The polygonize tag has no wiki summary.
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0answers
30 views
QGIS GDAL polygonize - how to set scale
I've got some old contour plots, paper copy only, that I'd like to be able to put into QGIS. I get as far as a successful polygonize into shp and it looks fine, but the scale is wrong. How might I ...
6
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4answers
85 views
Generate polygons from a set of intersecting lines
This is a simple and quite common question which has already been asked for different purposes (see this link and this too, for example), here, however, we are looking for not a software package but ...
1
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0answers
70 views
Line to Polygon via Polygonizer in QGIS
My question is in the same vein as this one.
I'm attempting to convert precipitation lines (Precipitación Media Anual) to a polygon for Mexico in QGIS using the Polygonizer plugin.
After running the ...
3
votes
0answers
74 views
Why doesn't Polygonizer copy the line ids to my polygonized shapefile?
I am trying to convert a line shapefile into a polygon shapefile using Polygonizer plugin, and when my new polygons are created all the cells in my id field are "Null", although I have clicked "copy ...
1
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1answer
125 views
Polygonize function doesn't overlay the shape file over the raster file
To convert the raster into a shapefile I use raster->conversion->polygonize but QGIS doesn't open the new layer overlayed the first (the raster) but reflected above it.
I read this question ...
0
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0answers
107 views
Does Polygonize in QGIS 1.8.0 work correctly?
Does anyone else have issues with the Polygonize function in QGIS 1.8.0.
When i use it is to extract details from larger raster images, through raster calculator, then polygonizing the resultant ...
2
votes
4answers
132 views
How can I create polygons of the area surrounded by roads / lines?
I'm currently trying to create polygons that represent the areas surrounded by roads. The roads are stored in PostGIS as points / lines so I have flexibility over what I can do with them.
I'm ...
2
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0answers
172 views
Polygonize problem [duplicate]
Possible Duplicate:
Polygonize function doesn’t overlay the shape file over the raster file
When using "Polygonize" in Quantum GIS, I'm getting a polygon shapefile output that is a mirror ...
2
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1answer
71 views
From Raster to Masked and Filtered Polygon Vector
I have a set of rasters (geologic risk) from which I want to extract zones with a specific color, clipping them with a polygon (administrative borders), outputting a shapefile.
I'm using QGis (and ...
1
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0answers
16 views
Raster to Vector seems not to work [duplicate]
Possible Duplicate:
Qgis polygonize problem - DLL load fail
When I'm trying to invoke the Polygonize Module in the Raster Tab I get the following error message (I did give bothe the source ...
1
vote
1answer
342 views
DLL load error with Gdal polygonize in QGIS 1.8 (windows 7) [duplicate]
Possible Duplicate:
Qgis polygonize problem - DLL load fail
[I had already posted this question, but was closed and redirected to a supposedly duplicate question. I'm re-posting since I ...
5
votes
1answer
390 views
Qgis polygonize problem - DLL load fail
I have a raster file and I want to perform the method "polygonize". Then the problem occurs, that is shown on the screenshot.
It doesn t have anything to do with the rasterfile format, I veryfied.
...
4
votes
1answer
138 views
How can I fix DLL loadfailed with Polygonize in QGIS 1.8? [duplicate]
Possible Duplicate:
Qgis polygonize problem - DLL load fail
I'm getting the following error message when I try to use the polygonize tool in QGIS 1.8 (windows 7):
Traceback (most recent ...
2
votes
1answer
206 views
polygonize and raster tools [closed]
ok simplest question i have asked i think. but im a running QGIS 1.7.4 and there are no other tools in the dropdown menu other than raster calculator. I have seen in a lot of online demos tools below ...
5
votes
3answers
360 views
Convert polyline with Left ID and Right ID to polygons with ID
I have a polyline shape file which contain Left Id and Right ID information and struggling in converting this polyline layer to polygon with ID via arcpy.
I am using ArcGIS(editor) license so feature ...
2
votes
1answer
1k views
How to convert lines to polygons using NetTopologySuite?
I am trying to convert lines to polygons using NetTopologySuite(a C# port of Java Topology Suite JTS). I ran the sample console code succesfully and it generated two polylines.
I then tried to run ...
