[Therion] cs suggestion: Outside bounds warning

[Andrew Atkinson]

Thought that might be the case, but always worth a quick question, some 
think I think are really difficult seem to get done very swiftly

thanks

Andrew

On 14/02/11 12:56, Martin Budaj wrote:
>>> Which led me to the thought, maybe therion should warn, but continue if
>>> it finds an co-ordinate outside the area covered by the cs selected?
>>
>> I'll second that.  A couple of years ago I was trying to work out why north
>> became south!  It was a cs out of range error due to a mistyped digit.
>
> It is not trivial for projected coordinate systems. It would be
> necassary to specify the range for each CS used. Valid ranges for some
> (not all) EPSG codes are listed at http://spatialreference.org/.
>
> Perhaps the realistic implementation would be to let the user specify
> valid range for any CS he defines (CS definition is not supported yet,
> but planned). Then if you want to be sure with your coordinates, just
> define custom CS by copying EPSG definition and add valid range from
> http://spatialreference.org/.
>
> Martin
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