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

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Graphical modeler in QGIS. I can't find a model

I'm a doing a tutorial for QGIS and at one point I have to use 'Join attributes by location' model but I do not find it in the Graphical modeler. Does it have to be there? I have to download it from ...
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16 views

qgis-bin.exe - System Error

I'm running QGIS 2.8 Wien on Windows 8.1. I got this error: The program can't start because qgis_core.dll is missing from your computer. Try reinstalling the program to fix this problem. I ...
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11 views

QGIS distance matrix: wrong metric distance

I used the lineair distance matrix tool in QGIS 2.6 My coordination system is metric (national Dutch RD new) The results have the wrong decimals, as shown below. How can I fix this? (showing unique ...
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12 views

How to define layer in QGis like in AutoCad?

I have imported a dxf file into QGis. While the importing processes split my dxf file into three layers - Point, Linestring and Polygon, which are different from the layer in AutoCad. I found the ...
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11 views

QGIS Georefencer Failed to compute GCP transform

I am a new QGIS user. I am trying to georeference a scanned paper map. After uploading map to the georeferencing utility and assigning 12 ground control points to map and assigning a datum I get a ...
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1answer
17 views

Cost Distance Analyst In QGIS?

Are there any tools, plugins or methods in QGIS which allows for an analysis of the best path between two points using least cost path method? As shown below ArcGIS has several distance tools.
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9 views

convert .shp to .gpx with selected attributes

I need your help, I working with qgis 2.6/2.8 (1.8 is installed too) Right now I planning an inventory and want to convert a .shp file to a .gpx includind the Column "fid" from the attribute table. ...
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2answers
18 views

how to color polygons with random color in QGIS

I have a map with a large number of polygons that I want to colour individually for display purposes. There is not particular pattern required, only to present them as individual catchments in a ...
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2answers
22 views

Visualizing multitemporal rasters scenes, side-by-side in QGIS?

I have to classify land cover/change every 2 months. Every 2 months about 5000 random selected points are classified, using L7/L8 images. For this, images from 5 different dates are show, ...
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19 views

Creating Mapbook with Hyperlink texts in PDF using QGIS Atlas?

I'm using QGIS 2.8.1 Atlas and creating a mapbook using a grid layer that has an attribute with a URL in it. I want to use the URL in the attribute to be a hyperlink in the PDF once its published. ...
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1answer
28 views

Why is QGIS map not sharp when Printing it?

This is my first project so please bear with me! I have downloaded the OS StreetView Map and loaded it in to QGIS, the map is 1:10000. I am running a 27" Mac, but when I view the map on screen at ...
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1answer
16 views

How do I remove the group name in the QGIS legend renderer

I am using QGIS 2.8.1 and the print composer to create a map for export. There is a lot of positive things to be said about the QGIS print composer. It gives the user good access to the rendering. I ...
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1answer
44 views

How to create several maps showing different layers but the same area?

I know about the print composer's atlas generation tool, which allows users to create multiple maps that show the same layers/features but different geographical areas. What I am looking for is a ...
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0answers
17 views

QGIS plugin saving layerstyle

I tried to use: Error = "" vLayer.saveStyleToDatabase ("styleName", "description", True, "", Error) in a python-plugin for QGIS 2.6 to save the data but no success. No error is written. First of ...
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1answer
16 views

View feature space for multi-band files

I am trying to plot a feature space (scatter plot) for some SPOT images in QGIS 2.8.1. I know a histogram is available in the file properties, but I want to plot eg. Band 1 vs Band 2 to see the ...
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9 views

Is it possible to host QGIS web application in Oracle weblogic server

I am new to QGIS and I want to know whether it possible to host QGIS through oracle web logic server instead of apache web server.
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0answers
15 views

Is it possible to edit qgis features in the web client by using Qgis server?

I am new to qgis and I am trying to build a application which runs on web by using qgis server Is it possible to edit features or adding feature on web by using Qgis server. Thanks in advance...
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1answer
22 views

Google+ photo in Qgis

I'm trying to use the kml file in qgis but only the html code is being stored in the attribute table. How to show the uploaded image(Google+) in qgis. It works fine in Google earth.
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27 views

Converting DEM to Floating Point Raster (FLT) using QGIS?

I am looking to convert a DEM from AutoCad to a floating point raster file type in QGIS. I am relatively unfamiliar with the .FLT file.
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16 views

Getting all Google Earth Search Results into a KML for QGIS

This question has been asked by others before but there doesn't seem to have been a response, so maybe someone can help me here. I am using Google Earth to search for business premises in a UK city ...
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0answers
13 views

Generating a plot by varying the buffer around each point

I want to create a plot like this: Basically, I have a bunch of points (properties), some of which have (and some of which don't) have Property X (e.g., a fence). I want to find out how the ...
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20 views

Clipping vector data (Point) with one class in symbolised raster

I have some .asc raster data I symbolised with ranges in two classes. Say 2.145 to 10.000 and 10.001 to 30.1254. Now I want to clip vector data with the area covered by 2.145 to 10.000. How can I ...
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1answer
85 views

How to make maps out of imagery?

I am working for a client and we chose to use OpenGeoSuite as our system. Our client will be flying a plane over farm land capturing images that we need to put in our system. From my understanding ...
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0answers
17 views

Running customized script qgis

I want to run a customized script in Qgis (namely that: Ortho Projection produces artifacts). With export PYTHONPATH=$PYTHONPATH:/PATH_TO_FOLDER I set the pythonpath in the folder where the script ...
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1answer
41 views

Export GIS data to interactive report

Hopefully this is a GIS question although it crosses boundaries: I'm looking into the possibility of creating an all-in-one portable report derived from data compiled in GIS. This would contain a ...
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10 views

Add QGIS raster layer to Google Maps API

Is it possible to add a hosted QGIS Raster layer into a Google Map? Thanks.
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13 views

Problem with QGIS raster interpolation from a point shapefile after duplicating the shapefile

Let me explain a problem I had with QGIS to see if somebody else has experience it. I created a raster from a point shapefile through the Raster-> Interpolation menu with no problems. After that, I ...
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1answer
23 views

How to change the data type of columns of a vector layer in qgis?

Is it possible to change the data type and attributions of data in qgis? Almost all of the variables which contains numbers should be changed in all of my vectors. In ArcGis the data type is ...
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9 views

qgis (WIN): change settings from registry to INI

I have built qgis on windows 7, and need to stop the settings from being written to the registry. Is there a way to have an ini file created and used instead? (Having trouble finding that code)
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2answers
72 views

Calculate distance between a set of points: lat and long in QGIS or R

I have shapefiles containing the location of several individuals along several months. Positions were documented with a 30 minutes interval. Tables contain the following data fields: collar (ID), ...
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40 views

Qgis 2.6 and 2.8. Custom form and Init function

I try to apply the good tutorial written by Nathan "Custom feature forms with Python logic". I try his sample on qgis 2.6 and 2.8. I altered the sample to allow field initialization by setting ...
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1answer
23 views

Sampling one shapefile with polygons of another using R?

I have two shapefiles that partially overlap. One (the bigger one) consists of several polygons which represent fields I am interested in. The second, is a rectangular shape that overlaps about 30% of ...
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23 views

QGIS 2.8 Export Atlas as PDF

I'm having an interesting problem: when I go to export the Atlas to PDF, the window to save the PDF on my hard-drive flashes very quickly and then disappears. The net result is that I cannot export as ...
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1answer
22 views

Adding a GeoTiff created in QGIS to Map Box

I have created a heat map in QGIS and have successfully exported it as a Geotif file. I exported the file as a Rendered Image to include my classifications and colors. However when I pull the data ...
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24 views

QGIS Attribute Column disregards (-) signs and uses only first digit of integer [on hold]

After importing a csv file into QGIS, the layer attribute table sorts one of the columns without regard to the minus sign. For example : "-1.2 is sorted with "1.2" instead of coming before "0", ie: ...
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1answer
53 views

Is it possible to mix italic and normal font in a label?

I have concatenate the values of two field like "BYKV_BTYP" || '/' || "FFH" Is it possible to draw the value of the column "FFH" in italic if it is not empty and the value of "BYKV_BTYP" ...
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1answer
18 views

Can you change the layer name of an output vector from a processing script in QGIS?

I define an input csv file and an output like so in my processing script: ##Input_CSV_File=file ##Output_Shapefile=output vector The output shapefile is added to the map automatically when the ...
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21 views

QGIS table join with multiple fields

I am trying to join info from a DBF to a shapefile. There isn't a perfectly unique identifer. Is there a way to join the tables with 2 or 3 fields? The simpler the better. I am just getting familiar ...
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19 views

Problem to visualize raster data from PostGIS in QGIS

I have two raster files and i'm trying to load these data into PostGIS using raster2pgsql. Here is the syntax that i used: raster2pgsql -c -s 4326 -I -t 100x100 *.tif public.deforested_rasters | ...
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28 views

Something changed in QgsVectorDataProvider().changeAttributeValues() in QGIS 2.8?

I have a plugin that works with QGIS 2.2 but does not work with 2.8. Only deleteFeatures() works fine, but changeAttributeValues(), changeGeometryValues() and addFeatures() not. I receive r == False ...
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2answers
28 views

Counting buffer overlap in QGIS

For my thesis I'm modeling the identification of recreation areas. Therefore, there has been a survey where people were asked to specify where they recreate. They had to indicate this place on a map ...
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2answers
41 views

Archaeological spatiotemporal map

So I have been trying to use Time Manager to make a spatiotemporal map of artefacts found on a archaeological site. My goal is to show if there is areas on the site wich concentrates artefacts having ...
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29 views

Python Plugin not Working when I degrade the QGIS version from 2.8.1 to 2.0.1

I removed QGIS 2.8.1 from my system with Ubuntu 14.04 OS, as I was not satisfied with this version because it was crashing when I loaded data from my local server. Now I again installed QGIS 2.0.1 but ...
3
votes
1answer
33 views

CRS not embedded by maptools in R

I'm using the maptools package in R to merge some data to a shapefile. When I open the original input shapefile in QGIS, QGIS automatically picks up on the CRS. When I open the output shapefile from ...
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0answers
23 views

How to display table with more than one image from postgis in mapserver?

I have 3 tif files in one postgis(2.1.5 ver.) raster table. ( load with raster2pgsql) And i have mapserver MapServer 6.1-dev. I need to display table from postgis in qgis via mapserver. P.S I trying ...
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0answers
29 views

Count intersections of lines with polygon

I got a dataset of streets, which are displayed as line segments. In another, independent dateset I have roundabouts as a point geometry. Starting from these datasets, I want to count the number of ...
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2answers
46 views

Is a multi-database select possible with DB Manager?

I have data in two locations: geometry data (with attributes) on a PostGIS server (read only) a geometryless table on a local SpatiaLite DB (read+write) I need to select features based on data ...
2
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0answers
28 views

AIS directly on QGIS

I'm looking to have AIS data ( Carbon + from True Heading) in real time on QGIS. From AIS I got the data as following: !AIVDM,1,1,,A,35?7p455h53k<LH>;dR`wbgoP000,0*7F After using a specific ...
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2answers
31 views

Writing PyQGIS Output to Shapefile

I'm trying to find the closest point on a line to another point as in this post. However when I try to write the result as a shapefile I get an error: TypeError: ...
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1answer
30 views

No cadastral maps in the UK. Solutions/alternatives for a methodology?

I need help reworking a methodology in the absence of cadastral data in the UK. The aim is to plot a range of businesses in a UK city on separate layers (according to business type) as polygon ...