Re: [Qgis-user] QGIS 2.6.1 Complex polygon not displayed properly

2015-01-29 Thread Nicolas Cadieux 
It's called trial and error! :) 
Nice to know you got it going. 
Nicolas Cadieux M.Sc. 
Le 2015-01-29 12:06, "simonc8 [via OSGeo.org]" 
 a écrit : 

Thanks - you've suggested a solution, although I'm not sure why it 
works.
I imported my original shape file into SAGA, exported it as a shape file from 
SAGA and when I read the SAGA export into QGIS it had all the right areas 
blank. Weird!








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Re: [Qgis-user] QGIS 2.6.1 Complex polygon not displayed properly

2015-01-29 Thread simonc8 
Thanks - you've suggested a solution, although I'm not sure why it works.

I imported my original shape file into SAGA, exported it as a shape file
from SAGA and when I read the SAGA export into QGIS it had all the right
areas blank. Weird!



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Re: [Qgis-user] QGIS 2.6.1 Complex polygon not displayed properly

2015-01-29 Thread Nicolas Cadieux 
Hi,

I would activate the Dxf2shp plugin and try importing using that tool. 
Dxf files and DWG are very complex and can cause problems. You could 
also export the file from SAGA to .shp if SAGA reads the .dxf  
properly.  You could also try exporting from Golden Software Didger 
using an other format like .tab, mid/mif
Keep us posted!

Nicolas

Le 2015-01-29 11:21, simonc8 [via OSGeo.org] a écrit :
> The polygon (there is only one polygon) was created in Golden Software 
> Didger from contours exported as a dxf file. I imported the shapefile 
> into QGIS using Add Vector Layer.
>
> The attached image shows how the list of coordinates plot in Excel - 
> it shows how the coordinates trace round the main shape then go round 
> each of the inliers (what I am calling lakes) in the opposite 
> direction always returning to the common point which is the most 
> southerly in the file.
>
> I am confused because QGIS is obviously recognising some of these 
> inliers as being outside the polygon (it puts no colour in them) but 
> others are not being recognised.
>
> Excel chart
>
> 
> If you reply to this email, your message will be added to the 
> discussion below:
> http://osgeo-org.1560.x6.nabble.com/QGIS-2-6-1-Complex-polygon-not-displayed-properly-tp5184481p5184487.html
>  
>
> To start a new topic under Quantum GIS - User, email 
> ml-node+s1560n4125267...@n6.nabble.com
> To unsubscribe from Quantum GIS - User, click here 
> .
> NAML 
> 
>  
>





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Re: [Qgis-user] QGIS 2.6.1 Complex polygon not displayed properly

2015-01-29 Thread simonc8 
The polygon (there is only one polygon) was created in Golden Software Didger
from contours exported as a dxf file. I imported the shapefile into QGIS
using Add Vector Layer.

The attached image shows how the list of coordinates plot in Excel - it
shows how the coordinates trace round the main shape then go round each of
the inliers (what I am calling lakes) in the opposite direction always
returning to the common point which is the most southerly in the file.

I am confused because QGIS is obviously recognising some of these inliers as
being outside the polygon (it puts no colour in them) but others are not
being recognised.

 



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Re: [Qgis-user] QGIS 2.6.1 Complex polygon not displayed properly

2015-01-29 Thread Nicolas Cadieux 
Hi, 
How are you importing or exporting the polygons? Are the files originally 
shapefile?  Are you using QGIS for the import/export or an other software? 
When you click on a lake, is it associated with a line in the database? If not, 
it could be more of an rendering issue rather then a import/export issue.  
Nicolas Cadieux M.Sc. 
Les Entreprises Archéotec inc.  
8548, rue Saint-Denis Montréal H2P 2H2 
Téléphone: 514.381.5112  Fax: 514.381.4995 
Le 2015-01-29 10:46, "simonc8 [via OSGeo.org]" 
 a écrit : 

I append two images of the same shape file which contains a single 
polygon with several "lakes". In SAGA it displays correctly with all 
the lakes as transparent but in QGIS the larger lakes contain the colour fill. 
Is there something I'm not doing correctly in QGIS, or is there an option for 
changing the way it imports a polygon?
Grateful for assistance.









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[Qgis-user] QGIS 2.6.1 Complex polygon not displayed properly

2015-01-29 Thread simonc8 
I append two images of the same shape file which contains a single polygon
with several "lakes". In SAGA it displays correctly with all the lakes as
transparent but in QGIS the larger lakes contain the colour fill. Is there
something I'm not doing correctly in QGIS, or is there an option for
changing the way it imports a polygon?

Grateful for assistance.


 

 



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