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

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Any clue how to read a .style (ArcGIS) file in Python, for converting into another platform-specific format? [duplicate]

The problem I am face with is that I have all my data as shapefiles but my organization works with only 1 ArcGIS license. Migrating to QGIS to prominent amount of work, I need to convert my ArcGIS ...
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0answers
32 views

Scale keeps changing in QGIS composer?

Every time I pan the map content in the QGIS composer window the scale changes. Is there a way to make it stick at specific scale?
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2answers
28 views

qgis raster style 'no data value' checkbox is ignored - what's a good workaround?

See bug report filed here: http://hub.qgis.org/issues/10236 Note the initial bug report got 'fixed' but that fix introduced this new error, so the issue was reopened a few days ago. Anyway, it ...
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1answer
27 views

How to remove ghost layer in Qgis?

I added a delimited text layer to a Qgis 2.0 project, working in Windows, but it got added wrong: It didn't appear in the list of layers on the left panel, nor did it show in the map canvas. However, ...
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0answers
57 views

How to keep all the unique columns of the shapefiles after merge?

Writing a script where the user is asked to select a directory which contains Folder_1 and Folder_2, both containing shapefiles and run various algorithms. The basic logical process of the script is: ...
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2answers
68 views

Retrieve Elevation from Color in Raster DEM

This might turn out to be a newbie question, and that would be because I'm fairly new to GIS work, but extensive online searching, asking associates with some basic GIS knowledge and hours in various ...
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1answer
37 views

Best Resampling Method for DEM reprojection in QGis

I need to reproject a DEM (aster file) in order to have the same CRS as all my other project data - I have different SHP for the same DEM's location but they have a different CRS. Which resampling ...
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2answers
40 views

Coordinate Reference System issues between SHP and Raster file

I am having an issue with the CRS of a given Aster DEM. I have downloaded a Aster DEM from www.oziexplorer3.com which comes with the EPSG:4326 - WGS 84 as the CRS. This is a DEM from Gabon, and all ...
3
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1answer
66 views

How do I select all outermost features

Is there anyway in QGIS that I can select all the outermost features on a map? On an island that would be all that have a coastline. edit: This is what I'm trying to select:
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0answers
19 views

How to build an optimization model? [duplicate]

I want to make a model using QGIS. Is it possible? Then how can I develop a model. can anyone help me?
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0answers
17 views

qgis: module crashed or killed

using Grass 6.4.3. via Qgis 2.2.0 Valmiera (standard installation package): Why would Grass modules suddenly produce a "module cashed or killed" error. specifically in relation to r.surf.idw2 and ...
1
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1answer
48 views

How to create atlas along line/route in QGIS

I'd like to create a mapbook along a given route that is designated by a single linear feature. Is it possible to have QGIS (2.2) automaptically compose a series of pdfs that over lap by a given ...
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0answers
35 views

QGIS - Obtain elevation profile [duplicate]

I wish to obtain a bathymetry profile along the selected path (Google Earth calls this feature "elevation profile". Can QGIS 2.2 provide this? I created a layer using the WMS service to load the ...
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1answer
30 views

QGIS - View bathymetry info in the status bar

PolyGo suggested that I split my earlier twofold question into separate questions. So: I am new to QGIS or any GIS software so please forgive me if the answer is obvious to you. I wish to view the ...
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1answer
59 views

Modifying Fields in QGIS

I'm pretty new to Quantum GIS, and I was looking to add zeros to a field I was having some trouble with. I learned through browsing a few posts here that existing fields can be modified by defining ...
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0answers
27 views

Enlarge region/features in shape file

I'm completely new to QGIS. I have a shape file over the counties in Denmark (see here for what the shape file looks like). The counties around Copenhagen are rather small and I'd like to add an ...
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1answer
43 views

Unable to install QGIS 2.2 successfully?

I'm having problem in installing QGIS 2.2. (64 Bit). After downloading & installing, when I click the OSGeo4WShell, I get a message: C:\***.exe not a valid win32 application and ends with: ...
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0answers
25 views

Save map canvas as image with drawings

Is there any way to save the map canvas as an image, with the drawings on map? I draw a line on map, and saved it as image, but only the map saved(without line). I used the following code.. ...
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0answers
17 views

Created polygon appears to move when zooming in (qgis)? [duplicate]

I am using QGIS 2.20 on a Windows 8.1 64-bit laptop. I have a shapefile that includes a polygon that I created from digitizing a Google Satellite image from OpenLayers Plugin. Here is my problem: ...
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3answers
81 views

How to measure areas using an official CRS which is not available in QGIS?

I am very new to QGIS and doing a project on Glacial Lake Outburst & Flooding (GLOF). I am trying to find the area of a lake using images from Google Earth 7.0.3.8542. I am using the WGS84 CRS ...
0
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1answer
53 views

Where is the Merge selected features button in QGIS 2.2?

Ever since I updated to QGIS 2.2 I've been a bit lost with the new menu layout (I was running on Wroclaw until then). I can't seem to find the "Merge selected features" button. I need to merge ...
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0answers
35 views

Is there any way to get qgis to show a key/legend for categorized colorization (heatmap) scales?

I have a shapefile of all of the counties for a state that is being displayed in qgis as a heatmap, colorized on a 12-point scale from red to green. The data producing the colorization is income or ...
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0answers
30 views

QGIS Bathymetry Display, Bathymetry along a path [duplicate]

This post has two related questions. I am new to QGIS or any GIS software so please forgive me if the answer is obvious. I wish to view the Bathymetry point for any given coordinates (e.g. as I move ...
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3answers
85 views

Can QGIS merge CSV files with different colums? [closed]

I am trying to merge a month's worth of daily CSV files without using ArcGIS. Each file has ~25,000 entries so this is a high data load project. Sample data can be found here. Note that we are using ...
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0answers
7 views

QGIS merge selected features tool malfunctions due to geometrical errors

The issue occurs using the 'Merge Selected Features' tool when there are geometrical errors in the features (not all are picked up by the 'check geometrical validity' tool). In 2.2 Valmeria, the ...
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0answers
17 views

Reclassify based in neighbour polygons

I would like to do a simple operation in QGIS and I am not sure about which is the best option. I have a polygon shapefile and each one has one class attached. I want to reclassify one of them based ...
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0answers
22 views

Import CSV limited to 20 records [duplicate]

I want to import data that I have on a csv file into QGis. Its basic data; point name, latitude, longitude. I have around 1200 records on the csv file. Surprisingly, when I import the data into QGis ...
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1answer
32 views

Problem when converting Shape file to KML files in QGIS

Problem when creating KML files in QGIS? I select Layer CRS as WGS 84 (EPSG:4326) When I open the kml layer in Google earth it is wrong. In Google earth, appears some segments every where on the ...
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0answers
36 views

Couldn't load PyQGIS in QGIS 2.2 on Ubuntu 14.04 [duplicate]

This issue appears to be occurring with some frequency to folks in some shape or form. I upgraded from ubuntu 12.04 to 14.04, with loss of python functionality. My QGIS version is 2.2 from the ...
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1answer
33 views

QGIS API documentation in French?

I am looking for a document which explains what the API of QGIS is, with examples of this API but in French.
2
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2answers
78 views

How to get the Measure Line in Yards (not Feet)

I'm using Qgis Dufour 2.0.1 and the Openlayers Plugin for images. I'm working on a golf course project where everyone thinks in yards. I've tried different CRS (now working the State Plane Missouri ...
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0answers
61 views

Problems installing libgdal-ecw package

I have problems to visualize ecw files for qgis 2.3.0 using ubuntu 12.04 LTS. From terminal, following the instructions for qgis 1.8 found at ECW for QGIS 1.8 in Ubuntu 12.04, because launching the ...
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17 views

QGIS Small multiples / animate across columns

I want to turn each column of a shapefile into choropleth. I have over 100 columns, so rather than manually classifying each column and exporting an image, I was wondering if there is a way to ...
4
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3answers
110 views

How to compute the outline of multiple tracks?

I have multiple gps tracks with depth data gathered from the lake. The tracks are overlapping/intersecting. I want to get an outline polygon. I have a multi-line shp. I've tried to diffuse it in qgis ...
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0answers
23 views

GeoTIFF Mosaic/Crop/Translate: Easiest Method in QGIS?

I routinely have to mosaic multiple GeoTIFFs together, extract a rectangular area, and save that area as a JPG with a world file. Typically I've been using commercial software for that (Geographic ...
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1answer
33 views

Resolve polygon parent relationship in QGIS

I have a layer in which, following geometry processing, the polygon of a zone that is a full enclave to another seems to have become its child object, which I think will cause problems down the line. ...
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2answers
55 views

Any difference between EPSG:3003 and EPSG:102091?

I am working on QGIS 2.2.0. The PRS I am working on is Monte Mario / Italy zone 1 (EPSG:3003), with the following parameters: PROJCS["Monte Mario / Italy zone 1", GEOGCS["Monte Mario", ...
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0answers
16 views

How specify QGIS scale settings according to project?

I have a layer in QGIS named rivers. I want to view this layer between 1/5000 and 1/400.000 scale. But when I open QGIS, I see the default scale is 1:-2.147.483.648 I setted the project scales from ...
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1answer
43 views

How to get QGIS layers style in a single file

I have layers on my QGIS project. Rivers Water pipes Gas pipes ..... I set the color, width, size of these layers. All layers are different style. I want to use these styles in geoserver. I have ...
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2answers
40 views

Is there a way to run spatial join within tolerance?

I have some data that should be spatially joined, but from small precision differences (less than 1 in) they aren't joined. I've found no way to add tolerance to qgis spatial join operation. Is there ...
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0answers
49 views

Is it possible to get WMS feature info for the WMS layer in the QGIS web client?

When I load a wms layer in qgis, it's possible to get feature information. When I open the web-gis-client on my server, it's possible to get feature information for all layers but not the wms layer. ...
0
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1answer
21 views

QGIS GRASS vector simplification creates duplicate data rows

When simplifying polygons in QGIS (2.2.0) with the GRASS v.generalize tool the resulting layer duplicates some data rows many times. A shapefile of 657 zones/data rows: .. is simplified to one ...
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0answers
21 views

Is it possible to customize openFeatureForm of pyqgis?

I am a beginner in PyQgis. I am trying create a plugin, which will be used to AddFeatue,Delete Feature, and Edit the Feature. It is more customized than which is provided by Qgis (2.2). I am capturing ...
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0answers
19 views

Expression based labeling: Look for points in defined radius/buffer

How can I do that with qgis expression based labeling: CASE WHEN within a radius/buffer of 1km (outgoing from every point with attribute 'place') is a point with attribute 'museum', THEN 'M' ELSE ...
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2answers
54 views

How to get features based on their attributes using Python - special characters?

I want to get features based on their attributes and it works fine when I use this Python script: canvas = iface.mapCanvas() curLayer = canvas.currentLayer() it = ...
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2answers
47 views

How to show attribute table in the form

Is there any way to show the attribute table of a layer in a QtextBrowser or a QtableView on form? I did this but,(shows attribute table in a separate dialog) I have no idea, how to show it in my ...
2
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1answer
63 views

How to find the id of the last added feature using pyQGIS?

Is it possible to programmatically (in python) access the attribute info of the last added feature in QGIS 2.0 before edits are saved? I'm failing to find a way to get the ID and subsequently other ...
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0answers
33 views

Openstreet map loosing information

I succesfully created a shapefile from openstreetmap with the OpenStreetMap tool in QGIS 2.2. When I try to create a polyline layer, it says that there are 8000 values in the db file for the property ...
1
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1answer
28 views

draw extend of print composer map as rectangle in canvas

After defining the extend of my printed map in the printcomposer I can show the map center in the canvas by hitting "view extend in map canvas". So far so good. But is it also possible to show the ...
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0answers
14 views

Create indicator for inclusion/exclusion from polygon based on coordinates, and reverse

I've got a database with 570,000 or so addresses, and what is purported to be their associated Lon/Lat coordinates. However, when I compare a simple scatter plot of these to the shape of a polygon ...