Dennis
While it is true that accuracy is very important for spatial
analysis, the problem is with clipping regions and the presentation of
objects. I can pretty easily tell if Chicago has been clipped
accurately.
The slowness of 5.5 however destroys its credibility. In presenting
crime mapping to a ley audience or to police who are interested in
adopting it, the ability to do live demos is crucial. Power Point
presentations mostly generate skepticism.
Additionally, the crime analysis capabilties of a mapping program
require interaction with the crime analyst. A crime analyst who must
wait 15 or 20 minutes for a map is no longer interacting with the
program.
Dick
>>> "Waardenburg, Dennis" <[EMAIL PROTECTED]> 10/21 2:10 PM
>>>
Mapinfo rewrote their object handling routines because the old
versions were
error-laden and crash-prone. The new routines are slower, but work
much,
much more reliably.
Upgrades do indeed mean that products improve, but speed is not the
only
measure of performance. I'll a take a correct answer that is slow to
arrive
at over a speedy wrong one anyday.
Dennis Waardenburg
GIS Specialist
The Environmental Company, Inc.
> -----Original Message-----
> From: Richard Block [SMTP:[EMAIL PROTECTED]]
> Sent: Thursday, October 21, 1999 1:11 PM
> To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
> Subject: Re: MI v5.5 Clip map annoyance
>
> Spencer
> I recently had a similar problem with 5.5. In which I had a clip
> region and 3000 point objects. The map took so long to draw that
I
> finally gave up. I was told by tech support that a change in the
way
> objects are handled result in a significant slowing of the program
and
> that MapInfo does not do speed benchmarks. Way back when I
adopted
> MapInfo for Dos, one of its greatest pluses was speed. 5.5 is an
> unfortunate retrogression.
> Dick
>
> Richard Block
> Department of Sociology
> Loyola University
> 6525 N. Sheridan Rd.
> Chicago IL 60626
>
> 773 508 3454
> FAX 773 508 7099
> [EMAIL PROTECTED]
>
>
> >>> "Spencer Chainey" <[EMAIL PROTECTED]> 10/18 8:53 AM >>>
> Dear MapInfo and List,
>
> I thought upgrades meant that products improve?!!
>
> I've recently upgraded from 5.0 to 5.5 and need to clip a map that
> contains
> some vector street data and a thematic grid. It must now take
> approx. 10
> times longer (and before it wasn't that quick) for the map window
to
> redraw.
>
> Is there anyway that this can be speeded up?
> Can I modify something to quicken this process?
> Have MapInfo corrected this problem already and if not why not and
> when are
> they going to speed things up?
>
> Regards in annoyance!,
> Spencer Chainey
> Corporate GIS Manager
> London Borough of Hackney
> [EMAIL PROTECTED]
>
>
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Richard Block
Department of Sociology
Loyola University
6525 N. Sheridan Rd.
Chicago IL 60626
773 508 3454
FAX 773 508 7099
[EMAIL PROTECTED]
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