[R-sig-Geo] R function checking/transforming CRS layer R function

[Roger Bivand]

On Sun, 29 Jan 2017, dave wrote:

> If your original data is not in the desired projection, changing the CRS
> attributes will not do the transformation for you.  In the case of vector
> data, you will need to use spTransform().  For raster data, you might be
> able to use projectRaster() but I would recommend using gdalwarp().

For a properly referenced discussion, see for example "Maps, Coordinate 
Reference Systems and Visualising Geographic Data with mapmisc":

https://journal.r-project.org/archive/2016-1/brown.pdf

Roger

>
> I wrote a brief blog post about this question, here:
>
> https://geoanalytic.github.io/coordinate-reference-systems-in-r/
>

OK, but blog posts have the strength of appearing easy to read, but the 
weakness of being too easy to read ...

Roger

> Regards,
>
> David Currie, P.Eng
>
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>
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-- 
Roger Bivand
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