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

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MMQGIS: How to make grid layer in meters not degrees?

I've read several of the posts on here pertaining to MMQGIS Create Grid Layer option, but I have not found information on how to make the grid based on meters veres degrees. I know how to manipulate ...
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66 views

QGIS 1.8.0 Mac where is measure window or measure area symbol?

Just trying to measure the area of a selected polygon (a few km2) but can't find out where the measure symbol is (mentioned in some posts here) or how to get the measure window shown in the manual. ...
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996 views

“Easy Custom Labeling” arrows: How do I get them?

I have installed the Easy Custom Labeling plugin, but haven't figured out how to make the "Generate lines" function work. When I click on the tool in the toolbar, it opens the dialogue to specify my ...
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1answer
86 views

Syntax in Qgis "Rule properties?

I struggle with Qgis and some drawings of water pipes for a water company. According to the program it is possible to place different signatures for different components (stopcocks, T-pieces, etc.) ...
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1answer
393 views

Problem in libtiff.dll when starting QGIS

When I try to start QGIS 1.8.0 I get the error message "Can't find procedure start address TIFFMergerFieldInfo in libtiff.dll" and the program won't start. I have downloaded and reinstalled QGIS ...
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2answers
147 views

False easting/westing with MGI/Austria M28

After extracting the XY coordinates from geometry data via "save as csv" I get coordinates which are about 150 km more in the west than they should be. North/south seems right. I set the CRS to ...
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1answer
304 views

Rpy2 Unable to Load in Fresh QGIS Install

after installing qgis the a message given below is shown Unable to load the plugin: Unable to load required package rpy2. Please ensure that both R, and the corresponding version of Rpy2 are ...
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1answer
154 views

Modify 'Codepoint with Polygons' to add new fields

Sorry if this is a simple question - I'm just beginning in QGIS. I'm using OS Codepoint With Polygons data set which provides shape files of each Postcode area within the UK. Within each postcode ...
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1answer
169 views

How to run “create mask” from the console?

There's a plugin called "create mask" for qGIS and trying out some simple scripting from the Python console. I would like to call it after I select the vector features I want, then do more related ...
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94 views

How do you Select an existing vector Layer and Edit it, using python?

I'm developing a small plugin that needs to be able to select a vector layer programatically based on what layer the user has selected. However I'm not sure how to do so. I believe I found the two ...
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1answer
319 views

how to find share segments between two shapes (line) using QGIS?

I have two line shapefiles. I want to find between them, where are located all share segments and extract the new selection shapefile. Can anybody help me? I am using Quantum Gis. I know that in ...
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1answer
483 views

QGIS Sextante Python UnicodeEncodeError

I have some issues with Quantum Gis 1.8. When I try to use shapes to grid (sextante-saga tool) I get the following error (comes up when I try to define the new grid file name): Fehler bei der ...
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1answer
464 views

How to Georeference a tiff with correct coordinate system

I am having difficulty in georeferencing an existing tiff (already has georeference information - but is out of alignment). Using the georeference plug-in I can create the map's GCP in the 4 corners ...
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1answer
159 views

“ERROR: invalid input syntax for integer” importing data from Spatialite into PostGIS through DB Manager

I am trying to import data from Spatialite into PostGIS through drag and drop in DB Manager but all I received was an error: Feature write errors: Creation error for features from #1 to #202. ...
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2answers
166 views

QGIS Holux gpx file doesn´t show up

I´ve got a problem with displaying the imported gpx file. The gpx file is created in Holux Funtrek 130 PRo. The map I use is from Openstreetmap, I am sure it is the right map from the location I ...
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1answer
2k views

Illustrator to QGIS workflow for vectors

I vectorized a map in Illustrator and would like to import it to QGIS now. I know I must use DXF for that purpose but when I convert the DXF to SHP with the QGIS plugin it is not georeferenced which ...
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2answers
150 views

Why does my 113th Congress Shapefile match up with the wrong districts across the country?

I downloaded a Shapefile from the Census on the 113th congress broken down by district nationally: http://www2.census.gov/geo/tiger/TIGERrd13_st/nation/tl_rd13_us_cd113.zip Within the .dbf file, ...
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1answer
709 views

What are Bands, Dimensions, and Histograms in QGIS?

First; I can see a band as synonymous with a channel in an image editing program like GIMP, is this correct? If so then bands play the role of color mixing and masking. Are there any other ...
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2answers
478 views

QGIS rounds up the coordinates to six decimals when saving layer changes

I have the problem that when I create a new point (in a point layer) or a new line (in a line layer of course) and I save the changes to the layer (so NOT the project save) then QGIS rounds up the ...
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1answer
438 views

Find closest point from origin in QGIS and display measure line in composer

I have a location point. there are several constraints areas surrounding the point. Is there a way to calculate the closest point of this constraint from my point and to display the distances as a ...
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1answer
145 views

Problem loading raster to PostGIS using QGIS

I am having trouble loading a raster (.asc) file to PostGIS 2.0.1 using the plugin Database - PostGIS Raster - Load raster to postgis in QGIS 1.8.0 on Win Vista 64 bit. I get the following error ...
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1answer
268 views

Qgis - Raster clip Problem

I tried to use the Raster (Extration) tool "clipper" and I always get this error log: What is my problem? Fehler bei der Ausführung von Python-Code: Traceback (most recent call last): File ...
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1answer
365 views

Which horizontal unit is used on the table of the Profile Tool?

Does anyone knows what horizontal unit is used on the table of the "Profile Tool". Vertical is in meter but I don't know about the horizontal axis. Knowing the length of my profile, I tried to divide ...
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2answers
81 views

How to inspect consistency with two polygon which have to be the same position on QGIS1.8.0

There are two polygons which have the common line and point in some parts. These line and point should be the same position. I want to know how to inspect these condition on QGIS1.8.0. Thank you in ...
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1answer
394 views

How to set tolerance value of Geoprocessing tool in QGIS?

Is it possible to set tolerance value of geoprocessing tool on QGIS. History is below. There are two polygon which have to be the same position. so, I set topological rule "A must covered by B" on ...
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1answer
120 views

Sextante (SAGA) “Normalisation” problem

I don't understand the SAGA-module "NORMALISATION". In SAGA Gis I just can define one MIN and one MAX value. In QGis I have to define 2 of both. How to handle that exactly?
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1answer
190 views

Export GPS file in Lambert 93 for Illustrator manipulation

In Illustrator, i use some french IGN maps (1/50 000 scale) Lambert 93. I want to put on some GPX files to the right position for sure. I use QGIS to import the GPX file, i modify the reference to ...
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1answer
379 views

Projecting shp from GK3 to UTM32 with BeTa2007

I've experimented with projections of shapes, used the official provided grid beta2007 for germany and noticed differences between transforming by double exporting over custom CRS in QGIS and ...
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1answer
574 views

Desktop client symbolozing a WMS layer by sending SLD to the WMS server?

Objective is simple: finding 'desktop software' (such as ArcGIS, QGIS, etc) that can load a WMS layer, and then send its own SLD to apply to the WMS server in order to get the WMS layer back with the ...
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4answers
858 views

How to create internal polygon without overlap on QGIS1.8.0

I would like to create new polygon inside the existing polygon. It does not means donuts polygon. I would like to have two polygon without overlapping. I can create if I don't check "Avoid ...
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2answers
255 views

Put color for raster data(aspect.tif) on QGIS1.8.0

I create aspect.tif from DEM file. I could put the values(0 to 360)from contrast enhancement. I could set color from color map(freakout or Pseudocolor). In here, the data is shown by only 4 colors. I ...
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1answer
183 views

estimated population around a point qgis

I have a shapefile with points distributed in a polygon. The points are post office locations within a census district. How can I estimate if the post office is a representation of the concentration ...
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1answer
191 views

How to remove terracing from Civil3D GeoTIFF export?

I've received a GeoTIFF DEM that was exported from Civil3D and at every contour there is a distinct terrace created when I process an aspect or slope in QGIS with the GRASS plugins. I've looked ...
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1answer
102 views

I have a .sid image but can't figure out the CRS

There is a .map file: OziExplorer Map Data File Version 2.2 Tiritir_2.sid C:\OziExplorer\Maps\Islands\Tiritir_2.sid 1 ,Map Code, Geodetic Datum 1949,WGS 84, 0.0000, 0.0000,WGS 84 Reserved 1 ...
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1answer
512 views

Automatic bulk snapping with FOSS

I'm looking for a tool that would be able to automatically snap features closer than a given distance. Is there such a tool/plugin for QGIS/GRASS/OpenJump? Would it be possible to achieve that with ...
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1answer
471 views

Why do I get 'KeyError: 0' when using Line Intersection tool?

I'm using Quantum GIS version 1.8.0-Lisboa and trying to create intersection point using Intersection tool. (Vector -> Analysis tools -> Line Intersections ) But when I do that for my shapefile, It ...
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1answer
426 views

Polygonize function doesn't overlay the shape file over the raster file

To convert the raster into a shapefile I use raster->conversion->polygonize but QGIS doesn't open the new layer overlayed the first (the raster) but reflected above it. I read this question ...
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1answer
489 views

Displaying only points within a polygon I created in QGIS?

Thank you in advance for any advice you might give me. I am new to qgis and believe what I'm asking is probably fairly basic. I am trying to map policing activity in NYC for two areas: one area in the ...
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1answer
266 views

QGis compile with Qt Creator error

I followed the steps in this article http://linfiniti.com/2011/06/using-qtcreator-with-qgis/ to compile QGis on Ubuntu 12.04 64bit with Qt Creator. I got the latest source for master with git. I get ...
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1answer
688 views

How to fix the “Snap tolerance” error message in QGis?

I am trying to use the "Delete part" tool on a shapefile. While I am starting to use it, an error message shows up : "Could not snap segment. Have you set the tolerance in Settings > Project ...
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1answer
283 views

How to Add New Freehand Shapes and Data in QGIS?

I'm new to QGIS. Can anyone either direct me to a good tutorial or explain? I want to draw freehand new shape layers on to Google Earth to map vegetation types and embedded data for each feature. I am ...
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1answer
142 views

Error after installing QGIS 1.8

I have a problem with the installation of QGIS 1.8.0. After finishing the installation two icons show on the desktop: Qgis desktop and Qgis browser. When I click on these, it shows the same ...
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1answer
138 views

Python error when running SpatiaLite with OSGB(27700)

I have a project open in QGIS and am trying to import an Ordnance Survey Address Point layer into SpatiaLite. I have recently installed the Qspatialite plugin. I open SpatiaLite in the DB Manager ...
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2answers
1k views

How to Force the Showing of Labels of a Vector File in QGIS

I imported some OSM data. I then label the lines (roads) with their "name" field using the new label layering settings dialog box. When I zoom to different scale levels I find that while all the lines ...
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1answer
983 views

How to connect to MySQL from QGIS in Ubuntu10?

I have just installed Quantum GIS 1.8.0 on my Ubuntu 10. I want to add a MySql table as a data source but I can't see any options for connecting to mysql. Can any one guide me how to connect to ...
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1answer
571 views

Is QGIS 1.8 available for Ubuntu? [duplicate]

Possible Duplicate: How to install QGIS on Ubuntu 12.04? Title says it all, and if so, how do I go about getting it? I currently have 1.7 Wroclaw installed via the Ubuntu Software Center, ...
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1answer
545 views

QGIS crashes when adding vector layer from mysql or testing connection to mysql

For a while I have been adding layers from my mySql database and all went well. Then I got crashes when adding new vector layers. Then I only got crashes and it is not possible to add layers from ...
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97 views

VS 2008 qgis win libraries

I am building an app using qgis in Windows 7 with VS 2008. It was diagnosed that I must have the wrong versions of the libraries because of a potential name mangling problem. I have 12 unresolved ...
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176 views

Issues with OSM Plugin in QGIS on Ubuntu 12.04

(not sure how to wrap the subject into a question! But...) Here are some issues I've been having with the OSM plugin: 1) When I bring in the .OSM file, close QGIS, then reopen, I get a "Handle Bad ...
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93 views

Is it possible to get the style of a tab file I open in QGIS?

I'm trying to duplicate a map made in mapinfo pro with QGIS in order to create shp files for geoserver. When opening the tabs in QGIS they get some random style instead the one defined in mapinfo pro. ...