Re: MI-L : Speed processing issues

[Jaromir Svasta]

I discovered that editing multi-segment polygons (eg. with islands) takes  
sometimes several orders of magnitude more time than doing the same with  
single-segment polygon. For instance, doing a simple node move on a  
polygon with 200,000 nodes and 700 sub-polygons takes more than 2 minutes  
on a very powerful PC. I recommend to performg complex editing on mif  
files rather than directly in MapInfo (but it requires some programming).

--
Jaromir SVASTA
Hydrogeologist
Geological Survey of Slovak Republic
Mlynska dolina 1
917 04 Bratislava
Slovak Republic
Tel: +421 2 59375326
Fax: +421 2 54771940
On Mon, 20 Dec 2004 21:37:13 +0800, Data Directions  
<[EMAIL PROTECTED]> wrote:

I am doing erase, combine and disaggregate operations on 1.3 Gb files,  
and
needless to say, the processing times are ridiculous ... hours and hours  
..
ad infinitum!

I have implemented the idea of using the MapBasic window and choosing to
bypass transaction files by the process:
set table YourTableName fastedit on undo off
Aside from the impractical option of purchasing a Sun Sparc station,  
would
it help if I was to increase my RAM or even processor speed? I am  
currently
running on a 2.4 GHz Pentium 4 with 512 Mb RAM. Or should I maybe  
consider
doing these operations in another product that imports MID/MIF files?

Thanks again,
Bill

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