[Qgis-user] best practice for reducing size of spatial objects

[Surya Pratap]

What is the projection you are using?
Simplify works with the native projection of the file so if the 
projection is in decimal degrees then the tolerance too will need to be 
given in decimal degrees.

On 05-Dec-15 01:57, Ken Walenga wrote:
> What is the best way to reduce the number of points a spatial object 
> contains, thereby reducting its size and footprint at run time when 
> displaying the object? The problem I am running into is that we start 
> with a set of zipcode objects for the US and map/merge our custom 
> territories with it, ending up with somewhere between 10 - 150 custom 
> territories. We are using Qlikview to render the custom spatial 
> objects, and if we try to simultaneously display too many objects (ca. 
> 3 - 30, depending on the total # of custom objects the zip data set is 
> reduced to), the client program will crash. It seems that the custom 
> spatial objects are too dense. I'm wondering how to change the 
> "sampling" level from say, 1 geo-point every 3 feet to 1 geo-point 
> every 50 or 100 feet. I thought "simplify" ought to do that but maybe 
> I'm not using it correctly or there is some configuration setting I'm 
> missing. Any help would be appreciated.
>
> ----
> Kenneth Walenga
> Commercial BI & Reporting
> Genentech, A Member of the Roche Group
> US CommOps - USMA Data Services
> "Every moment matters.  Making IT happen."
> (O) 650-467-6855
> (F) 650-467-2570
> (M) 650-438-4505
>
>
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