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

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1answer
18 views

spatial analysis by attribute value

I have two vector layers, one contains actual values (in this case % cover of native species), the other contains target vales of the same attribute. the polygons are not always of the same geometry. ...
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0answers
10 views

Join/convert points to polygons [on hold]

(I am using QGIS 2.6 Brighton) I have 2 shps, one points and another one polygons. I need to make them one. Is there a way to join them or convert the points to polygons? Vonoroi doesnt work for me ...
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0answers
23 views

How to zoom past 1:1433 with Openlayers plugin in QGIS 2.6?

I am editing the polygon shape file in QGIS 2.6 with the projection of "USA_Contiguous_Equidistant_Conic" but i can't able to zoom in the open layers like Google maps and bing maps morethan 1:1433 ...
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0answers
11 views

Field Calculator stopped working

The field calculator seems to have stopped working for one of my attribute tables (it works fine on others). No matter what I get it to express (I've tried simply 2*2, just as a test) it just produces ...
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0answers
19 views

How to Create a Minimum Bounding Polygon in QGIS [duplicate]

Does anybody know how to create a "minimum bounding polygon" from a set of polygons in QGIS or elsewhere? For example, in the figure below I can create a Convex Hull per the purple outline, but I'm ...
1
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0answers
9 views

Print Composer: Finder window disappearing when pressing save button?

I recently updated to 2.6.1 (using mac OS 10.10.1). When I'm in print composer, and I try to save my map (or open a new file, or do anything that brings up a finder window), the window disappears ...
3
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0answers
52 views

How to simplify polygon shapefile and maintain topology? [duplicate]

I'm looking for a straightforward answer that actually works...not a 'duplicate question' flag. None of the other solutions posted in similar threads actually work...they all have dead-end answers ...
1
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0answers
24 views

Snapping while measure in QGIS?

I've been reading here and there that snapping while measuring should work in QGIS, but i can not make it work for the life of me. https://hub.qgis.org/issues/8537 All the snapping options are set ...
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0answers
24 views

Mapfile generation from QGIS project

I am looking for a way to transform a QGIS project (.qgs) to a MapServer Mapfile (.map). I am using Quantum GIS 2.6 and MapServer 6. The layers are postgis tables. I would need something like this ...
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0answers
16 views

Is it possible to only have one Feature Attribute Window open in QGIS?

I suppose it's by design that when you click through(identify) your features, for every feature it opens the attribute window (which is good, i have enabled the checkbox to automatically open the ...
1
vote
1answer
26 views

How to customize the QGIS default GUI using Python?

Is it possible to hide/remove/customize the default ui of qgis using python plugin. I want to add my own menus and toolbars and remove default. If it's possible, which reference should I use?
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0answers
12 views

Aggregate nearby points to develop equally sized regions in QGIS

I have a list of 4,500 points (lat, long, unique id, attribute). I also have a service territory which all of the points fall into. I would like to break the service territory (polygon) into 6 ...
2
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0answers
14 views

Information On Supported Device Qgis Galaxy Tab 4 10.1 4G LTE

I need a tablet for outdoor work and i would know if this device "Samsung Galaxy Tab 4 10.1 4G LTE" works fine with qGis mobile application.
0
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1answer
46 views

Split lines by polygons in QGIS 2.4

I have a river network (lines) and a shp with states (polygon). I would like to split the lines at the state boundaries --> split lines by polygon boundaries. Is there a geoprocessing tool to do ...
2
votes
1answer
48 views

geting geograpic locations from an address list

I have a table with 150 addresses. I would like to automaticly generate a point shapefile/PostGIS layer from all of them. Is that possible in any way or do I have to search for every single address to ...
0
votes
1answer
25 views

Print Composer: Export PDF as raster with vector labels

Is it possible (or will it be possible in the future) to export a PDF/SVG as raster with vector labels? I'm using effects (blending, transparency etc.) which I can not export as vector. So I have to ...
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0answers
21 views

Frontal Detection of sst & Chlorophyll image

I'm searching for a tool in QGIS that automatically identifies gradients(fronts) in MODIS SST image ,draw the line and generates shapefile.The tool that I'm searching for should work similar to ...
0
votes
1answer
21 views

SQL-Like Inner Join on IDs in Two Layers in QGIS

Using QGIS v2.6.0-Brighton. This question is not about editing layers geographically in anyway. It is merely trying to find data from two layers as you would in an SQL Query and append an extra ID to ...
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0answers
37 views

QGIS 2.6 installation error [on hold]

Does anyone know how to fix this ? I used to have QGIS 2.2 and 2.4. I've completely removed 2.4 and installed 2.6 by OSgeo4W (Advanced installation). Everything, like GRASS, tora, udig is working ...
6
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0answers
48 views

Automated detection of tracks

Given an area with depressions in open area from; say all terrain vehicles driving on soft surface. The vehicles will cause parallel depressions (paths) of about 10-20 centimeters in depth and around ...
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0answers
10 views

Possible erros in using qgis network analysis library

I am trying to use qgis network analysis library but I am having a problem with a shapefile. When I construct the graph, I get an empty graph(no vertex , no Arc, nothing). The operation ...
0
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0answers
20 views

QspatiaLite Snapping fails if multiple target vertices within tolerance distance

I assumed that SpatiaLite's Snapping would snap to the nearest candidate vertex - however, it turned out that the result becomes unpredictable, if there are several target vertices within tolerance ...
2
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0answers
18 views

QGIS 2.6 automatically zooms to layer extent

Since I upgraded to QGIS 2.6 a mouse click (left or ricght) on any layer returns in a automatic zoom to the layers extent. Does anyone know how to switch off this function? Thanks. Thomas
4
votes
1answer
106 views

ArcGIS and QGIS compatibility

I work at a small planning commission as 1 of 2 GIS people, where we have 2 ArcGIS licenses. A volunteer recently starting working with us. He is using QGIS and mostly editing shapefiles. I ...
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0answers
21 views

Black polygon covering aerial imagery in QGIS?

I am using FSA 2013 aerial imagery, which I access via WMS in QGIS. In some locations the imagery is covered by a black polygon. The polygon only displays at certain scales. Then, if I zoom out until ...
1
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1answer
18 views

Labelling problem for Shapefile with Indic Fonts

On my computer (Ubuntu 14.10, 64 bit), I am using QGIS 2.6. I have a shapefile, where the names of the features are written in Indic Script (using Google Transliterate). When I wish to label them, ...
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0answers
15 views

Custom CRS in Qgis web - client

Hello I'm abit new here and I hope I'll even set the question right. Recently I've started to work on a project that will include displaying maps in qgis-web-client. At the moment I've set up the ...
2
votes
3answers
124 views

In QGIS is there a keyboard shortcut to open/close the layers panel?

Simple question really - as titled. Is there a keyboard shortcut, or even something like a toolbar button, which would make it easier and quicker to open (and close) the layers panel in QGIS (2.6). ...
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0answers
42 views

How to define the output raster resolution when rasterizing a vector?

I have a vector file which I want to rasterize and adjust its resolution to the reference map, in QGIS. I tried spatial_sync_raster function in R to set all the rasters into the same resolution as ...
-4
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2answers
25 views

QGIS python QgsApplication.pluginPath() return wrong path in Debian

plugin_path = QgsApplication.pluginPath() return wrong path in Debian /usr/lib/qgis/plugins corect path is : /home/web/.qgis2/python/plugins/ in windows the returned path it's ok.
2
votes
2answers
28 views

Coordinate Not Match - Convert Shapefile to Geojson

I'm a newbie at GIS programming and I have a problem with file conversion. I've tried to convert shp file to geojson, and the coordinates do not match. But when I try to convert it to kml, it goes ...
2
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0answers
17 views

Change no-data pixel value in raster: QGIS 2.6

I want to change the value in all pixels that are currently 0 to 800 in QGIS 2.6.1. 0 is listed as the no-data value in Properties > Transparency. I have unchecked the No Data Value box there. Then I ...
3
votes
3answers
99 views

Plotting Geo Points with “by arc centered at” Instructions

A recent Supreme Court decision redefined the legal boundaries of California along the Pacific Ocean: http://www.theverge.com/tldr/2014/12/15/7397085/supreme-court-california-boundaries-map I am ...
3
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0answers
31 views

QGIS Standalone C++ Application with Qt: “The program has unexpectedly finished”

I'm trying to develop an Standalone Application with Qt and QGIS API. There are several code examples that should work, but they don't. The Problem is that everytime I use "QgsApplication" the ...
1
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0answers
27 views

Opening a .rrd file format in QGIS 2.6?

Anyone knows how can i open a .rrd file (should be a raster)in QGIS 2.6? Comes with more 3 files. Should be any difference using it in OS or Windows?
0
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1answer
37 views

Best solution for tiling a geotiff?

I have some GeoTIFF files that I want to bring into the web. The spatial reference of these GeoTIFF files are multiple but are never WebMercator (EPSG:3857) and I need the web map to be in the same ...
1
vote
1answer
35 views

Problems exporting aerial imagery from QGIS

Looked around but couldn't find the answer to my question, so here goes. I am trying to export some decent quality (300dpi) aerial images from QGIS using the OpenLayers plugin. Sometimes it works, and ...
2
votes
1answer
33 views

QGIS Select overlapped feature

I have points that are not equal but the distance between them is so small that it can't be seen even at scale 200k:1. I calculated the distance between these points and add it as attribute. Now I ...
2
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0answers
30 views

filling the attributes according to intersection of two layers (Postgresql)

How to automatically fill attributes of a point layer according to the exact position in the polygon layer? I mean how to write a command in PostgreSQL to automatically fill the attributes by the ...
0
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0answers
33 views

QT GUI make for QGIS plugin

I was used to develop qgis2leaf on a Ubuntu machine and after each change on the PyQT dialog I've used "make" in the terminal to "compile" the GUI. How does this work on a Windows machine?
1
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0answers
32 views

Can't install QGIS 2.6.0 need SQlite3 on OSX Yosemite

I need to install QGIS on my mac with 10.10 Yosemite, I have already installed: - SQLite3_Framework-3.8.7.3 - GDAL_Framework-1.11.1-2 - GSL_Framework-1.16-1 - NumPy-1.8.0-1 but when I launch QGIS.pkg ...
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0answers
46 views

Do I have problem with compare layout QGIS vs. ArcGIS? [on hold]

I compare two layouts with same information in Arcgis and Qgis. When I did it, I realize difference between them. Notice that, we kept same datum for layers, same scale and don't project it, but ...
3
votes
2answers
55 views

How to insert a statement (e.g. copyright) which remains visible in mapping window?

I have a QGIS workspace that I need to apply a copyright statement to, so we can show data to clients without breaching the terms of our data suppliers. So far I've attached a label to a point in the ...
0
votes
0answers
19 views

Add feature symbology in pyQgis

While adding a polygon feature in QGIS 2.2.0-Valmiera, the representation symbology of that particular feature(which is in-progress) appears to be "filled" until the completion(rightclick) of ...
1
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0answers
15 views

How to show combine results or export them with PyQgis

I'm quite new in Pyqgis and i think Pyqgis could make my work easier. I first want to try with a simple code, here is what i want: merge some features and then export them in a shape files. For the ...
1
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0answers
14 views

Result names in modeler processing tools

the results of the modeler (processing tools) do not have the defined names. Is that an issue? For instance: When I'm using "clip grid with polygon" and I define the result name "clip". I expect the ...
1
vote
1answer
36 views

Correct installation of postgresql and postgis

Goodmorning everybody! I'm new in this forum and I hope you would help me in solving my problem. I'm practicing the use of Qgis and i need to setup postgresql and postgis on my mac yosemite 10.10. ...
2
votes
1answer
39 views

Merging shape-files freezes

I am trying to merge shape-files in QGIS it stops each time at 19%. The program doesn't show me any error messages so I don't know what is going on. Both shapefiles are 1.9 GB. Also I noticed that ...
2
votes
1answer
20 views

In QGIS, how do I automatically wrap my labels to fit in print composer window?

I am creating a set of hiking maps for the Continental Divide Trail. The trail is nearly 3000 miles, so I have about 200 individual maps and over 1000 information labels. I have a shapefile of ...
1
vote
1answer
38 views

QGIS install on Ubuntu 14.04 fails

Following the QGIS installation guide I have tried both UbuntuGIS and QGIS stable, but both fail with the error message: The following packages have unmet dependencies: python-qgis : Depends: ...