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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0answers
357 views

Can hdf4 images be used in QGIS?

I'm trying to use hdf4 raster image in QGis 1.8. This image come from the MODIS satellite. I've loaded the file, it appears on the layer window bu it is impossible to see it on the display window. ...
2
votes
0answers
573 views

Is it acceptable to store OSGB36 data as geometry in SQL Server?

I've set myself a project of getting some geo data into SQL Server but before I get started doing any of the big jobs I wanted to see if I was on the right track. All of my data is for the UK and is ...
2
votes
0answers
376 views

Setup of development environment of QGIS on windows with qt creator

Can anyone help me in setting up environment for working on QGIS on windows using qt-creator? I am using qt creator version 1.3.1,qt version 4.6 and QGIS version 1.8. Thanks.
2
votes
0answers
366 views

How to create polygon “stamps” and extend lines by fixed distance? in QGIS

This is related to Does QGIS have these CAD editing functions? Cadtools have solved a lot of the issues I had but I need the ability to see how long a line is while I am drawing an orthoganal ...
2
votes
0answers
60 views

How to create a link on a marked item?

I'm working with ArcGIS 10.x and QGIS 1.74 on a Windows XP SP3 System. In ArcGIS I get XML-Data which can be converted to a file-gdb using "IP NAS-Manager". Included in the XML-files there a owner ...
2
votes
0answers
607 views

cant find point/polygon intersect using qgis (windows only)

below i describe the method i am using. i have 2 machines: 1 ubuntu linux, qgis 1.4 - intersection works 2 WIN xp, qgis 1.8 - intersection dows not work hopefully, someone will ...
2
votes
1answer
419 views

How to use ECWP protocol with QGIS?

Is there a way to retrieve remote data through ECWP protocol in QGIS? I've read that .ecw files can be opened with QGIS, but haven't found anything concerning this particular protocol and QGIS.
2
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0answers
755 views

How to change feature's geometry?

Hy, I'm creating my layer like this: crs = core.QgsCoordinateReferenceSystem(4326, core.QgsCoordinateReferenceSystem.EpsgCrsId) uri = "Polygon" uri += '?crs=' + crs.authid() uri += ...
2
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0answers
520 views

Mean coordinates in QGIS

I am using QGIS v 1.7.4 for MAC and I am trying to calculate mean coordinates for a set of points using ftools. To calculate my result I am going to Vector -> Analysis tools -> mean ...
2
votes
0answers
69 views

System Requirements for Quantum GIS [duplicate]

Possible Duplicate: Looking for system specifications for a modern GIS workstation I have been using the program to make maps to include in my reports over the past year or so. It is ...
2
votes
0answers
117 views

How to send data from my application to QGIS?

I have an application that makes analysis on maps . After making analysis I have new map in my application. My application doesnt use QGis API. How can I send results back? Should I construct ...
2
votes
0answers
177 views

Polygonize problem [duplicate]

Possible Duplicate: Polygonize function doesn’t overlay the shape file over the raster file When using "Polygonize" in Quantum GIS, I'm getting a polygon shapefile output that is a mirror ...
2
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0answers
246 views

How can I apply “natural breaks” classification to a raster symbology in QGIS?

Anyone knows how can I apply "natural breaks" to a raster symbology in QGIS? Cause I only see the "Equal interval" option.. I'm using QGIS 1.9
2
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0answers
198 views

QGIS: WMS misalignment

I am experiencing a small screen space offset when using a WMS layer (origin is GeoServer 2.1.4): The image shows a red square which is the top left pixel of a tile (GeoTIFF). An exact copy of the ...
2
votes
0answers
1k views

Qgis 1.8 fails to install

QGIS 1.8 will not start on Windows 7 Basically a similar issue as the above post. Version 1.8 fails to install with the standalone installer; with OSGeo4w, while it doesn't run into trouble during ...
2
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0answers
142 views

Does QGIS preserve Feature Class Relationships (1to1 or 1to many or Many to many relationships)?

Does QGIS preserve Feature Class Relationships (1to1 or 1to many or Many to many relationships) and can the related attributes be clicked and viewed through the identify feature tool?
2
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0answers
242 views

QGIS system architecture [closed]

I'd like to develop a simple spatial system with database for plotting and managing geographic features.I thought I should install on an ubuntu server: qgis server postgreSQL postGIS and write ...
2
votes
0answers
138 views

Instalación masiva de QGIS - Automated installation of QGIS

Solicito lo siguiente requiere la línea de comandos que permitan realizar la instalación automatizada o desatendida para poder enviarla desde SCCM para la Instalación de QGIS Google Translate - ...
2
votes
0answers
142 views

OpenLayers Issue: plugin crash during opening [closed]

I've encountered problems while loading the OpenLayers plugin in Quantum GIS 1.7.4. My hardware: Windows 7 Home basic 64 Bits My Python crash window: Traceback (most recent call last): File ...
2
votes
0answers
211 views

Problem with geotiff in qgis only in some PCs

Helllo I'm having some weird problem opening a 16bits geotiff with qgis. In my pc it opens and displays perfectly, but in another pc (with the same version of qgis) it displays all wrong the image ...
2
votes
0answers
105 views

When using OpenLayers plugins maps, can I have Longitude/Lattitude labelled on my grid when using the Map composer in QGIS?

Using OpenLayers plugins maps, can I have Longitude/Latitude labelled on my grid when using the Map composer in QGIS?
2
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0answers
129 views

Changing CRS crashes QGIS every time

When I open QGIS, and use the tools, setting -> project properties, QGIS will crash. When I also use the setting -> option -> CRS , Select new CRS also causes a crash. It looks like couldn't use the ...
2
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0answers
1k views

OSGB36 to WGS84 reprojection 'error'

First off, I am a recent convert to QGIS and am greatly impressed with its ease of use and speed compared with the ESRI products with which I am more familiar - my congratulations and thanks to its ...
2
votes
0answers
78 views

Is there a way to link eVis with time manager in QGIS

I have a point vector layer created from way points of a GPS. I then used the eVis plugin to view geotagged photos for each of these point. I also used the time manager plugin to play through the ...
2
votes
0answers
90 views

Does qgis-server support join?

I'm having troubles getting joins work with qgis-server. I'm not sure if it's a qgis-server problem or a qgis-web-client problem (bug report). Anyone has a working project using joins?
2
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0answers
160 views

Are there Plugin Compatibility Issues between QGIS 1.6.0 and 1.7.4?

I've been working on a QGIS plugin on Quantum GIS 1.6.0 Copiapo with Python 2.5 that calculates additional values for eachf feature of a vector layer and adds them to the .dbf. We've just upgraded to ...
2
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0answers
568 views

Trouble with Python plugins on QGIS [closed]

This question has been bugging me for a while now, and I still haven't managed to solve it, so I'm giving it another go, hopefully someone may help me out. I've been having problems loading several ...
2
votes
0answers
250 views

GIS “hack”: ways arbitarily assigning coordinate in order to match the raster and vector layer in QGIS

Before I raise my question, I have to admit that I am a total newer on GIS, I don't have much background on GIS. But suddenly I need to take over the GIS job from a GIS specialist who just left the ...
2
votes
1answer
279 views

How to modify area polygon in postgres? [duplicate]

Possible Duplicate: Automated correction of parcel geometry based on area measure I need a function to modify area polygon in postgres the major probleme is automated correction of parcel ...
2
votes
0answers
254 views

RT Sql Layer plugin giving an error [closed]

I am trying to use the aforementioned plugin with QGIS 1.7 and Postgres 9.0/PostGIS 1.5. Added a PostGIS spatial layer w/out a problem and then clicked on the RT Sql layer button which displayed the ...
2
votes
0answers
478 views

How to read a .GPB file in C#?

I have a .GPB file, I need to extract the common GPS data from it but I don't find a clear structure that specify the contents of that file. as a sample record from file 00000260 02 11 A9 61 E7 96 ...
2
votes
1answer
41 views

How to place labels at the boundary of the current map extent

I have a layer of reference grid lines on top of several map layers. The grid lines should be labeled with coordinate values: vertical grid lines with x-values and horizontal lines with y-values. The ...
2
votes
1answer
117 views

Is it possible to destroy a spatial index?

QGIS 1.9 Is it possible to destroy a spatial index? I am noticing that if I generate a spatial index on a set of polylines (within a plugin), split one of the lines, and then recreate the spatial ...
2
votes
1answer
157 views

How to save after using fet.setFeatureId in pyQGIS?

By using the following code, I want to change the id of the line when saving the line. But the setFeatureId command, gives a false when doing the commitChanges(). Any idea how to change the id? vl = ...
2
votes
4answers
77 views

How to create different size of bubbles with different colors? [duplicate]

I have a set of points with fields like 'TYPE','SIZE','SALES VOLUME',what i would like to do in QGIS is: Apply different color code by 'TYPE', Apply graduated size of bubble circles based on 'SIZE' ...
2
votes
2answers
501 views

Error when setting projection of a tif file in QGIS. Any ideas to solve this? [closed]

I get this error when trying to define a projection for a tif file in QGIS: ERROR 1: Too many points (3249 out of 3249) failed to transform, unable to compute output bounds. How do i work this out? ...
1
vote
1answer
6k views

Opening TIFF DEMs in QGIS

I have files, in Tiff format, downloaded from ASTER-GDEM. Can I open this file with QGIS? If yes, how? Thanks in advance
1
vote
2answers
2k views

How to save project with data source path as relative in QGIS?

Is their an option in QGIS to save the project with the data source being relative path. I Dont see the option here.QGIS Wroclaw1.7.3
1
vote
4answers
580 views

Needed shape file for Australia and New zealand

I was trying to find a shape file which has Australia and New zealand together(states) so that i could convert to jvectormap for ANZ. where i can find it?
1
vote
3answers
1k views

How to install Fiona to read Shapefile attributes with OSGeo4W?

I´m developing a plugin in Python and I need to read the shapefile attributes, so I found the Fiona API and dbfpy also but I don't understand how to install these packages because I install the QGIS ...
1
vote
1answer
311 views

When is Qgis 1.9 being released

I've been working in the alpha of 1.9 for quite a while (because of doing bug reports) and I like it a lot. It's more than a year since 1.8 was released, so I wonder when 1.9 is expected out.
1
vote
4answers
6k views

Get pixel value from a raster in a xy table

I'm trying to find a way to convert a raster (in my case it's a Landsat satellite image) into a table with 3 columns which would represent: 1) x coordinates (the so called "xllcorners" in ASCII ...
1
vote
2answers
172 views

Is there a way to “zoom to feature” in QGIS?

I am the GIS Director of a city public works. I have a shapefile that I created of points on each structure and address in the city. We have been working in ArcMap Desktop for 6 or 7 years and depend ...
1
vote
3answers
318 views

Differences between SQL dialects in QGIS vs ArcView vs Oracle

I'm kinda new with SQL queries and there is something I don't get: A SQL query in QGIS is written differently than the same query in ArcView and will probably also be written differently if I want to ...
1
vote
2answers
85 views

How to get a layer that is not active with PyQGIS

I want to retrieve attributes of selected objects on a layer with PyQGIS. All example I see is for the active layer: vlayer=qgis.utils.iface.activeLayer() selected_bf = vlayer.selectedFeatures() ...
1
vote
1answer
178 views

How can I use Openflights database in QGIS?

I would like to have a shape file with the airports position and the routes of the planes I've found Openfilghts but I can't use it in QGIS. Seems that the format of the DB .dat is not supported by ...
1
vote
2answers
103 views

How can I do more flexible matching in conditional expressions than provided by LIKE?

With LIKE '%' works but I have had no luck with character ranges, i.e. [0-9] to match a digit. Oh for a regular expression ;)
1
vote
2answers
2k views

How to export attribute table to Excel from QGIS?

I have seen all the questions for this question, and I try all the answer like copy paste, csv (in fact this I don't know where to find) but none of all is not the right answer. Can anyone help me?
1
vote
3answers
212 views

What is the math behind rasterization?

I'm taking the first steps in QGIS (version 2.2 Valmiera) and I am having some difficulties in knowing what mathematical criterion that QGIS uses when converting polygons (shapefile) to raster. I'm ...
1
vote
2answers
373 views

How does one export the list of stored WMS-servers in QGis?

Could anyone point me as to where QGis stores the list of WMS-servers you added? I have built a fairly large list of WMS-server on one computer, but the QGis-project file which gets accessed by my ...