[postgis-devel] st_isvalid() does not return warning message

[Blake Crosby]

Maxime,

Thanks, perhaps I will upgrade!

So it looks like there is an issue with significant digits, in my view:

(-108.616666666667 54.2) != (-108.616666666664 54.1999999999825)

Cause it looks like its rounding up. and treating these two points as one.

Blake

Maxime van Noppen wrote:
> On 09/12/09 15:43, Blake Crosby wrote:
>> Any way I can figure out why this geometry isn't valid? Postgis version
>> 1.3:
> 
> This isn't goint to help much but in Postigs 1.4 there is a
> ST_IsValidReason function that does this.
> 
> http://postgis.refractions.net/documentation/manual-1.4/ST_IsValidReason.html
> 
> If it is possible for you to update this might be a solution.
> 
> I've got a 1.4 version so here's the result for you polygon :
> 
>          st_isvalidreason
> -----------------------------------
>  Self-intersection [-108.617 54.2]
>