Beyond all that has been said on the subject, there is a fact that has
fascinated me for a long time. Symbology is the result of assigning objects
to specified classes, each one with its own symbol (a point symbol or a fill
pattern, does not matter). The results of this assignation are needed to
display the thematic map; they must exist somewhere, even if it is in a
temporary file. I have always wanted to find a way to de-store that data to
be able to assign it to a (new) column and save it permanently. I have used
the notion of "classification" in association with this request.
Apparently nothing new exists on the subject
Jacques PARIS
e-mail [EMAIL PROTECTED]
For MapInfo support, see the Paris PC Consult enr. site at
http://www.total.net/~rparis/gisproducts.htm
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of PERRY Chris
Sent: September 28, 2000 8:19 PM
To: 'Miguel Cereceda'
Cc: MapInfo-L (E-mail)
Subject: RE: MI-L MI: SUM: selection in thematic layers
Miguel,
I think this is not a limitation in MapInfo! As the symbology is set up when
you create the thematic map, ie. the symbols are based on some data in your
table, the way to change a symbol is change that data, which makes sense to
me. If you want to change the setup of the thematic map (eg. change all
points which have an attribute of "Airport" to a plane, then you must modify
the thematic settings. You can access this under the Map... menu item.
HTH,
Chris Perry
Corporate Systems CoOrdinator
Parks Victoria
Melbourne, Australia
Ph: 61 3 9816 6800
Fax: 61 3 9816 7222
[EMAIL PROTECTED]
-----Original Message-----
From: Miguel Cereceda [mailto:[EMAIL PROTECTED]]
Sent: Friday, 29 September 2000 12:55
To: MapInfo-L
Subject: MI-L MI: SUM: selectin in thematic layers
Thanks very much to Erin Rubio, Russell Mincher, Brendan Henry and Jason
Adam.
The consensus is that it is impossible to select elements of a thematic
layer, you must use instead the underlying original layer.
This means that you can�t work with the symbology you defined in a thematic
layer.
I would like to define symbology for a layer and work (select,...) with it,
but I must disable the visibility of the thematic layer and enable the
selectable option of the original layer for selecting and see the selection
in the map, which means I must use the original symbology of the layer for
work with it (and can' t use my symbology).
I think this is an important limitation of MapInfo (others GISes don�t
have it). (Are you there MapInfo Staff?, in ArcView you don�t have this
limitation!!).
Miguel Cereceda
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