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

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QGIS 2.10.1. GRASS Algorithm Processing

While selecting the GRASS algorithms 'Processing algorithm: v.to.points - Create points along input lines' The error message came up: The specified GRASS GIS 7 folder does not contain a valid ...
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2answers
247 views

Couldn't add a column to attribute table (GPX layer) | QGIS

Running QGIS 2.10.1 on Ubuntu 14.04 x64. Going to add a column to the attribute table (GPX layer) but couldn't select any type. Then, failed - "Failed to add field 'NameTest' of type. Is the field ...
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2answers
128 views

Convert UK OS grid coordinates to decimal degree WGS84?

I've got a list of coordinates in the UK Ordnance Survey grid system e.g. "NZ 27 41" or "NZ 284 449". How do I convert them in QGIS 2.10 to decimal degrees so I can map them in QGIS in WGS84? BTW, is ...
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1answer
156 views

Adding OpenLayers basemap to a QGIS project changes the CRS to WGS 84 / Pseudo Mercator

I have a QGIS (2.10.1) project that contains several shapefiles, all of which are EPSG:3338 (NAD83 / Alaska Albers). The project property CRS is also EPSG:3338. All of the shapefiles display ...
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1answer
44 views

How to obtain coordinates from points with similar symbol in an image?

I would like to obtain a table containing all the coordinates of the triangles in the following image. I know it is possible to georeference my map using the georeferencing plugin and then I can ...
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1answer
316 views

Setting up a QGis Plugin Development Environment in Visual Studio and PTVS

Hello I would like to create a plugin using Visual Studio 2015 and Python tools (PTVS). I have a basic hello world plugin written outside visual Studio and It loads fine in QGis 2.10 Pisa. I have ...
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2answers
264 views

Splitting raster in QGIS? without cliper

I have polygon grid layer and raster image whitch want to split with my grid layer to have 9 new raster layers. I was doing it like this guy but my QGIS stop working and shut down every time when I ...
2
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1answer
62 views

QImage Not Defined [closed]

I am trying to get a set of map images with a Python script in QGIS. I load the background raster and my csv vector file and then I try to get the image. When I start the example from the PyQGIS ...
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1answer
128 views

Using lasmerge in QGIS 2.8.3 is not working: “…instance has no attribute”

Every time I try running lasmerge tool from LASTools within QGIS, I get the following error message: Algorithm lasmerge starting... lasmerge instance has no attribute '...
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1answer
88 views

Distance Measure using QGIS Field Calculator?

A QGIS newbie who can't for the life of them work out the expression needed to represent distance from a point. I want to show how a walkable a neighbourhood is. I need do to this by showing what ...
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2answers
129 views

QGIS Tool Scripting Help with “Select by attribute”

** I've gone back and edited (shortened and focused) my own question QUESTION: Why am I getting the error message "The following layers were not correctly generated: Output", when writing a script ...
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3answers
63 views

Keeping my own additional Python layer information for potential further usage in QGIS

I wrote a plugin that selectively loads simulation data to QGIS. That works fine, but the overhead to convert the data from my own format to QGIS takes a long time, as I have to generate an index and ...
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0answers
65 views

Cannot open QGIS form from PostGIS Layer with bigInt datatype for my primary keys?

Using QGIS 2.10.1 Pisa / PostgreSQL 9.4 with PostGIS. In PostgreSQL I have column oid with datatype is bigINT as primary key. These are 16-digit numbers. In QGIS I can read the table as a layer and ...
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0answers
29 views

How can I change the projection used by the QGIS Browser preview?

QGIS Browser has no settings in the UI. Is there any file or so where I can define this?
3
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1answer
99 views

Disparity between QGIS and ArcGIS for Desktop georeference results?

I am georeferencing a static map in JPEG format. I would prefer to use QGIS for a variety of reasons. I've never georeferenced with QGIS before, so I may not have the process quite right. I ...
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1answer
156 views

Filling fields with conditional clauses

I have four fields in my shapefile. I would like to fill only one of them (cell of attribute table) and automatically after to write one cell the others one will be filled by conditional clause. I ...
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0answers
36 views

Georeferencing two images at the same time in QGIS

Has anyone ever tried to georeference two images at the same time on QGIS? In my application I don't atually care much about the positioning itself, but in the scale and orientation. Why? I have ...
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0answers
39 views

Is it possible to render several DEMs simulatneously with QGIS2threejs?

I'd like to know if anyone knows a way of including several DEMs in one representation using QGIS2threejs. If I have two separate DEMs, each representing one modeled surface, both from the same ...
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1answer
55 views

Setting draw order of labels in QGIS

We're having an issue trying to display labels UNDER a heatmap-styled layer, and can't figure out why they are always defaulting to the topmost position on the map. We're using the 'heat map' style ...
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0answers
25 views

QGIS 2.10 for OS X dos not start on OS X 10.9.5

I have installed QGIS 2.10.1-1 from Kyngchaos.com following the provided instructions and installation requirements. The install process of GDAL Complete 1.11, Matplotlib and QGIS (in this order) was ...
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3answers
262 views

Change language from Swedish to English QGIS pisa

Can I change language from Swedish to English in my QGIS Pisa? I don't remember even choosing languages when I installed it.
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0answers
31 views

Plugin error: Photo2shape QGIS Pisa [duplicate]

I am trying to install the plugin Photo2Shape to my QGIS Pisa with no success. Does anyone know how to fix error: No module name exifread. ? What I need to do essentially is to add geotagged ...
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0answers
64 views

Finding start and end junctions of road from coordinate on road

I have a list of co-ordinates where traffic counts were carried out. I wish to associate these traffic counts to the link they are selected with. For that link I want to know the location of its two ...
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0answers
54 views

Distance Analysis from single point to multiple points on vector layers

Is it possible to do the following in QGIS: Create a text file that plots the distance from a single point (stored in one layer) and multiple points (stored in another layer). I have tried to use ...
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0answers
38 views

Easy Custom Labelling and CRS Issues

I'm having several issues with a vector layer in a project I have been working on for the last week. None of the overall settings have been changed but it appears that there is an issue with the CRS ...
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0answers
28 views

qgis legend with calculated field symbol

I am making a map with a bunch of features plotted on it, each with a two-letter combination used as the symbol and a color. The letters are unique for each feature, drawn from a column containing the ...
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0answers
71 views

Error trying to save vectorfile in QGIS 2.10?

I'm trying to save some changes I made in a vector file (polygons) in QGIS 2.10. The file contains properties and I want to merge two of them into one. I toggled and selected the two and then pressed ...
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2answers
146 views

QGIS Web Client - postgreSQL Layers wouldn't shown

since updating my QGIS to version 2.8.3 the postgreSQL Layers wouldn't shown in the QGIS web client. In the Desktop version the project works very well I only can see the projecttitle and the groups ...
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67 views

Trimming downloaded Worldclim Climate Projection Layers to specific area in QGIS for use in Maxent Program?

I am very new to QGIS and modeling. I have downloaded many Future Climate prediction files(GeoTiff) from Worldclim. I only need to use a small portion of the globe, but they do not allow for the ...
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1answer
67 views

QGIS Georeferencer - Georeferenced Image Issue

I'm trying to georeference an aerial image of a site over it's exact coordinates using WGS 84. The same coordinate reference system is used on the settings. I'm not sure what to do from here, is there ...
2
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1answer
62 views

Importing shapefile into GRASS, and multiple new rows appear in attribute table

I am importing a GADM Global Administrative Areas shapefile into GRASS (using QGIS 2.8.2 interface). When I do this, multiple additional rows are created in the attribute table. It goes from this: ...
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0answers
24 views

KML to SHP without losing attributes (on a Mac)

I'm wondering what the best way to convert a KML to SHP file is without losing attributes on a Mac. I would prefer to not have to learn Python or pay for software. Thanks! Josh
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0answers
32 views

classFactory error when using QGIS Plugin Reloader

I am developing a QGIS plugin that loads perfectly fine when I open QGIS. I installed the "plugin reloader" plugin to facilitate development. However, when I reload the plugin via the reloader I get ...
2
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1answer
44 views

How to update a DATE field when moving PostGIS geometry in QGIS?

I've been correcting our address point file using various methods to identify points that need to be corrected, with the final step being a manual move the point (or by the Numerical Vertex Edit) to ...
2
votes
1answer
240 views

Error memory on Viewshed Analysis plugin QGIS [duplicate]

My question is exactly the same as TTome! (Viewshed analysis plugin on QGIS keeps resulting in errors) "I've been trying to test the Viewshed analysis plugin on QGIS 2.10, but it keeps giving back ...
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2answers
729 views

Are there any geology fill pattern libraries for QGIS?

I'm making a geologic map using QGIS but I don't know how to draw a limestone lithology in QGIS. To draw other lithologies I combine lines and dots in the best possible way but is very limited. Any ...
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1answer
87 views

Applying OSM z-order after osm2pgsql with qgis

I've trying to find a solution to applying the OSM z-order in qgis after using osm2pgsql. Everything is working perfectly, until I add the each layer to the canvas, where the z-order is not being ...
2
votes
1answer
72 views

CSV to Layer from a Delimited Text File in QGIS

enter image description hereI am importing a CSV file into QGIS using the official instructions on their page: http://www.qgistutorials.com/en/docs/importing_spreadsheets_csv.html. For some reason, ...
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0answers
37 views

QGIS : strange tiedpoints after makeGraph

I try to use the Dijkstra shortest length path calculation. On the following program, when I use the Network.shp file (found here : https://geospatialpython.googlecode.com/svn/network.zip) with ...
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2answers
30 views

QGIS: Class boundaries

I have seen that people already had issues about overlapping class boundaries with the classification of graduated vector data. I am wondering if there is somewhere written in the documentation if ...
3
votes
1answer
58 views

How to process raster maps to get the same number of rows and columns?

For modeling purposes, I need to use two raster maps that contain exactly the same number of rows and columns. How should I process my maps to obtain this result? For now, my maps don't have the same ...
3
votes
3answers
98 views

Moving labels manually using expression in QGIS?

I have many point shapefiles that are too close together. I need to label 4 lines of data for each point. I have written the expression that shows the 4 lines of data and now the labels are ...
2
votes
1answer
72 views

OpenStreetMap heavily pixellated when loaded in QGIS and standalone application

I am loading an OSM street map into an application I am building. I load it as a raster layer via an XML document with the OSM GDAL data. My problem is that the map appears heavily mangled and ...
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2answers
92 views

Adding a csv layer in PyQGIS

I am trying to load a series of csv files as vectors in PyQGIS. I run this code to try to get the first one: uri='file://D:/Saved Stuff/gulags/1.40.csv?delimiter=;&yField=y&xField=x' layer = ...
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0answers
36 views

Struggling to install QGIS from source in RHEL 6.4 [closed]

I have installed QGIS from source in Ubuntu using the this link. In ubuntu I compiled qgis from source without any problem. but now I moved to RHEL 6.4, not able to run QGIS from source. The steps I ...
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0answers
40 views

For preparing watershed delineation with QGIS Grass module I couldn't find r.watershed module

For preparing watershed delineation here some one has described some steps as follows After step 2, I want to get flow accumulation file, but I can not find this kind of module in GRASS, so I pass ...
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1answer
60 views

Reprojecting Points, Shapes and Rasters using QGIS?

I have a project file that had originally started out with no care to the actual coordinates (we were just using an aerial and displaying the shapes and points on said aerial). Now, I am trying to ...
2
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1answer
85 views

How to remove a node in QGIS

I want to remove some nodes from a shape file using QGIS 2.10.1 I enable editing I click on the Node Tool I click on a node I want to select (it turns blue) However, once I select this node I am ...
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2answers
109 views

How do I save my map on QGIS as a shapefile?

The project for my class involves downloading a zip (with sharefile documents) + csv file which provide the data and a basic map of Manhattan. As per instructions, I computed a new field and created a ...
2
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2answers
89 views

Compute raster math in QGIS plugin

I'm writing a QGIS plugin and I need to create a raster layer as the average of other rasters. How can I do it? I have tried to use gdal_calc.py through os.system, something like: cmd = 'gdal_calc.py ...