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

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52 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.
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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
60 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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0answers
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
votes
3answers
109 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 ...
1
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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
42 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
39 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. ...
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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
20 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
53 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
46 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
votes
1answer
61 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 ...
0
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1answer
24 views

Enhance the color associated with a band od an aerial photo?

I am using QGIS 2 on Windows 7 and have 4-band aerial photos loaded in to a project. I have switched the bands in order to make the photos display as color infrared. Does anyone know if you can ...
7
votes
1answer
288 views

Is the use of Google Earth imagery via the OpenLayers Plugin in QGIS legal?

I understand the terms and conditions WRT use of Google Earth imagery in external applications are strict. Years ago ArcBruTile offered such service in ArcGIS the legallity of which was ...
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0answers
32 views

Copy queried attributes of a shapefile to a new shapefile [duplicate]

I have a polyline-shapefile, which I have successfully read into python using pyshp module. My problem is to save the 2nd node of every line feature into a separate, single point file. I have ...
1
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1answer
41 views

How to generate routes that follow underlying road network?

I have a set of points (~2300 bus stops) and I have a network of roads that these bus stops lie on. When I have a bus route that goes from A to B, how do I generate the route such that it follows the ...
1
vote
1answer
23 views

Project one layer in qgis using projection CRS of another layer

I am using QGIS 1.6 and have imported a set of latitude, longitude points from a csv file as a layer. I also have another layer from a shape file. When I go to layer->properties for the second layer I ...
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0answers
12 views

QGIS custom action and button toggle

I've added a custom toolbar with some buttons to my QGIS 2 plugin. I'm wondering how to get the button toggled (pushed in-looking effect) using Python. I've gotten this to work for existing buttons ...
1
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1answer
26 views

Both dashed line and stroke line in parallel in the SLD

I just started in GIS. how can i draw in the GeoServer's SLD editor, both dashed and stroke line in parallel? like this, ----------------------------------- ___________________________________ ...
0
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1answer
29 views

PostGIS Group By Error [closed]

I am performing a pretty simple query in PostGIS 2.1.1 from within QGIS 2.2 for Windows (using the DB Manager plugin). I have a table with many columns and I am trying to perform a Group By function. ...
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2answers
39 views

PostGIS schemas doesn't show in QGIS

I try to use QGIS to display some data stored in PostGIS, some of schemas don't show except public; And it's a testing DB, so I have only one super user: postgres. I use PostgreSQL9.3. Anyone has some ...
0
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0answers
17 views

QGIS translate BAG surface to XYZ

I have a BAG (Bathymetry Attributed Grid) from NOAA which I wish to export to XYZ. The grid imports fine as a raster and plays nicely with most of the raster tools that I have tried. It does, ...
1
vote
1answer
235 views

How to change GDAL version in QGIS to get ECW import to work

I’ve previously been successful in importing ecw into QGIS 2.0 but the same methods (for example How to add *.ecw files to QGIS 2.0 on Windows?) have failed with a fresh install of QGIS 2.2 with ...
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vote
1answer
64 views

Exporting geodata from QGIS to Esri File Geodatabase?

For a project I need to create a set of vector data that I think I could do in QGIS. However the customer demands that the final data set needs to be delivered in a Esri File Geodatabase. Is there ...
0
votes
1answer
74 views

SLD parsing fail on GeoServer

I created a custom style on QGis and saved as SLD file. When i added to GeoServer, after validation it, i got an errors about parsing. Parsing failed for Filter: java.lang.RuntimeException: Unable ...
0
votes
1answer
42 views

QGIS and Oracle Spatial database - rule based system in future version?

I (a geographer not to familiar with IT stuff) want to start a pilot with QGIS at a municipality I work for. We store our data in Oracle databases. When trying to open these databases (QGIS 2.2) using ...
0
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1answer
43 views

How to use a .qpt made in another project?

I'm trying to make maps in print composer of several different projects. I would like the maps to look the same, just for different areas, so I tried to use the .qpt that I made in the first project ...
1
vote
1answer
43 views

How to display information when a certain dataset is loaded into QGIS?

I need to show the quality information of a dataset that was manually created by me, that is saved as a text file. The text file will "pop up" when the dataset is added into QGIS. I have no experience ...
0
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1answer
30 views

QGIS: Comparing 2 attribute tables to discern unmatched attributes

In QGIS, I am trying to compare two different attribute tables. One is simply the updated version of the other. Each feature has a unique identifier. How can I return the number of unmatched records? ...
0
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0answers
22 views

Disabling QGIS layers context menu

Does anyone know how to disable items in the QGIS layers panel context menu? I am using QGIS 2.2.0 under Windows and have been experimenting with customization to allow use in a library context. It ...
0
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1answer
32 views

change the direction of the marker of a line in QGIS

I have a map with three lines. Each has a marker on it. I would like to reverse the direction of the topmost marker. So I open Style dialog and enter the expression "direction" * 180. The value ...
3
votes
2answers
63 views

“Levelling” elevation data coinciding with polygon?

I have a shapefile containing building geometries (polygons) and a elevation dataset. The elevation data doesn't perfectly match the buildings. I want to "flatten" the elevation data so that ...