Version 2.0 of QGIS, is a user friendly Open Source Geographic Information System (GIS) desktop application licensed under the GNU General Public License.

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9 views

How hide vertices on polygons in QGIS

I am using QGIS 2 to make a map and one of the layers shows vertices along its outer delineations. I would like to hide these vertices and can't find how. Can you please help?
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17 views

Programmatically change layer position in the table of contents (QGIS)

I am trying move/position a layer to the bottom of the TOC by using addTopLevelItem on all other layers. I unsure how to reference the layers as QTreeWidgetItem's. def bg_bottom_level_item(self): ...
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5 views

Read an INSPIRE GML in QGIS2.0 : gml:xlink resolving

I'm trying to read an INSPIRE GML, which countains internal and external links between the elements. I saw on the GDAL site that we can set environnement value in order to load this link in QGIS ...
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1answer
35 views

QGIS 2.2: Rotated labels not possible any more?

Using Qgis Valmiera I would like to create feature labels on a layer that are rotated with a rectancular whitish background. Using "Labels (deprecated)" and entering an angle does the first part of ...
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1answer
10 views

How to calculate area in km2 Qgis 2.0 [duplicate]

I have a simple question. I have calculated the area of the polygons in my shapefile, but the number seems confusing for me. I need the area to be shown in km2 but instead I get numbers like:0.004008 ...
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28 views

export shapefile to spatialite hangs qgis

I have a shapefile layer containing 9 points. The attribute table has a string column (max 18 chars) and a real column. The .dbf file is ~4KB, all the other files are 1KB. I right-click on the layer, ...
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6 views

Gdalwarp script misbehaving in Qgis 2.0, size increasing

My code: mask = str(shpLayer.source()) output = "C:/Users/.../crop.tif" inputt = str(rasterLayer.source()) subprocess.call(["gdalwarp","-q","-cutline",mask,"-crop_to_cutline",inputt,output], shell = ...
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12 views

What units are the settings in the contour extraction tool of QGIS?

I am using a DEM to develop contours for a project area. I am using Raster>Extraction>Contour to develop the contours. One of the setting relates to the interval between contours. I selected 2 in ...
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1answer
17 views

Associate points with polygon QGIS 2.2

I want to associate a point layer with a polygon layer so that I can do zonal statistics. In the image below, the polygon layer represents roughly the metro area of a certain city. The point ...
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14 views

Multiparts and Multigeometries: checking for multigeometries with PyQGIS?

I have been working with PyQGIS and writing a small script to check whether the layers I have in the MapCanvas have geometries of type "MultiXX" because I want to run the "Multipart to Singleparts" ...
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0answers
12 views

How to cut a polygon without snapping to a vertex?

I am familiar with editing polygon files in QGIS version 1.8. I have recently upgraded to version 2.0 but there seems to be a difference in the way it processes cuts. I used to be able to cut a ...
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11 views

Error message while opening QGIS [duplicate]

When I open up my QGIS(2.0.1) this message always pops up. can any1 give suggestion as to what i can do to get away with it? also all the advance modules are not working probably because of same ...
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1answer
25 views

PGRouting Layer plugin error in QGIS 2.2

I am trying to do some basic computations using the PGRouting plugin for QGIS, but I am getting this error all time: An error has occured while executing Python code: Traceback (most recent call ...
2
votes
1answer
51 views

Decimal Degree data erases itself between edit sessions in QGIS

I have a shapefile with point data. I calculate the $x and $y of the points successfully I save the changes and close the edit session. Once I reopen the attribute table, the data after the decimal ...
1
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1answer
17 views

How to loop qgis:zonalstatistics using Python?

I'm looking for some Python + QGIS foo for the following: import processing for i in range (1,20): processing.runalg("qgis:zonalstatistics", "/folder/input/raster.tif",%i, ...
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1answer
28 views

Qgis 2.2 georeferencer always shows 0.00 dX, dY and residual. My fault or bug?

I'm georeferencing a map (jpeg) in UTM coordinates and everything works fine exept, i the referencer window doesn't give me any residuals or dX/dY values. When I change the coordinates of a point on ...
2
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1answer
38 views

Adding graticules to the edge of the map only in QGIS

I would like to add graticules to a map, once it is in the 'print composer', on the border of the map, and not on the frame (my map insists on being smaller than the frame). I have managed to add a ...
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29 views

How to add colour relief raster legend to QGIS print composer?

I created a colour relief GeoTif from a DEM with the Relief function of Raster Terrain Analysis in QGIS 2.2. Now I´m trying to creat a map of that in the print composer and of course I would like to ...
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31 views

Problem with QgsVectorFileWriter

I am trying to write a python script that when it is called it will take an .sqlite layer and save it as a GeoJSON layer. This will be used in a leaflet app but for now my problem is with this script. ...
2
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1answer
24 views

Upright/Horizontal lables when labeling polygons at perimeter?

I have several polygons (circles) I want to label with their ID number. The label should be outside the circles so I use the positioning options "Use perimeter" and the tickbox "Next to the line (or ...
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1answer
29 views

How to create a TAB with custom CRS using QGIS?

I meet problem about reproject in Qgis. I created coordinate user defined. i used version Qgis 2.2. I defined coordinate: Name: VN 2000 / 107.75 3degees Parameters: +proj=tmerc +lat_0=0 ...
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9 views

Qgis2.0.1 Zoom Problems

I'm working with project with EPSG:20790 in both basemap and SHP. i'm making a road in the middle of a farm between areas of vines, because of the precision that i want to have i'm working with some ...
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0answers
6 views

Can I limit the number of features in QGIS 2

I have a feature set that is city-wide and has 200,000 features. But I only need to see the features in the current map bounds. When I change the bounds in QGIS 2, it appears that it renders all the ...
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7 views

QGIS 2.2.0 Update column with another layer [duplicate]

I've got 2 layers : the first one with points, the second one with polygones (their ID). I created a new column in the first layer, and I want to update it with the ID of the polygone that contains ...
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2answers
52 views

QGIS 2.2.0 Bug in the composer

I am working on several QGIS projects, created with Qgis 2.2.0 (and, by the way, the changes from the latest version are awesome!!), and , each time, the composer stops working correctly after a ...
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2answers
133 views

How to set Eclipse and PyDev for QGIS when ArcGIS is installed?

I have got a lot problems with the configuration of Eclipse with PyDev in order to develop QGIS plugins. The situation is very weird and frustrating. I can import qgis module using Pyscripter without ...
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1answer
62 views

How to update a QGIS plugin for new version (2.2)?

The updates to QGIS 2.2 have been fantastic and I'm really liking the improvements to the interface, features and performance. However, it seems that some plugins have not survived the upgrade. ...
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1answer
27 views

WMS Service is not displayed

I try to display a wms-server in qgis. It serves several coordinate systems, but only few are working. Here is the link: http://www.webatlasde.de/arcgis/services/Maps4BW/MapServer/WMSServer For ...
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0answers
15 views

In QGIS2.2.0 raster layers (.asc) with very low values get rounded of

In QGIS2.2.0-Valmiera I import raster layers in asc-format. The values in these files are very low. If I render them to single band pseudo color all values below 0.000001 are rounded off to zero. I ...
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1answer
57 views

Qgis Spatial Join: problem with a column!

I run the function "Join attributes by location" in Qgis 2.2 between a point vector layer and a polygon vector layer. When I open the resulting table of contents of point layer there is a column of ...
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11 views

Visualization of poin.shp in QGIS 2.0 with manually selected min max values

I would like to visualize a poin.shp file in QGIS 2.0 with manually selected min max boundaries. The data consists of many different points lined up as a line. The aim is to visualize the different ...
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40 views

Adding additional Grass modules to QGIS Processing toolbox

I am very happily using the Processing toolbox (nee Sextante) within QGIS 2.3 but there are a number of Grass modules I use missing which I'l like to add. I followed the guide at: ...
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1answer
31 views

How to add randomly distributed points within boundaries of zip codes?

I’m creating a map to show the distribution of students in my school’s department. I have a .shp file from the US Census displaying zip code areas in the vector layer. Now I have an Excel spreadsheet ...
1
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1answer
43 views

problem georeferencing a TIFF QGIS

I'm trying to georeference a TIFF in QGIS2.0, 32Bit. The problem appears when QGis adds the map in my project, the map transforms into a black square and it goes to the wrong place. In the next image ...
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1answer
34 views

Unable to show tiff “parameters”

Why this raster (tiff) does not have any values? Why I am unable to perform: doubleclick -> onechannel pseudocolor -> clafify Both rasters are downloaded from the same site: ...
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0answers
23 views

QGIS 2.2 crashes with custom SVG fill

This may be a bug, but I am not sure how or if I should submit it. I wasn't able to find much with a Google search. I developed a custom SVG fill and implemented it. When I go to change the style ...
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0answers
51 views

How to activate edit tools

I have opened a project I worked on earlier on another machine, but the edit tools are not active, so i cant turn on editing to change a layer. What is the reason for them to be gray, and how can i ...
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1answer
39 views

Labeling expression to label one value in a attribute table column

I am using QGIS 2.0 on Windows. I have a shapefile for a point layer that has the the following attribute table: I am trying to label using the Status column and only want the value that equals ...
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0answers
23 views

The graduated symbology doesn 't take into account the attribute I need in QGIS

I m working on a project on QGIS I have a point shapefile vector that represents my store In the attribute table, i have bunch of data such as size, unit per transaction and most importantly store ...
1
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1answer
56 views

How do I add coordinates to a polygon layer to be able to sort the polygons from north to south in QGIS?

I have a polygon file, where each polygon represents one property. I want to be able to sort the polygons from north to south or vice versa. I need them to be sorted in this way when I export them to ...
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2answers
56 views

QGIS 2.0 Automatic generation of a vector layer out of a point layer

I am an environmental engineer and the aim of my QGIS 2.0 project is to visualize the results of a sewage water system inspection. In a first step I included the hoppers from a csv file and added a ...
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0answers
36 views

QGIS Plugin to open metadata and show metadata information

I try make plugin to open and read metadata (.xml) and show information inside metadata like map scale, map fiture and bounding box and auto fill it to QLineEdit This code i use to open metadata ...
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0answers
22 views

Display errors with QGIS Python Console

I'm using qgis 2.0.1 and I'm just starting to try to use the python console. From what I can tell the functionality of the console is fine (I'm not getting any unexpected errors) but when I'm typing ...
2
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2answers
79 views

Key for a Heat Map

I have a question about heat maps and the correct way to describe the results. I have a dataset of small historic territorial units which vary greatly in size in different parts of a country. I want ...
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0answers
21 views

Comparing TIGER 2013 with TIGER 2006

I'm doing a project when I want to compare TIGER 2013 data with the TIGER 2006 data. Essentially, the Census updated the data between 2002-2008, and a number of the counties were updated in the 2006 ...
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1answer
39 views

How do I label my map with attributes?

help is always appreciated. I have a state map in QGIS 2.0 with all of the county names and some other info listed in the attributes table. I would like to have the name of the counties and one of ...
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1answer
162 views

Add file GDB in quantumGIS 2.2

In QGIS 2.2.0, while adding vector layer, 'ESRI FileGDB' option was missing under Source-Type, refer the attached screenshot.In this case, how can I attach a file GDB in QGIS 2.2.0?
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1answer
48 views

QGIS 2.0 - can't select items in Print Composer

I am having an issue where I can create a print Layout in Print Composer, but once I have clicked away from an item (like map, legend, arrow, etc) I cannot select it again. Any pointers would be ...
0
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1answer
34 views

Invalid geometry message when using Difference tool

I am using the Vector \ Geoprocessing \ Difference tool to get the resulting area when taking a) current ground disturbance away from b) historic total ground disturbance to give c) what has been ...
11
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2answers
635 views

Does QGIS have the equivalent of ArcGIS's Layer (*.LYR) file?

Using ArcMap, it is possible to add a dataset (eg a shapefile) to the map, and configure the layer's properties (such as the symbology, table joins, switching some attributes off in the Identify ...