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

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2
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1answer
645 views

QGIS “Coordinate capture” plugin - how to turn it on?

I have enabled the Coordinate Capture plugin via the Plugins menu. But I cannot seem to "turn on" or activate the plugin and get it running. How do I do that?
2
votes
1answer
414 views

Is it possible to convert data from WGS84 to Bessel1841?

When we convert data from bessel1841 to WGS84, parameter setting must be used because it is impossible automatic convert on QGIS. Reference: Converting shp file from bessel1841 to WGS84 Is it ...
0
votes
1answer
56 views

Is it possible to download GPX another coordinate system except WGS(GCS) with GPS Tool on QGIS1.8.0?

I got GPS data with using bessel1841 as coordinate system. When I download GPX data on GPS tool, it is automatically treated as WGS84. Can I use another coordinate system when I download GPX on GPS ...
2
votes
0answers
112 views

Rendering a QGIS WMS layer in Firefox hogs the machine

I am less than a novice beginner on GIS Systems and am groping for answers. I followed instructions for WIN 7 Install at both ...
3
votes
1answer
1k views

How to install SciPy for QGIS Standalone [closed]

A number of QGIS plugins require the Python package SciPy to be installed. This package is available using the OSGeo4W package based installer or precompiled for Windows, but is not provided as part ...
1
vote
1answer
76 views

New Install Quantum GIS - .ind and .idm files not valid [closed]

I downloaded and installed the Windows version of Quantum GIS to view Pinellas County data. I can add the .shp, .shx, and .dbf layers, however do not see any data showing as far as road names, etc. I ...
1
vote
2answers
76 views

How to inspect consistency with two polygon which have to be the same position on QGIS1.8.0

There are two polygons which have the common line and point in some parts. These line and point should be the same position. I want to know how to inspect these condition on QGIS1.8.0. Thank you in ...
1
vote
1answer
236 views

How to set tolerance value of Geoprocessing tool in QGIS?

Is it possible to set tolerance value of geoprocessing tool on QGIS. History is below. There are two polygon which have to be the same position. so, I set topological rule "A must covered by B" on ...
2
votes
1answer
1k views

How to delete row from attribute table on QGIS1.8.0

Is it possible to delete row from attribute table!? I can delete from selecting feature. I encountered invisible polygon. I could not select feature. Thus, I would like to know how to delete from ...
0
votes
2answers
451 views

How do you use 'reclass' in GRASS?

It could be user error, but for some reason, the reclass tool is just hanging and hanging... QGIS 1.8 Compiled against GDAL/OGR 1.9.2 Ubuntu 12.04.1 Running the tool from the Sextante toolbox Input ...
1
vote
1answer
97 views

Sextante (SAGA) “Normalisation” problem

I don't understand the SAGA-module "NORMALISATION". In SAGA Gis I just can define one MIN and one MAX value. In QGis I have to define 2 of both. How to handle that exactly?
-3
votes
1answer
94 views

Where to find QGIS API documentation?

Where to find QGIS API documentation? Can someone please share a QGIS API documentation link, i couldn't find it anywhere on the site. please help thanks
1
vote
1answer
153 views

Export GPS file in Lambert 93 for Illustrator manipulation

In Illustrator, i use some french IGN maps (1/50 000 scale) Lambert 93. I want to put on some GPX files to the right position for sure. I use QGIS to import the GPX file, i modify the reference to ...
5
votes
1answer
293 views

Help with grid creation in QGIS

I have 235 raster tile 20km x 20km. I need to create a grid to overlay across them...ie the grid itself will be 20km x 20km, with the lines of the grid on the boundaries of the tiles. I am assuming ...
1
vote
1answer
265 views

Projecting shp from GK3 to UTM32 with BeTa2007

I've experimented with projections of shapes, used the official provided grid beta2007 for germany and noticed differences between transforming by double exporting over custom CRS in QGIS and ...
2
votes
1answer
97 views

Why aren't all Shapefile vector features displayed correctly?

I am a new user of QGIS 1.8.0. I do not display correctly SHP layer. When I want zooming layer so that half of the layer is outside the map window - display layer disappears. In the settings I can not ...
3
votes
1answer
781 views

Does anyone have a shapely install for python “dummies” guide?

I have read both questions in regard to installing shapely on a Mac (OS Mountain Lion) and haven't been able to figure it out. I'm not familiar with python syntax and am just trying to get shapely ...
3
votes
1answer
608 views

Calculate Point Angle in QGIS

I was wondering if there is a plugin, or a field calculation in QGIS to calculate a points rotation angle. ETGeoWizards has a tool that allows you to calculate a point layer rotation angle from a ...
2
votes
1answer
571 views

How to add ocean_basemap in QGIS ?

Has anyone added the Ocean Base map to QGIS? I was able to add the Open Layers plugin and get the "land" basemap (among others), but not the ocean. Thanks, Mike
11
votes
1answer
6k views

Merging adjacent polygons in shapefile that has been split at tile boundaries?

I'm currently using building data from the Ordnance Survey Vectormap District and I've noticed that a lot of building polygons are split in 2 because of the way the OS split up the shapefile. This is ...
1
vote
2answers
460 views

ESRI State Plane Coordinates as EPSG

I am working with some State Plane projections from Colorado. I have looked them up on spatialreference.org and they are the following: ESRI:102254: NAD 1983 HARN StatePlane Colorado Central FIPS ...
3
votes
4answers
180 views

Combining UK OS Historic Digimap Tiles

I'm assisting a retired user in combining a large number of raster tiles downloaded from Historic Digimap http://edina.ac.uk/digimap/description/historic_overview.shtml into one project in qgis. I'd ...
1
vote
1answer
150 views

How to reproject base layers in QGIS once open layers are removed?

I recently discovered the wonders of the osm maps. however now all my projects have all gone curved. is there a way to go back to how they were set originally. opposite to this question: How to ...
7
votes
2answers
494 views

How to create something similar to GDB in QGIS?

I used to work with ArcGIS. There I had geodatabases in which I could store several shapefiles with defined layer styles. Is there a way to do something similar with QGIS? The background is: we are ...
2
votes
0answers
250 views

Using QGIS with EPSG:404000

I'm using QGIS with a flat-world approximation dataset and for my specific use, geometric coordinates on a 1 unit = 1 metre scale are perfect. Unfortunately, QGIS doesn't have EPSG:404000 built-in, ...
2
votes
2answers
370 views

Looking for a QGIS Architecture Diagram

I would like to know the architecture of QGIS: relationships between QGIS and other open sources, and what elements are implemented in the QGIS. Usually, There is a diagram showing the architecture ...
4
votes
2answers
808 views

Splitting DXF layers into Shapfile layers in QGIS?

When i load a dxf into QGIS all the layers are present in the attribute table. Is it possible to split this "entities" layer in QGIS into its component parts and save each component part as an ...
4
votes
2answers
211 views

How to create a colormap where colors diverge at value 0 in QGIS?

I calculated a raster as difference of two other rasters. Now I want to create a colormap where one colour represents negative values and one colour positive ones. The two colours should become ...
2
votes
1answer
2k views

find polygon corner coordinates

I am trying to get the coordinates of each node of the polygon I create. I would like the attribute table to display the name of the polygon (ex. address) and then the coordinates of the nodes (ex. ...
1
vote
1answer
378 views

Desktop client symbolozing a WMS layer by sending SLD to the WMS server?

Objective is simple: finding 'desktop software' (such as ArcGIS, QGIS, etc) that can load a WMS layer, and then send its own SLD to apply to the WMS server in order to get the WMS layer back with the ...
1
vote
1answer
406 views

Problem connecting to localhost PostGIS

When I try to connect to a small localhost PostGIS database using QGIS, I get the error message: FATAL: no pg_hba.conf for host "fe80::4528:3236:418a9e7b%10" user "postgres", database "nyc", SSL off ...
0
votes
0answers
141 views

importing data (weighted average) from a shapefile from another shapefile

I am new to GIS and hope this is not too basic. I am using QGIS. Say I have two shapefiles: SHP1, with attributes allocated to municipalities, and another shapefile I built from a wkt file, SHP2, ...
0
votes
1answer
554 views

DXF created by QGIS crashes Autocad [duplicate]

This is slightly complicated. I have a dxf created by autocad which seems to have been corrupted. It will not open in AutoCAD. However, it opens in QGIS. I tried selecting the file in QGIS and ...
2
votes
2answers
3k views

Can I create a TIN from contours lines (shp) in QGIS?

I need to do a slope analysis, and would like to make a TIN from 2m contours lines. Or do a slope analysis directly from contours? The only DEM available is not precise enough. I do not have any ...
4
votes
1answer
345 views

QGIS - Add a combobox to a toolbar

Is there a way to add a combobox to a toolbar for QGIS? So far I can only find examples that add buttons. I found this tutorial which seems to explain how to do this with general PyQT but haven't had ...
0
votes
0answers
113 views

Toggle editing layers

I search one plugin that alows start an editing session aplied to some layers from postgis connection at the same time as we can in ArcGis?
0
votes
2answers
914 views

Digitizing from OpenLayers Plugin in QGIS, or create raster?

Is there an easy method for digitizing from a layer added from the OpenLayers pluggin. As i cannot snap to it or use it as raster so the entire map does not load? two separate issues there.
2
votes
1answer
3k views

How to get Shapefile point coordinates into .xls?

How can I get just Coordinates (in a file) from point features (shapes) without big hussle. Something like Shape to .xls, with distinct coordinates? I want to use this coordinates immediately, so GPX ...
1
vote
2answers
1k views

Adding .e00 data into QGIS

I wonder if anyone can advise me on how to go about adding .e00 data into my QGIS project. I'd be very grateful for any advice, or a hint on where to find it. Thanks TVZ
0
votes
0answers
65 views

Why can't I “Add label columns to attribute table” etc. in QGIS 1.9?

Why can't I "Add label columns to attribute table" and why can't I use "Letter spacing", "Word spacing" and so on? I have a shp-file. QGIS version 1.9
7
votes
4answers
2k views

Elevation profile 10 km each side of a line

How can I get an elevation profile for a band of terrain? The highest elevation within 10 km (on each side of the defined line) should be taken into account. I hope my question is clear. Thank you ...
0
votes
0answers
62 views

Points in polygon stops processing at 0% Any ideas how to fix it?

I downloaded QGIS yesterday. Today, I tried to do a "Points in polygon" analysis, and it stopped working. It was working earlier today when I did it a couple times. Now, when go to do one: I click ...
1
vote
0answers
49 views

Handling save event in QGIS

I have managed to load QgsVectorLayer from PostgreSQL and add it on the map. Is possible to trap save event after editing, do my own saving, call layer refresh and in this way prevent from default ...
8
votes
4answers
747 views

assign and move centroids to their polygons

I m using QGIS 1.8 Lisboa. After calculating the centroids from a polygon shapefile, if some of them lie outside the polygon outlines, I'd like to move them on the polygon they came from. The ...
3
votes
1answer
91 views

Legend title in print composer with different font styles

I want to design a layout with print composer where the legend Title has two different font styles in one e.g. " I had it once but can´t remember". I would be grateful for help.
1
vote
0answers
54 views

Add regular points to each polygon in QGIS [duplicate]

Possible Duplicate: assign and move centroids to their polygons I'm trying to find out a method to define a unique ID based on specific coordinates for each polygon of a shp. The problem is ...
1
vote
1answer
268 views

netCDF does not display properly in QGIS 1.8 [closed]

I have a netCDF file of fire emissions on a regular grid of 12 km by 12 km grid cells with 200 east-west grid cells by 161 north-south grid cells centered on the continental United States. The map ...
3
votes
0answers
312 views

How to import PostGIS layer with geography type to QGIS?

I tried to import in QGIS a layer from a PostgreSQL table with a geography type column created through the extension PostGIS. I noticed that QGIS doesn't seem to like the geography column... Here ...
3
votes
4answers
207 views

Place image without using points in QGIS

I am trying to find a GIS software that does this, so I am trying QGIS but other suggestions are welcome. I have a basic shp boundary such as a rectangle. I want to be able to import an unreferenced ...
2
votes
1answer
122 views

How to get a list of all projections that are currently available in QGIS via the PyQGIS-API

i'm building a QGIS-Plugin and i want the user to choose a CRS out of a combobox in which the coordinates he would enter into some textfields are represented, so these can be converted into another ...