Martin,

At least I found other people with my problem !. :-)
Just I can say you the issue is not related NZ position in the world because in my 
case, I am working with WGS84 and bounds for Argentina and I have the same problem.
I sent this issue to Mapinfo Technical support almost 2 years ago and I never have 
obteined any answer.
In my case is CRITICAL ! not solve this problem because I need to work with this 
coordinate system URGENTLY and I can't see any solution.
Also I worked with Gauss-Grugger system coordinate and it works perfectly.
Please if you find the solution I will appreciate a lot if you comment it me !. I will 
do the same.-

regards
alejandro



Martin Roundill <[EMAIL PROTECTED]>  :

> The issues that have been raised recently (refer MI-L Cosmetic Precision -
> Big problem) are ones that I am currently struggling with.
> 
> I use a mapbasic code routine to snap lines to point features.  The routine
> searches for a point feature, grabs it coordinates and updates the node of
> the line.  This all works fine but when I then update the original polyline
> record with the revised object MapInfo appears to randomly change the end
> point of the line.  I have even written a debug routine to check this - the
> routine alters the coordinate of a polyline, updates the record then queries
> the node on the updated polyline and 9 times out of 10 it is not the same.
> 
> I know that this is not due to projection accuracy issues as I have tested
> this exhaustively.  I know this is not due to my logic as again I have
> tested this (over and over and over!!!)
> 
> One of the weird things about this error is that each time I run exactly the
> same code on exactly the same data I get different results and if I run it
> long enough sometimes the polylines will correctly update.
> 
> The only thing I can think of is that 
>       a) it is a MapInfo bug 
>       b) it is related to the projection engine that deals with my region
> of the world (New Zealand)
> 
> Other developers must have had this problem before!  But I cannot find any
> references to this is the archives.
> 
> I have been developing in MapInfo/MapBasic for 7 years so I am confident I
> have covered all bases in terms of the problem being the logic of my code.
> 
> Anyone got any ideas?  
> 
>  
> 
> Martin Roundill
> GIS and WEB MANAGER, IM (Ext 8344)
> Providing effective coordinated and independent expertise, supporting all
> Council's operational and strategic information management requirements.


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