Thanks, Jason.
That cleared the issue.
> From: Jason Adam <[EMAIL PROTECTED]>
> To: "'[EMAIL PROTECTED]'" <[EMAIL PROTECTED]>
> Cc: "'MapInfo List'" <[EMAIL PROTECTED]>
> Subject: RE: MI Pro Thematic Maps
> Date: Mon, 5 Jul 1999 10:00:27 -0400
> Alex-
> This is a little feature of MapInfo that always draws map objects by Rowid,
> not the thematic value. Even sorting and saving will not always work if you
> pack or add/change an object - they are all internally re-numbered.
> The best solution (which I use daily) is to query everything in the table
> with Sort By... [your intended thematic column] to a new table (call it
> PopAsc I guess. The default name is Query1 of course). Now Add that Query
> table to your layer structure and turn off the display of it and the
> original table that created it. Make your thematic on this new table, and
> it will redraw with the Highest values on top. For Varying circles, you may
> want the biggest on the botttom so you can still see the small ones. In
> that case just add desc (for descending) to the Sort By... [column] line in
> the query dialog.
> This technique simply redraws the map objects from the Top down (browser
> order), regardless of what kind of thematic you want.
> Newer MI versions (4.5-5.0) will save this query in the workspace so you
> don't have to re-do it everytime you want to look at your project.
> Good Luck-
> ______________________
> Jason Adam
> Computer Draftsperson
> Monopros Limited
> One William Morgan Drive
> Toronto, ON
> [EMAIL PROTECTED]
>
>
> > -----Original Message-----
> > From: Alex Eshed [SMTP:[EMAIL PROTECTED]]
> > Sent: Sunday, July 04, 1999 4:43 AM
> > To: [EMAIL PROTECTED]
> > Subject: MI Pro Thematic Maps
> >
> > Greetings, List.
> >
> > A point file (cities) has a numeric field (population). A thematic
> > map is produced with Point Ranges, with a setting of circles arranged
> > by size.
> >
> > Strangely (?) enough, there is no consistency as to how these circles
> > overlap. Some of the large circles overlap smaller ones, and some of
> > the large circles are overlapped by the small ones. I tried sorting
> > the file by population, saving it that way, recreating all the
> > graphics (after the sort) and using it as the base file for
> > thematics. Same result.
> >
> > One would expect that the drawing of symbols in a THEMATIC map would
> > be in the sequence of the values being "themed" and thus either the
> > largest symbols would be drawn first and the smaller ones would be
> > visible above it, or the largest symbols would be drawn last,
> > concealing all, or part, of the smaller symbols underneath it.
> >
> > Has anyone found a method to actually achieve the consistent effect
> > described above?
> >
> > TIA to all responders.
Best regards,
Alex Eshed
Digi-Tek Ltd.
12, Homa St., Rishon LeZion, 75655, Israel
Tel: +972-3-961-5840
Fax: +972-3-961-5877
mailto:[EMAIL PROTECTED]
http://www.dgtek.com
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