Thanks.

On 16 May 2013 21:24, Glen Wilson <[email protected]> wrote:

> I'm also leaning towards the cd:ngi imagery because of more generally
> consistant alignment. Whatever your preference, it's still a good idea to
> check the alignment with (good quality) GPS traces (if available).
>
> I have found having multiple sources available is useful for comparison
> (e.g. that lake runs empty during the dry season, that road construction is
> complete, or that amusement park used to be an airfield). Even though the
> imagery date isn't available.you can often find clues as to which source
> suits your purpose better.
>
> -- Glen
>
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