Scaling vector data

Malcolm Williamson malcolm at
Thu Mar 13 10:14:01 EST 1997

Hi, Justin
>From a display point of view, GRASS, like most GIS packages, doesn't care 
about the scale of data, as long as it is in the same projection and 
datum. You can set your resolution to the raster map that you are 
interested in, and zoom in to any degree you want. Vectors are always 
displayed as one pixel wide in the X monitor. 

As a user, it is up to you to realize the difference in accuracy implied 
by the scale of different data layers. Hope that helps.
	-Malcolm Willliamson

 On Thu, 13 Mar 1997, 
Justin Hickey wrote:

> Hello all,
> We have a raster map and a vector map of the same area (i.e. we want to overlay
> the vector onto the raster). However, they are at different scales. The raster
> map is at a scale of 1:1000 while the vector map is at a scale of 1:2400. Since
> the raster map is an image, we do not want to lose any details of the image.
> Therefore, I was wondering if there was any way to scale the vector map to a
> 1:1000 scale.
> Any information would be great since there doesn't seem to be a vector command
> to do this.
> -- 
> Sincerely,
> Jazzman (a.k.a. Justin Hickey)  e-mail: jhickey at
> High Performance Computing Center
> National Electronics and Computer Technology Center (NECTEC)
> Bangkok, Thailand
> ==================================================================
> People who think they know everything are very irritating to those
> of us who do.  ---Anonymous
> Jazz and Trek Rule!!!
> ==================================================================

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