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

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2answers
61 views

Scalebar gives error in measurement in Qgis: Different measurements of distance on OSM tiles and GoogleEarth

I've created a map of Bordeaux using the QGIS map compositor by following this procedure: Used the OSM plugin to display an OSM map and zoomed to Bordeaux Used the print composer to create a map of ...
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0answers
21 views

C# GIS Bing Maps

I'm developing an application in C# and I want to show my data on map like Bing maps, so what is the best the best way to do that. I have seen SharpMap but I could not load Bing map to it. please ...
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1answer
79 views

QGIS in Windows Embedded Handheld 6.5?

Does QGIS work in Windows Embedded Handheld 6.5? I am planning to buy an outdoor mapping device, but I'm not sure if this OS supports QGIS. Thank you!
2
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1answer
60 views

World map different projection

I want to display something on a world map. I have these shapefiles http://thematicmapping.org/downloads/world_borders.php I want my map to look something like this: or I am using QGis. Is ...
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0answers
21 views

Using googe places api search results in desktop QGIS

I came across another post that asked this question Formatting Google Places API GeoJSON and Import to QGIS? and I am wondering if it is possible/allowed, and if anyone has done this and what is ...
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1answer
37 views

Reduce number of points, keeping most recent data within a given distance

I have a HUGE dataset of points that were collected along a route. The data may change daily, and the most recent data is the most important. What I would like to do is take only 1 point from a given ...
3
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1answer
53 views

Neither “Photo2Shape”, nor “Geotag and import photos” works

System: Windows 7 QGIS 2.6 Brighton and QGIS 2.8 Wien Photo2Shape 0.5.0 EXIFread 2.0.1 Geotag and import photos 1.1.0 EXIFtool 9.90 Problem: EXIFtool and EXIFread are installed correctly. Both ...
2
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1answer
116 views

QGIS 2.8.1 OpenFileGDB compatibility with ESRI FileGDB?

I am trying to view an ESRI FileGDB in QGIS 2.8.1. Do I have to use "add vector layer" - "directory" - "OpenFileGDB" in order to open and view the data? Is there a way to specifically open the ESRI ...
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3answers
52 views

How do I use the field-calculator in QGIS to return the name of a country from a different shapefile?

I have a shapefile that consists of a list of archaeological sites with the x and y coordinates. I have an Natural Earth shapefile for the countries of world. I was wondering how I go about ...
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1answer
33 views

Save view or map in QGIS

Is there a way to save the current shapefile, raster, etc selections in QGIS and then bring them up all at once later? For example, I find myself re-creating maps over and over because I need ...
1
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1answer
59 views

CAD line drawing to GIS polygons pt II

I'm a (reasonably) proficient GIS user (mostly QGIS, but some Arc GIS) who has been thrown the conundrum of converting/importing CAD urban planning drawings (2D drawings produce in AutoCAD 2014) to ...
2
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1answer
56 views

Geometry in QGIS 2.6

This might be a beginners question, but I could not find an answer on the internet. I drew a couple of polygons in a vector layer and I am trying to get some basic geometric information into my ...
2
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1answer
44 views

How can I open a jpg format with QGIS 2.8?

I'm having some difficulties opening the jpg format at QGIS 2.8. It opens, but nothing appears. Thanks for your help!
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1answer
61 views

Creating polygons layer from point layer with conveks buffer

I have a point layer of >750000 points representing dwellings with district heating. Now, I want to create polygons for every n of points with a distance of n meters to the next point. I have a ...
2
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0answers
94 views

QGIS server 2.6.1 upgrade to 2.8.1 error

I plan on upgrading QGIS server from 2.6.1 to 2.8.1. At the time of 2.6.1 is used, however, to 2.8.1 found the map service can not be used, the emergence of internal server error 500. ...
2
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1answer
27 views

Loading Raster using QGIS API in Windows

I am trying to develop a C++ application using QGIS. I have to load a tif file and show it. First I wrote an app similar to samples on the internet. It works on Linux, but it does not work on ...
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1answer
57 views

QGIS 2.8 Convert a vector to a raster layer

When I change a vector layer to raster using raster button->converse->Vector rasterization in QGIS2.8. I get only a black picture. Why is that so and how can I convert a vector layer to a raster ...
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1answer
19 views

How to turn a vectorgraph into raster correctly?

In QGIS2.8 version, I added several points in a point vectorgraph. When using the grid - > Conversion - > rasterized vector , The results turn out into a black figure. How to turn a vectorgraph into ...
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0answers
30 views

Wrong Scale Bar in Map Composer

I am attempting to add a scale bar into QGIS Map Composer for a single layer showing a map of Jervis Bay, NSW Australia. I have changed both the project and layer CRS to 'MGA56 (EPSG:28356)' and have ...
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1answer
179 views

Openlayers not rendering on QGIS 2.8

I uninstalled QGIS and removed all files on the computer with QGIS in them. I then reinstalled version 2.8. I still get the same problem that google streetmaps does not display. When I try one of the ...
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1answer
39 views

Qgis raster calculator not giving output

I want to calculate some result using QgisRasterCalculator and using the code mentioned below.Problem is i am not getting any output raster also if i use this formula in raster calculator it gives ...
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1answer
39 views

CAD line drawing to GIS polygons

I'm a (reasonably) proficient GIS user (mostly QGIS, but some Arc GIS) who has been thrown the conundrum of converting/importing CAD urban planning drawings (2D drawings produce in AutoCAD 2014) to ...
0
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0answers
26 views

Parking analysis using QGIS or ArcGIS for Desktop? [duplicate]

From the data I have: parking zones, the number of parking spaces per parking, number of parking per month for each parking lot, and the average price of parking for each car park. In addition I have ...
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0answers
41 views

polygon shapefile R extract issues

I'm trying to do simple RF classification in R based on https://gis.stackexchange.com/a/39103/48810. The code I am using is as follows: require(sp) require(rgdal) require(raster) ...
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0answers
86 views

Problem with installing qgis server

I tryed to install the qgis server on my windows 7 64x machine. i follow the link of anita graser and run the osgeo4w setup for the 32bit version. I installed apache und it works fin, but the qgis ...
2
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1answer
38 views

How to import the “QGis” class in a script?

I want to check which type of geometry the current layer has. Therefore I use the PyQGIS documentation on Access to Geometry and my code looks like: if iface.mapCanvas().currentLayer().wkbType() == ...
2
votes
1answer
28 views

QGIS 2.8 Labels are lost when setting map rotation with crs on the fly

I was working with QGIS 2.8.1. When I set the map rotation in canvas the canvas rotated as wished but all the labels were lost. I found out if I disable CRS OTF(on the fly) all the labels will be ...
3
votes
1answer
65 views

QGIS 2.6 summarizing area (m²) for current atributes

If I have a code for each polygon and I have counted the area in m² for each of them (all this information is in single columns). How can I summarize these areas by codes (for example summarize all ...
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0answers
27 views

QGIS Atlas generation - Export atlas as images - only JPEG, want PNG

I can't find an option to choose image format while exporting Atlas, choices are Export atlas as images / as SVG / as PDF The dialog that opens has no options and it always exports as not so good ...
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0answers
18 views

Incorrect Acreage QGIS 2.6.0

I have six polygons, all of (fairly) similar size. The first one is 8 acres, the others are obviously wrong with 120,000 acres, and 106,000 acres and so on. I am calculating with the field calculator, ...
2
votes
1answer
94 views

Polygon centroid coordinates update error

After a week of unsuccessful fighting I'm forced to ask for your help. I have created a table 't_excavations' with fields 'id_excavation', 'geom' (MULTIPOLYGONE), 'longitude', 'latitude' CREATE ...
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0answers
36 views

heatmap dislocated when generated [duplicate]

QGIS 2.8.1 Does anyone have the answer to why a generated heatmap appears without coordinates and therefore is not on top of the vectorlayer that it was generated from? I checked the CRS setting but ...
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1answer
19 views

Problem moving layers in QGIS

Just wondering if anyone ever experiences any problems moving layers? I have set up QGIS in the office and it works brilliantly for everyone apart from one of my colleagues who finds that on odd ...
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0answers
10 views

GRASS_INFO_ERROR(16605,1) while running a GRASS tool

I have a fresh install of QGIS 2.8.1 with the GRASS plugin on Ubuntu 14.04. I opened the mapset I've created in QGIS 2.6.1 on Windows 7. Then I tried to run v.in.ascii Grass tool and I got following ...
2
votes
1answer
24 views

Polygon shapefile field calculator problem

My project is set in WGS84 only, and I have checked 'enable on the fly'. I have created a polygon shapefile and my problem is that when i use field calculator in the attribute table on my polygon ...
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0answers
24 views

Update shapefile name with layer name

I had a layer that I split by fields. The resulting files were given a name. I updated the names of the resulting layers in QGIS but have realized that the shapefiles have not been updated ...
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0answers
11 views

Configuring Identify Feature Tool in Geomoose

Currently,i am workiong on geomoose.And i Faced a problem with the identify tool.Plotted some point data in geomoose and the identify tool displays more than one result for a single point.Is this ...
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0answers
20 views

Overlay polygons on raster in different projections

I'm overlaying polygons on a raster to get the average value inside the polygon (using SAGA->Shapes-Grid->Add grid values to shapes in the QGIS Processing Toolbox), using a geographic and a ...
1
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1answer
30 views

Connecting polygon accidentally deleted - filling in the gap

New QGIS user, Brighton 2.6. I accidentally deleted an elongated (lots of "peninsulas" polygon that represents a stream-based habitat - two gaps on SW boundary and two on the northern boundary ...
2
votes
1answer
51 views

Euclidean direction

i'm trying to calculate the euclidean direction, in ArcGIS its very easy using the Euclidean Direction tool of Spatial Analyst but in QGIS i don't find how to do it. Any tips for this in free ...
0
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1answer
107 views

QGIS: How to add a second polygon that is exactly 5km larger in all directions?

Given is a map with an airport. Within a distance of 5km around the runway there is a so called no fly zone for drones (in Switzerland). I want to show this zone in a map. What I would like to do is ...
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0answers
36 views

QGIS shape file crop

I have a big shape file with greece roads network and i want to extract from it only one part of an island of Greece and make an new shape file with only the attributes of the island.
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0answers
28 views

QGIS Desktop 2.9.0 - ZoomOut doesn't work [closed]

In the QGIS Desktop 2.9.0-Master the Tool "zoomOut" doesn't work. The "zoomOut" have the same operation of the "zoomIn". This is a bug? I don't know where I report this bug, because I know the 2.9.0 ...
1
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0answers
24 views

Which VS projects are needed for a custom QGIS build?

Environment: VS 2010 Win 7 QT 4.8.6 QGIS git Src OSgeoW4 I have built the source for QGIS, in order to use it as a base for a custom application. I wanted to know what projects are 100% ...
2
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0answers
38 views

QGIS distance from point to line along a specific bearing

I've got a vector layer with points (representing customer locations) and another vector layer with a line (representing the coast line). I want to calculate a "smart" distance to coast. Specifically, ...
0
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2answers
34 views

add attribute information from polyline to a point shapefile (QGIS or ArcGIS)

I was wondering if, and how, it is possible to add attribute information from a polyline to a point dataset. I have a network layer with information per street how many scooters went over this street. ...
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1answer
30 views

QGIS how to save loaded min/max values for raster layers?

I am working with many layers. Each time I open my saved project, I must reload the min/max (properties/style) values. Is there a way to turn off the default 2% cut?
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1answer
56 views

Heatmap is upside down

I have a point file saved as a shapefile, now I want to produce a heatmap of the values. However the heatmap is projected upside down. I suspect my y coordinates are inverted or negative but I do not ...
1
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1answer
56 views

Is there a way to save a spatial join as .sqlite?

I'm joining data from PostGIS and SpatiaLite databases in QGIS using the "Join attributes by location" (Vector -> Data management Tools) tool. However, this has a big limitation - I can only save the ...
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1answer
30 views

Trouble calculating attribute values in pyqgis [closed]

I recently posted another question about calculating unique IDs for features using python and qgis here Calculating unique ID value for a field in QGIS using python. I am trying to use the same ...