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

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4
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1answer
162 views

How to include streaming media into an OpenGeo system to monitor live-tracked animals?

I am wondering how to include streaming media (video), or camera feeds, into an OpenGeo system to monitor live-tracked animals. I am currently doing so with different applications, but I want to do ...
1
vote
1answer
162 views

Does QGIS support vector Rubbersheeting? [duplicate]

The task is to rubbersheet two vector layers one with a projection like UTM WGS 84 Zone 45N
1
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0answers
43 views

Spatial adjustment for vector shp files in QGIS [duplicate]

How to do spatial adjustment for vector shp files in QGIS? I have a set of 4 cadastral maps of adjacent locations. I have converted them form DWG to DXF and then to vector shapefiles. They are not ...
1
vote
2answers
410 views

How to use a hillshade dataset in QGIS?

I received “Hillshade” data that I'm trying to use in QGIS. When I check the "Pseudocolor" option under "Color map", I get many colors, apparently corresponding to the terrain, though it doesn't ...
2
votes
1answer
138 views

How to symbolize points using line symbols of varying rotation and width?

I've been along a stretch of coast and recorded the orientation and thickness and locations of several igneous intrusions. I've managed to set up a project in QGIS with a point for each intrusion, ...
1
vote
3answers
360 views

Why does QGIS not detect the CSV/DBF column headers?

I am trying to import a csv or dbf into qGIS so I can perform a join on a shapefile. However, qGIS is not detecting the first row as header names. I know I've done similar joins before and there's ...
1
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1answer
80 views

How can I import ALOHA .pas plume file into QGIS?

I am trying to find a way to import ALOHA's plume model (.PAS) into QGIS? I have not been able to find anything showing how to accomplish this outside of using ESRI-based tools.
0
votes
1answer
118 views

Is it Possible to Convert a GRD File into an ASC File in QGIS?

Is it possible to convert in QGIS a GRD file (that was created in MapInfo) into an ASC file (that can be imported into SAGA)? Is it possible to "extract by mask" a section of a GRD file in an other ...
4
votes
1answer
183 views

How can I split a segment into two segments?

The problem is how to split segments or in other words how to insert new points into a polygon so that the segment where I created the new point is now two segments connected by said point. Every time ...
3
votes
1answer
140 views

Is there any way to have the legend text above the symbol and beside it, not just above?

Is there any way to have the legend text above the symbol and beside it, not just above? What i do at present is to cut the end of the text off and insert a label then group them, however i want to ...
4
votes
1answer
133 views

Where to report QGIS and QGIS-Plugin bugs?

I often find bugs in Qgis and its Plugins. I would like to ask about this on the internet but I do not seem to find the proper place to address this issue. Are there any instructions?
2
votes
2answers
98 views

Why does “save” overwrite the “capture point” function? [duplicate]

I am very new at using QGIS. I have the standard installation (no additional plug-ins). I have several polygons and each polygon is formed by a number of segments. What I am trying to do is to connect ...
3
votes
1answer
89 views

How to automatically create a map for each column of attribute table?

I have an atribute table with yearly data for 10 regions, is there a way how to automaticaly create a set of maps (one for each year) with fixed scale? I tried to search the web but perhaps I didnt ...
2
votes
1answer
348 views

generate height data from DTED maps

I have 16 DTED maps of (1 degree x 1 degree). I have to generate combined height matrix of maximum 4 (1 degree x 1 degree) DTED maps in my C++ application. Can someone suggest to me which open source ...
0
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0answers
43 views

Qgis on MacOS. Color picker does not show?

Style palette in my Qgis does not work. When choose Properties, Style on a Shape layer and click Change color only an empty dialog of 1 X 1 cm shows up. What do I do wrong? Mac OS 10.6.8, Qgis 1.8
1
vote
2answers
90 views

Preserving formatting of Scales & Legends in Templates

My QGIS templates don't seem to preserve the formatting of my scales or legends. Is there a way to save these so they don't have to be redone each time? (I'm doing a series of maps that will be the ...
2
votes
1answer
74 views

How to get WMS layer title instead of the layer name in QGIS?

When I connect to a WMS service in QGIS, the name displayed in the layers panel is the layer name. Can I configure QGIS to always display the layer title for WMS layers and fallback on the name if ...
13
votes
2answers
811 views

How can I merge/collapse nearby and parallel road lines (eg. a dual-carriageway) into one single line?

I have a shapefile from OSM which contains all the roads within a city. Larger roads (like dual-carriageways) seem to have 2 parallel lines. I'd like to collapse / combine those into 1 line so I can ...
2
votes
1answer
445 views

The “Add delimited text layer” button does not show (QGIS 1.8.0)

I want to create a point map layer on the basis of an CSV file with XY data, with the "Add Delimited Text Layer" button. However, this button does not show. Also, it is not possible to add an Excel ...
0
votes
1answer
279 views

How to fix AttributeError: 'QgsVectorLayer' object has no attribute 'provider'?

When I try to start this algorithm I get an error: Traceback (most recent call last): File "C:/Users/trdina/.qgis//python/plugins\sextante\core\GeoAlgorithm.py", line 145, in execute ...
0
votes
1answer
1k views

ecw on windows 7 qgis 1.8 [duplicate]

I used 1.7.4 qgis release on Windows 7, by which it was possible to manage ECWfiles; after passing to 1.8 release, I couldn't deal with an ECW file: it tells me that .ecw is not a supported kind of ...
2
votes
1answer
124 views

Can a Print Composer be “dynamic”?

Is it possible to create a Print Composer; then later, after altering the map that it is based on, go back to that print composer and have it show the altered map? In other words, I want to retain the ...
2
votes
2answers
512 views

Why are edits in shapefile table not saved?

I have created a shapefile (point data) and wish to change some parameters in the files table data. I can edit the data and see the coresponding change in my my symbology. However, when I save the ...
4
votes
1answer
139 views

QQIS composer: Using bold and normal text styling in a label at the same time?

I am writing text explanations for map symbols and need to write three lines for each symbol - basically explaining the same thing in three different languages. I'd like to bold the main language - ...
3
votes
1answer
152 views

Reclassification of environmental values

I've started to use Qgis recently. I have a logical question. I'm trying to reclassify a raster. The values in the raster are depths, obtained by an interpolation. The original depth values (of the ...
2
votes
1answer
57 views

QGIS QgsOgrProvider library

I asked a question here: http://stackoverflow.com/questions/14790463/qgis-copy-layer-in-c-plugin and I was suggested to find the library which provides QgsOgrProvider::createEmptyLayer() function. Can ...
1
vote
1answer
158 views

How to compile QGIS from source with custom pyspatialite 4.0.0?

I have turned WITH_PYSPATIALITE ON, but I have a custom build of SpatiaLite (4.0.0), not the packaged version, so I set WITH_INTERNAL_SPATIALITE to OFF. How do I tell QGIS to configure PYSPATIALITE ...
4
votes
2answers
803 views

Why don't some layers line up afer converting Mapinfo TAB to Shapefile?

I have 6 MapInfo layers / TAB files which I need to convert to ESRI ShapeFiles, preferably using QGIS. When a colleague opens these in MapInfo 10, they all look fine and line up correctly. When I open ...
2
votes
1answer
183 views

How to read the area column in QGIS?

I have few problems understanding how units are managed in QGIS. According to the area column I created for a shapefile, the area of a shape is 0.7727... I just checked on Wikipedia and indeed the ...
3
votes
1answer
220 views

Hydro-Enforced/surface constraint DEM Creation using GRASS/QGIS

I am wondering if there is a way to create a hydro-breakline enforced DEM by means of any open source solution? I am able to create a DEM from Lidar data using GRASS, but would like to enforce some ...
8
votes
2answers
340 views

How to link dataframes in ArcGIS or QGIS?

The below image shows a layout in ArcGIS 10.1 with four dataframes. Each dataframe is of the same geographic area, although they are different images. For example, the top left image is a 1989 DOQ, ...
2
votes
1answer
474 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
301 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
55 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
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0answers
98 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
65 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
71 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
155 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
659 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
307 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
87 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
88 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
124 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
213 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
191 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
86 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
605 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
342 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
366 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