[Qgis-user] Simplify?

[Ramon Andiñach]

On 11/11/2011, at 20:40, "Chris Green" <chris.green at ibstv.co.uk> wrote:

> Hello
>  
> I am using QGIS 1.7 in a Windows 7 environment. Everything seems great except for the simplify function (Vector->Geometry Tools->Simplify Geometries)
>  
> I am trying to simplify an ESRI shape file which is around 95M. I have tried various tolerance settings, but although it looks like some simplification is taking place, actually the file is unchanged. So for example with tolerance setting of 1.0 I get an encouraging message that says:
>  
> ‘There were 3638321 vertices in original dataset which were reduced to 559351 vertices after simplification’
>  
> However after saving the changes to the layer, the dataset still looks identical to the un-simplified version and the file size remains unchanged at 95M. I have tried to simplify smaller shape files also, but with the same result.
>  
> Can someone tell me what I am I doing wrong?
>  

Hi Chris,
This is a guess...

I suppose your output file is different to your input file?

(otherwise windows will probably get confused)


-ramon.
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