Version 2.0 of QGIS (previously Quantum GIS)

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2
votes
2answers
35 views

Open local Raster Tiles in QGIS

I have a local directory with a Raster Tile, downloaded with SAS Planet (I know about the license issues, its just a personal test). In Global Mapper I can load it directly from the directory using: ...
5
votes
1answer
83 views

How does one style the border to match the fill in QGIS?

In the past I have just manually matched the color of the border to the color of the fill, but this can be time consuming. I am wondering, is there any way to have the program automatically match ...
2
votes
0answers
47 views

Problem using processing.runandload() [on hold]

I'm writing a QGIS plugin using PyQGIS and I have a weird problem. When executing following line of code: processing.runandload("qgis:createpointsalonglines", r"Clipped", 1, 1, 0, r"memory:nodes") ...
1
vote
0answers
15 views

How much a Vector Grid is intersected by another polygon layer

I am a new user so forgive in case of mistakes. I have a grid 5X5 sqkm and another vector layer with 2 different land cover type (let's say "forest"/"no forest"). I wish all the squares composing the ...
1
vote
0answers
30 views

QGIS 2.14 - Saving Lat/Long csv file to ESRI Shapefile Error [duplicate]

I have a csv file that I bring into QGIS 2.14 with standard lat and long formatting. The file displays fine but when I try to save it as an ESRI shapefile I get an error: Export to vector file ...
3
votes
3answers
33 views

Convert .csv with polygon geometry to .shp QGIS

Working on a Mac in QGI 2.12, I have a csv file with polygon geometry coordinates that I would like to save to a shapefile. It displays fine as a csv. However, when I try to use "save as," I get the ...
1
vote
0answers
82 views

Getting Started With QGIS? [duplicate]

I am a fairly strong user of ArcGIS, having started with version 8 long ago. But I'm looking for an inexpensive alternative right now for a client, and I want to investigate QGIS as a possible ...
0
votes
1answer
17 views

Getting the DB name of the spatialite table loaded inside QGIS using PyQGIS

I have a table loaded in QGIS from spatialite DB. When i see the layer properties it is dbname='/home/farook/Spatialite/Cities.sqlite' table="cities" sql=. Now i want the dbname alone (i.e) the entire ...
4
votes
1answer
47 views

Connecting to a spatialite DB, querying, writing the queried result to a spatialite table using PyQGIS

I am developing a plugin that connects to a spatialite DB , do some queries and outputs the results to a spatialite table. I had tried with the below code to connect to the DB and print the queried ...
0
votes
0answers
30 views

Debugging QGIS plugins using Eclipse IDE in Ubuntu?

I am using QGIS 2.14.1 in Ubuntu 15.04. I am developing QGIS plugin using Eclipse 3.8 IDE installed. I would like to configure pyqgis and debug the code using eclipse. Is there any documentation for ...
1
vote
0answers
24 views

Error while creating plugin using plugin builder in Ubuntu 15.04

I am building a QGIS plugin using qgis plugin builder 2.10.1. I am using Ubuntu 15.04. I had selected (/usr/share/qgis/python/plugins) path for the plugin to store in plugin builder, Its raising an ...
1
vote
0answers
16 views

pyqgis change or update attribute data with real-time data or Timer update,Memory has been growing

I update my shapefile attribute data by QTimer ,and labling it, keep the lable visiable,change attribute by 1 minute, but the Memory has been growing 1 layers ...
1
vote
0answers
40 views

How to clip many lines with polygon?

I have two vector layers: "parallel": a vector layer containing a lot of lines, they're all parallel but that shouldnt matter "polygon": a vector layer with just 1 polygon I want to create a new ...
6
votes
1answer
96 views

Following tests fails while trying to build QGIS from source

I have been trying to compile QGIS for a long time now. What I did is: Download Visual Studio 2010, Windows 7 SDK, cygwin, osgeow4 (I followed the instruction lines 380 - 447) Additionally I have ...
2
votes
0answers
70 views

Plugins incorrectly being disabled due to “causing QGIS crash”

I have QGIS 2.14.0 installed on my machine (W7 x64, AMD FX-8150 3.6GHz, 8GB RAM, SSD) and I'm having issues with plugins not opening by default when I open QGIS. The message I get (for each plugin ...
0
votes
0answers
11 views

QGIS and mysql administration - How to update a multiple select values

I have a mysql DB with spatial information. I would like to admin this DB from QGIS. I have the following situation: TABLE_A id | title | point 1 | item1 | point(x1,y1) 2 | ...
1
vote
0answers
29 views

QGIS 2.x - no repository and WMS access

Suddenly in my QGIS 2.x installations the official QGIS repository is unavailable from my computer. Also I can't load any WMS (from OpenLayers plugin etc.). It worked before and I don't know what I ...
4
votes
1answer
49 views

Load WMS with PyQGIS

I have installed QGIS server on Ubuntu 14.04 which serves WMS. Connection uses https and basic auth. URL is https://my.awesome.url:8090/cgi-bin/project1/qgis_mapserv.fcgi I can connect with QGIS and ...
0
votes
0answers
21 views

Fetching the table data from SQlite db in QGIS throws an error

I have exam.sqlite db and it contains 4 tables as t1,t2,t3,t4. from pyspatialite import dbapi2 as db sqlite_file = r'D:\Folder\exam.sqlite' conn = db.connect(sqlite_file) ...
2
votes
0answers
54 views

How to rotate symbols in QGIS

I have a vector symbol that I am using rule based style with. In the Rule properties tab I click on the SVG marker and change the "rotation" which is a field I have made to handle to the rotation ...
3
votes
1answer
52 views

QGIS's Select Features tools only work occasionally

I'm hoping someone can help me work out whether there's something I'm missing here or whether QGIS's Select Features tools are just really buggy. I have a variety of polygon layers from shapefiles ...
4
votes
1answer
109 views

How to split a polygon into multiples sections in QGIS?

I am working on QGIS latest version 2.12.3. I am digitizing a polygon. It represents a riparian buffer of a river. The polygon made a continuous « loop » with a widht of 50 meters. I want to split my ...
2
votes
0answers
24 views

QGIS 2.12 Edit rendering styles for outputs not listing all outputs

I have built a model in QGIS 2.12 and have been using the Edit rendering styles for outputs to set the styles for the models output data. But I have come across an issue. When I am configuring a ...
2
votes
1answer
61 views

Get the same coordinates for points after downloading a .osm file

I downloaded a .kml file that contains bike stations which I know the coordinates (latitude and longitude). So I got a layer that contains points corresponding to the stations. Then I downloaded the ...
3
votes
0answers
58 views

Postgis sequence in QGIS not working

I have a Multipolygon-Layer stored in a Postgis-database. The primary key field 'gid' is SERIAL. When trying to add a new polygon in QGis (LYON 2.12.1 on OSX El Capitan), the attributes form shows me: ...
1
vote
0answers
25 views

Colliding labels for point features in QGIS

I have a layer (point features) containing various points of interest (POIs), some of them have the exact same location. I would like to map these POIs and add a label showing their names. However, ...
2
votes
1answer
76 views

Creating polygon regions with latitude and longitude values in qgis?

I've a set of places with their latitudes and longitudes, I've plotted them on QGIS but what I want is to create polygon from these points so that each point refers to a particular region around it. ...
3
votes
1answer
51 views

Convert 0's to NoData in QGIS Raster Calculator [duplicate]

What is the easiest way to convert cells with a value of 0 to NoData in QGIS Raster Calculator?
4
votes
1answer
81 views

QGIS Finding valves to turn off for water lines

I am wondering if there is a tool for QGIS that can do what I am about to describe. It might be in network analysis but I am not sure. I have used water gems but it does not do what I want it to do. ...
1
vote
3answers
106 views

Area units for output polygon in WGS 84 UTM Zone 32N using QGIS

I am calculating the area of my polygon and I have used WGS 84 UTM zone 32N to calculate the area (using geometry on the field calculator) of my polygon, and I obtained 745461 (without units). How ...
1
vote
1answer
20 views

Is there more than one option to change QGIS' temporary folder?

I have tried changing the TEMP folder of QGIS following this post,and although it wasnt required, I restarted the system after making the change, but still got no result (printscreen below). Is there ...
2
votes
1answer
78 views

QGIS processing toolbox: fieldcalculator - update only selected features is not possible

I am working on a model where I need some calculations on only some selected features. In the normal fieldcalculator you can check 'only update ... selected features'. When using the fieldcalculator ...
3
votes
1answer
73 views

Rotate symbols perpendicular to line angle (QGIS)

I have lines representing curving streams and want to angle symbols at various points on the streams so that they are perpendicular to the angle in their particular locations. What QGIS seems to do ...
4
votes
2answers
92 views

Easier calculation of a surface using QGIS

I'm looking for an easier way to calculate the surface on QGIS: My project CRS is in Lambert93. Currently, when I'm calculating a surface using QGIS, when the surface seems wrong, I always have to: ...
3
votes
2answers
86 views

Is it possible to style the QGIS Message Bar using QSS?

I'm developing a GUI theme for QGIS 2.12 using QSS (QSS is very similar to CSS, but for styling Qt widgets). This is new functionality introduced in 2.12 Pisa. So far, results have been encouraging! ...
4
votes
1answer
35 views

Trouble saving graduated color style in Spatialite db in QGIS

When I attempt to save a style with graduated colors for a vector layer in a Spatialite db, I receive the following error: Error looking for style. The query was logged I had success saving ...
1
vote
0answers
50 views

How can i set layer polygon in center in QGIS using python?

I am trying to set a fixed zoom level whenever I layer is shifting on different polygon. I have coordinates for all the polygons , I need each polygon to be on center with certain zoom level so that ...
1
vote
0answers
53 views

Label layout on python in QGIS

Now the only issue is that in image I am not getting the labels, I have on polygon. Please help in that too Please see above attached screenshots here I need labels – I have updated QGIS it's version ...
3
votes
0answers
42 views

Raster calculators in SAGA return incorrect results

Here's a sample of my dataset (one cell) with 28 different raster values, representing 28 individual Float32 rasters with identical parameters. 0.0000264434, 0.0049953502, 0.0007529828, ...
2
votes
1answer
116 views

Conditional statement in gdal_calc with result as float, not boolean

Many examples on gis.se that refer to gdal_calc give a boolean example. example 1 example 2 If I need to calculate a conditional statement on a float: If Raster_Value >= 1024, then 1024; else ...
7
votes
0answers
80 views

Perform QGIS modeler multiple raster calculations with data from external CSV

I need to perform multiple calculations on a set of rasters based on values in a CSV metadata file. I'm using the QGIS graphical modeler and can call a specific field in a CSV with the Table and ...
1
vote
0answers
40 views

netCDF import problem in QGIS (XY issue)

I working with a netCDF file related to precipitation over time in QGIS. When I import the file, QGIS reads the data indicating y-coordinate, instead of timestep, as the dynamic dimension to associate ...
1
vote
1answer
48 views

How to change and display the plugins icon in the menu in QGIS

I want to add multiple icons in the same file to display the plugins icons in the menu. def initGui(self): action = self.add_action( ':/plugins/Example/icons\icon1.png', ...
1
vote
2answers
60 views

Convert Points to Polygons in QGIS

Is it possible to convert Points into Polygons in QGIS 2.10 Pisa? I just want to create a 1x1m Polygon based on the centroid of each Point. I tried Vector > Geometry Tools > Voronoi Polygons but that ...
1
vote
1answer
53 views

Loading and rendering shapefile in PyQGIS?

I wanted to know how qgis reads shapefile. Like i have choose any shapefile from qgis dialog then what are the steps that qgis take to read and render this shapefile data. Wrather it reads full ...
0
votes
0answers
32 views

CMYK colors in QGIS [duplicate]

Is it possible to deal with CMYK colors in QGIS (or in a QGIS plugin) ? It would be a good thing to choose directly the colors in CMYK and generate PDF with CMYK colors for the publishing compagnies. ...
1
vote
1answer
40 views

QGIS points filter

I'd like to use the points filter tool in the QGIS processing toolbox to remove errant gps points from data i'm looking at. I've had limited success playing with it and I was hoping someone who is ...
1
vote
1answer
37 views

Editing values in attribute table column

I have an attribute table with 5,000 records in QGIS. From this I have selected a subsection of 200 records whose attributes I need to modify. In the column called 'NAME' I would like to replace the ...
0
votes
1answer
35 views

QgisMap renderer Design Methodology

I wanted to know what drawing methodology is used by qgis renderer like gdi,gdi++ or opengl. I have searched its documentation http://qgis.org/api/classQgsMapRendererJob.html ...
0
votes
1answer
23 views

Converting between CRS in degrees to meters in Qgis 2.10.1

I am trying to get the area of my region in in square meters. I am actually on WGS 84 EPSG:4326 and when I switch the CRS, I can only find WGS 84/UTM which returns the same answer. Is my answer ...