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

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2
votes
1answer
123 views

Can a QGIS GeoJSON vector layer be held in-memory?

When I add a vector layer to QGIS using data in GeoJSON format, data from the server are being displayed. The problem is that every change of the map extent (pan, zoomIn, ZomOut) is causing a request ...
0
votes
1answer
296 views

Crop one shape file using another shape file in QGIS

In QGIS 2.0.1, is there a way to automatically slice up one shape file and export it as multiple files using polygons defined in another shape file? I have a detailed shape file that categorizes the ...
3
votes
2answers
2k views

Exporting GIS Images with Transparency

I'm trying to export some images of Gulf of Mexico infrastructure that will later be used for non-GIS purposes as overlays onto sea current/weather maps (likely in photoshop). I have no clue how to ...
0
votes
1answer
94 views

Copying the numeric portion of an address to a new field

I'm attempting to copy just the numeric portion of a street address into a new table using the Field Calculator in QGIS. The expression I'm trying to use is: left( "SITE_ADDR", strpos( "SITE_ADDR", ...
2
votes
1answer
202 views

QGIS crash when I try print geometry

I do (it works): from osgeo import ogr inputds = ogr.Open(r'c:\temp.shp') inputlyr = inputds.GetLayer() for i,feature in enumerate(inputlyr): print i, feature.GetGeometryRef() Output: 0 ...
0
votes
0answers
14 views

How to get linestringe from kml into shp or postgis [duplicate]

Im looking into extracting linestrings from a kml file into a shp file or postgis db. Each linestring would be a feature/row. How would I go about it usinge ogr2ogr or python? I'd like to get ...
3
votes
1answer
996 views

How to save geopackage gpkg file with QGIS

I read about the new geopackage file which shall have the potential to be the shapefile of the future. But i can't find a way to save a file in QGIS as gpkg. In ArcGIS it might be possible. I would ...
2
votes
0answers
610 views

How to edit metadata in QGIS

What possibilities exist to edit metadata in QGIS? I did only find the plugin Metatools which is experimental and did not work for me. So are there other possibilities than Metatools? -In Metatools I ...
6
votes
3answers
6k views

Create fishnet grid in QGIS

Anybody have recommendations for creating a fishnet shapefile using QGIS? The equivalent task of "Create Fishnet" in ArcGIS.
1
vote
1answer
122 views

Creating an irregular points grid — one with regular along-slope distances [closed]

I am currently using QGIS to try and prepare a series of equally spaced -- along the terrain slopes -- sampling points within various NVC (National Vegetation Classification) sites in the UK. I am ...
1
vote
0answers
29 views

Python problem during CADInput installation

I was trying to install CADInput (version 0.60) on 2.4 Chugiak and 2.6 Brighton as well. In both cases I got an eror message during installation. For me the following extract of that message might ...
3
votes
2answers
128 views

QGIS calculates main soil type of polygons from another polygon layer

I've been working with qgis for a while but somehow I never fiured this out, so I thought it's time to ask. I have 2 shapefiles. a polygon layer from nearby fields (SHAPE1 (the red outlines)) a ...
0
votes
2answers
185 views

Delete shapefile object

I have a shapefile layer which comprises of a series of lines which represent archaeological features. I cannot delete individual lines as the delete button is greyed out. Is there a way for me to ...
2
votes
1answer
90 views

QGIS Plugin to add point to map without creating a file

I am looking for a QGIS Plugin to add a point to the map by entering it's coordinates. The point should only be there temporarily (as long as the QGIs project is open) and not be saved in a file.
0
votes
2answers
319 views

QGIS 2.4.0 Setting raster layer to singlebandpseudocolor using minimum and maximum raster values

I am using QGIS Chugiak 2.4.0, and I have some code in which I want to: Add raster layer to map canvas Look for the minimum and maximum raster value Apply singleband pseudocolor render type for the ...
3
votes
0answers
102 views

Why do each of my buffer-polygons have different areas

I`m using Qgis 2.2 and 2.4 and loaded a wms-map using the coordinate system ERTS89 UTM 32N. I set 8 points (all in on shp-fileand in UTM 32N) on various locations on the map. After that i created a ...
2
votes
1answer
136 views

What is the expression for getting a subset of characters in QGIS Field Calculator?

I have a column of 10 character names e.g. L3NAM1988K. How can I delete the first 5 characters and the last 1 character using an expression in the QGis Field Calculator?
0
votes
0answers
44 views

QGIS 2.4 under Debian behind a proxy Plugin Repository

i'm having a problem to connect the official QGIS Plugin Repository in QGIS 2.4. I'm working in a company which uses a proxy to control web access. The plugin repository is available over the proxy ...
4
votes
1answer
163 views

What is the fastest way to digitize features on a map?

I'm currently using QGIS basically to trace a bunch of polygons to show individual ponds from google maps. Some of the geometries can be pretty oddly shaped and using the nodal digitizing tool gets ...
1
vote
0answers
280 views

Print Composer QGIS 2.6, how to expot image?

When i finish map in print composer and click on Export to an image format and after i go to folder where i saved it there is no image. If do same with Export as PDF i get PDF file but cant open it ...
2
votes
0answers
88 views

Percentage cover using QGIS?

I need to calculate the percentage of coral cover (polygon layer) in a 1 km radius around each record of fish (point layer). There’re about 4000 points (blue squares in the image). I am new to QGIS so ...
1
vote
0answers
80 views

raster and vector misalignment

my vector and raster datasets align perfectly fine in Arcmap but not in QGIS, any suggestion on solving this dilemma is very much appreciated.
1
vote
1answer
125 views

Remove cell boundaries of raster pixels converted to vector format

I have a solar radiation shapefile with 10 km x 10 km cells. When I put it on QGIS, many pixels with boundaries take place. Please see the following image: How can I remove them in Qgis?
0
votes
0answers
41 views

QGIS font symbol problem

Where qgis store the fonts. I try to find the directory but i cant. I transfer my symbol to other pc and i realized that have missing fonts and this is the reason that my symbols is wrong
2
votes
2answers
337 views

merging raster aerials in QGIS issue

I follow the instructions here very closely and yet every time QGIS gets caught in a loop. It takes a few small rasters totally less than 100mb and creates HUGE gb files and will not stop until ...
2
votes
2answers
222 views

Calling QGIS from MacOS python

I would like to import qgis.core and utils from my own copy of python. I do have PYQT4 installed there. I'd be happy to add to my PYTHONPATH or sys.path.append in my code, where do the qgis modules ...
0
votes
1answer
129 views

Missing Plugins in QGIS 2.6

Do I need to re-install plugins after upgrading to 2.6? Not all the plugins I had on QGIS 2.4 appear on 2.6.
1
vote
0answers
1k views

QGIS 2.6. How to move labels with “easy label engine” tool

In fact I'm looking for an similar tool like "converting label to annotation" as you can find it in ArcGIS. The "easy custom labeling" Tool in QGIS seems to come close to the ArcGIS solution. However, ...
0
votes
1answer
71 views

Can I include polygons that lie across boundaries when using the clip tool?

I am trying to create a map consisting of two vector layers showing a country divided into districts and contaminated areas within the country. However, since I'm only interested in the ...
1
vote
0answers
33 views

Font styles problem

i have problems with Font Styles in qgis. I have created fonts symbols in my system but when i open the same qml in an other pc the fonts is rong. I try to export my symbols in xml but nothing. please ...
1
vote
0answers
121 views

QGIS - Select intersecting features within Value Relation Widget

Does anyone know if it is possible to filter records in the Value Relation Widget to include only those that intersect the current feature? We are trying to set up a layer for user input where we ...
1
vote
0answers
143 views

How to apply colour ramp to user-defined range of values for contour lines?

I have contoured elevation data, across a number of shapefiles, at 10m intervals. Each tile has a different range of values (min - max). Under Style > Categorized, I can only apply the colour ramp to ...
1
vote
0answers
1k views

How to manually add texts on the map in QGIS?

Is there another way to put river, towns etc names beside labeling in QGIS? Can you manually type text determine size and place it where and as you wish on the map?
1
vote
0answers
21 views

QGIS Extract elevation data only for one country [duplicate]

I have a map built with a shapefile for country contours and a raster from .hgt files with elevation representation. How can I only select the area corresponding to the country? I found some thing ...
2
votes
1answer
235 views

From CSV file (latitude and longitude fields) to point .shp

How i create a new point shapefile from CSV table? If i have a CSV file with a latitude and longitude fields, is there a method for to have in output a puntal shapefile?
1
vote
0answers
105 views

Old GDAL/OGR version with QGIS from ubuntugis in 14.10?

Installing QGIS 2.6 from ubuntugis installs an old GDAL/OGR (ogrinfo --version GDAL 1.10.1, released 2013/08/26) - it should be 1.11 for support of the Open FileGDB connector in QGIS 2.6 So I don't ...
1
vote
0answers
109 views

Is there a way to create layer summary Pie Charts?

In Qgis2.6. I want to create a pie chart to summarize the layer data. I have a layer of land use polygons (woodland, agricultural, urban etc.). I want a pie chart to show the % of each land use in the ...
1
vote
2answers
174 views

Where to find the “contours from points” model in QGIS 2.6?

I can't find the example model "contours from points" in QGIS 2.6. Is there another tool for creating contours from points, besides the QGIS Contour plugin?
2
votes
2answers
195 views

“Phantom” features showing up in QGIS 2.4

I tried searching for this, but am unsure exactly what my problem is. I am using QGIS 2.4 on Windows 8.1. I have a project in which I have been digitizing from OpenMaps. Last night I was doing some ...
4
votes
3answers
603 views

How can I avoid incomplete wms layers when exporting large maps in qgis 2.6?

I have a QGIS 2.6 project with around 20 vector layers and on wms layer (working on Ubuntu 14.04). WMS rendering works OK, altough a little bit slow, and exporting A4-size maps also works properly ...
0
votes
1answer
107 views

QGIS Print Composer producing angled graticule lines that look like rectangles instead of squares?

I just tried to create an extremely simple map made of one layer loaded as WMS layer from Croatia's geoportal (http://geoportal.dgu.hr/wms). I successfully loaded the necessary layer and created ...
1
vote
1answer
193 views

QGIS graticule coordinates in print composer starting from 0?

I am not sure how to explain the problem correctly as my English isn't as great as it should be - but let me try anyway. I just tried to create an extremely simple map made of one layer loaded as ...
2
votes
2answers
1k views

How can I transfer waypoints and tracks from Base Camp into QGIS2.6?

I'm working on transferring all my field data from Garmin Base Camp onto QGIS. This is an attempt to overcome the learning curve from basic trail GPS mapping programs to the real thing. I'd like to ...
2
votes
2answers
264 views

Why does clipping polygons result in no features?

I'm using QGIS 2.6. I'm trying to clip the polygons in one layer by another but cannot get the results I expect. I have a layer with wetland areas, and another layer with the boundary of my client's ...
1
vote
1answer
317 views

Project from Datum Nad27 to WGS84

This should be simple: have a shapefile in UTM z16 DatumNad27 and want to transform it to Datum WGS84 latlon I am using Qgis 2.6 Sorry I am going to clarify, with the steps taken: 1- XY data of a ...
1
vote
1answer
251 views

How to set the Measure Tool Ellipsoid Default Behavior?

Using QGIS 2.6.0 Brighton, I want to overlay a shapefile (EPSG: 26910, Nad83 UTM10) over OpenLayers Google Satellite (EPSG: 3857, Pseudo Mercator), and reliably measure distances. Furthermore, I want ...
1
vote
3answers
185 views

How to narrow raster features to single cell width?

Are there any tools or existing workflow which convert raster features (such as roads, rivers, electric lines etc.) which are (or can be) multiple cells wide to a single cell widht (i.e, center line). ...
2
votes
0answers
106 views

QGIS Problem with extract and warp modules in model builder

I have problems using the gdal modules extract and warp in the model builder. They run correctly when started without the modelbuilder, but when I integrate them in the modelbuilder they won't work. ...
0
votes
1answer
92 views

Contours with negative values using the model example in QGIS?

I have a data set of water level ranging from -6 m below sea level to +30 meters. But when I use the model example for creating contours from points, the minimum contour value is zero (0). What can be ...
4
votes
1answer
1k views

What's the QGIS Legend Format Syntax to label percentage values?

I asked a question about formatting legend text a while back and I'm happy to see the issue has been solved in QGIS 2.6: How to remove trailing zeros from QGIS Graduated Style Class labels? But I'm ...