version 2.0.1-Dufour] I wonder if it is possible to use some field to set the symbology and some other to label the map. [Edit 1 : I mean labeling the legend in the ...
6
votes
2answers
159 views

What does feature mean in QGIS?

I cant understand the meaning of feature in QGIS QgsFeature class. How it is related to layer and geometry? I have read qgis documentation but i cant understand what is feature.
2
votes
3answers
428 views

What is the projection of an Android Location class instance?

What is the projection of a Location object returned from the LocationClient by a class implementing the LocationListener interface with a fused provider in the Google Play Services SDK? For example, ...
2
votes
0answers
83 views

How easily can you pick up ArcGIS for Desktop if currently learning through QGIS on a Mac? [closed]

I'm currently trying to teach myself GIS and I have some really basic questions. I apologize if this has already been asked, but I have yet to find an answer to my question. So since I use a mac and ...
2
votes
1answer
2k views

Is it possible to create and run custom R scripts in QGIS 2.0?

I am new to QGIS and most of the tutorials I have found are for 1.x and the overhaul has me confused. I would like to create R scripts and run them in QGIS. I have read here that it's possible using ...
0
votes
0answers
28 views

How to divide my area into adjecent polygons containing 80 points each? [duplicate]

I have a couple of thousand points in my dataset. I need to create clusters that each consists of 80 points. The specific selection of which points to put into a cluster is not critical - only the ...
3
votes
1answer
240 views

How to make a different font and color of text in labels?

Is it possible to make a bold or italic, and change the color of individual words Label? Example: the first line is bold in red text, font 12, second row 10 green italic font
0
votes
0answers
18 views

Can't connect QGIS 2.0 to postgresql 9.3 remote server with postgis 2.1 [duplicate]

I am trying to connect qgis to my postgresql server using the add postgis layer option in qgis dufour. I am not getting any details from qgis other then 'connection failed check settings.' However, ...
0
votes
1answer
132 views

How to create NSIS installer QGIS with Microsoft Visual C++?

I want to know, there is a way to generate QGIS NSIS installer with a Release build generated with Microsoft Visual C++? It is possible to generate the installer in Windows Operating system?
0
votes
1answer
367 views

Merging Multiple Paths

Alright, I'm going to start by using Google Earth terminology because that's where the original need for a solution came up. I have multiple paths (54) that I want to merge into a single path. ...
0
votes
2answers
279 views

Qgis action adding layers using relative paths

in QGIS 2 windows I have some index layers I use for loading raster and vector tiles through an Python action. Currently I am using absolute paths which works fine but I would like to set it up so ...
1
vote
1answer
2k views

Any experience with OSX and Mac OSX Maverics using OSGeo? [closed]

There is a new Apple Release of OSX called Mavericks and my questions are: Will GDAL run? Will QGIS run? Will Tilemill run? Will Mapnik run? Also are there any known issues? A similar question ...
2
votes
1answer
198 views

What does the “Standard Distance” output from the spatial point pattern analysis in QGIS 2 represent?

I have a cluster of points and I am using the Spatial point pattern analysis tool from the processing toolbox in QGIS 2. I am having trouble understanding what the "Standard Distance" output is? It ...
2
votes
1answer
120 views

Problem converting coordinates

I'm trying to convert punctual values from lat/long to EPSG:6372, a projection for Mexico, defined by the Instituto Nacional de Estadística y Geografía (INEGI). I found a converter online but somehow ...
1
vote
2answers
417 views

qgis, simplify parcels to share borders

Is there a QGIS plugin or other method that simplifies parcels to share a common line(border)? I'm pretty sure I read about this some time ago. Couldn't find anything here or elsewhere. I'd like to ...
1
vote
1answer
925 views

Having trouble connecting QGIS with postgres database with postgis extension

I am working on Ubuntu Precise with postgresql version 9.3 and postgis 2.0. After initially starting my postgres database and eventually getting permission errors that would prevent postgres from ...
0
votes
1answer
76 views

Updating matplotlib using OSGeo4W - FOR BEGINNERS

This question has been asked, but I can't seem to find an answer suitable for a non-computer programmer. A link would be great, or a quick 'how-to'. I updated to Dufour (2.0.1) and have run into a ...
1
vote
1answer
419 views

Edit Sketch options for digitizing polygons

Trying my hand at building a methodology on QGIS as opposed to ESRI, and I'm having some issues with simple digitizing of irregular polygons. The edit sketch graphic that appears when adding a new ...
1
vote
0answers
26 views

Export Qgis settings [duplicate]

Is there a way to export my customized settings or copy some xml or config file, in order to install my settings to another computer without me manually changing everything? If this is possible it ...
3
votes
0answers
143 views

Creating water surface from vector line in QGIS

I want to create a raster surface representing the flood level in a creek based on output from a 1D hydraulic model. I receive a 3D profile of the water surface in a creek line as a 3D Polyline ...
3
votes
2answers
2k views

how to for loop a folder to batch clip rasters by polygon using python and QGIS

I am using python and QGIS 2.0. I am trying to clip rasters in a folder by one polygon feature. It's the first time for me using (let's say) "PyQGIS", I was used to arcpy before. Anyway, I don't get ...
0
votes
1answer
98 views

WFS Filtered : The filters that worked for me in 1.8 - gives no results in 2.0

Using Quantum GIS 1.8.0 and 2.0.1 desktop on windows XP 32bit Server: http://vmgeoserver.vd.dk/geoserver/VD/ows?version=1.1.0 Setting filter for VD:vma_admdata: "BESTYRER" = '230' AND ...
2
votes
1answer
51 views

Local Copy of Data for a project

We have an internal GIS library which has a very wide range of data from numerous sources. We use this to supplement information provided by a client. Our internal GIS files have coverage for the ...
1
vote
1answer
149 views

How Can I Merge Geocoded Addresses With a Shapefile and Export One Table?

I currently have two layers in my QGIS (v1.7.3 for Mac) project -- one being a Pennsylvania State House shapefile and the other being 166 geocoded addresses (for which I used 'Add Text Delimited ...
1
vote
1answer
112 views

fatal error LNK1104 qgis build

I try to build qgis1.8.0 using Microsoft Visual c++ 2010 in a Windows 7 64bit. all the dependency are installed and the solution qgis1.8.0.sln was generated succesfully. but my problem is the ...
0
votes
3answers
274 views

QGIS plugin requires a missing module: ui_gresp

I am developing my own plugin, the plugin manager shows the error: This plugin requires a missing module: ui_gresp If i try to enable it the trace shows: Couldn't load plugin gresp due an ...
0
votes
1answer
179 views

How to export a map (satellite image, 3 bands) to Tiff without losing the resolution in Qgis.

I manually improve the colour contrast of landsat images. The printing in pdf afterwards is OK, as it maintains the resolution due to the high dpi. Now I am interested to obtain a kmz/kml file of the ...
1
vote
1answer
1k views

Convert String to Integer in QGIS tables

I want it to know how to convert string field values to integer values in QGis Dufour... there are numbers and strings in the same field, when I use toreal(string) it stops and it won´t create the ...
1
vote
0answers
55 views

What do you think is happening to my QGIS Georeferencer

I'm pretty new with QGis, but have used tools as Openlayers and Geoserver for some years now without never being asked to diplay a georeferenced raster image. Which gets me to use QGis in order to ...
1
vote
0answers
29 views

Qgis on Ubuntu - change permitions? [closed]

First time using (QGIS on UBUNTU). i am following some articles in order to publish qgis maps on the web. My problem is (although i am the administrator) i am not able to save or copy my *.qgs in ...
3
votes
2answers
355 views

Need Projection Help to Buffer Lines in QGIS

I am somewhat new to GIS in general, and very new to QGIS specifically (I took one class and we used Arc, which I don't have access to any more). I need to create buffers (1km, 3km, and 5km) around ...
2
votes
2answers
347 views

Cropping and transforming geoPDF with GDALwarp

I got some great advice on how to transform a geoPDF to a geoTIF on this post, which used the available downloads from this site. I would like to take it a little further and not only convert, but ...
2
votes
1answer
446 views

.dxf export in QGIS 2.0.1 gives hatches instead of polylines

This may see like a stupid question, but I'm new to QGIS, so please bear with me. I'm having a problem when saving as .dxf. I export a building layer (polygons) as a .dxf file However in AutoCAD it ...
2
votes
2answers
217 views

how can i set place mark with text in QGIS?

I want to mark a point in map and place text near it. I used QgsVertexMarker to mark point .As far as now i am using tool-tip to show text. but i need clean code to show my text on map. Following ...
1
vote
1answer
73 views

Is it possible to paste features into QGIS from another application?

One of the coolest features in my QGIS workflow is the ability to copy features (select and copy) and then paste the results into, say, Excel or Openoffice - you get your attributes table plus a WKT ...
2
votes
2answers
184 views

How to create a SHP file in QGIS using the spreadsheet?

I have a spreadsheet which have columns (X, Y, Att1, Att2 ...). I want to create a point shp file, all column in the spreadsheet to be the column in shp file. How can I do this in QGIS? Thanks.
2
votes
2answers
104 views

How to set my own CRS in QGIS

I want to transform WGS to MRT (GCS for Malaysia) using QGIS. Is "save as" to a new CRS the correct method? With ArcGIS, I can create transformation method to do transformation but I'm not sure in ...
2
votes
1answer
122 views

Problems in gdalwarp

I was trying to use gdalwarp inside a qgis 2.0 model via processing but I think that the implementation is not working properly. So I would like to know if anyone has encountered this problem?
2
votes
1answer
2k views

QGIS, Installation on Linux Mint 15 Mate

I've just tried to install the latest version of QGIS on Linux Mint 15 Mate using 'sudo apt-get update' and 'sudo apt-get install qgis'. However, QGIS gives me the error message 'Couldn't load PyQGIS. ...
2
votes
1answer
76 views

DC-GIS WMS server. Metadata shows polygon layer, why am I getting a raster

This page gives the description of the layers available from the DC_GIS mapserver. When I look up the metadata for various layers, say record lots, the description says Geometry Type: ...
3
votes
0answers
175 views

QGIS Select Single Feature not correct in attribute table

For some reason, QGIS is not displaying the correct row of my data when I click on a feature with "Select Single Feature" or even the other select tools. I have a point database linked from mysql. ...
3
votes
0answers
242 views

How can I make use of the $scale function in QGIS data defined properties?

In QGIS 2.0 I can use with success the $scale function in the labeling expressions. When I tried to use it for symbolizing in the data defined properties it has a value of 0. Is there a way to make ...
1
vote
2answers
492 views

Add Oracle Spatial Vector Layer with QGIS 2.0 on Mac OSx

I installed version 2.0 using the recommended mac installer (http://www.kyngchaos.com/software/qgis), and the installation went fine, but there is no option to add an oracle spatial layer (not in the ...
1
vote
0answers
107 views

Is the postgis layer option in qgis 2.0.1 Dufour two way? Was the spit plugin built in?

I am trying to install postgresql with postgis on a remotely accessed terminal only installation of ubuntu 12.04 that I want to use to connect to qgis 2.0.1 and hopefully have a two way transfer ...
2
votes
3answers
2k views

Viewshed / Line of Sight analysis- as a batch process?

I wish to carry out a line of site analysis similar to the subject in here (preferably within QGIS): Visual Impact Assessment in QGIS or GRASS Scenario: I have two points, A and B. Point A is a ...