Alistair,
A standard bi-variate thematic mapping on the basis of regions plays with
patterns and colors. Create a first thematic map by using patterns (auto
spread none, select manually your patterns) then a second own for which you
select the colors and set "Apply color" in the options part of the
requester. You will get colored patterns.
Another is to start by a plain color thematic map, then with a second
variable using patterns, making sure that the backgound color of the
patterns is none, or transparent.
I would favor the second approach because colored lines in patterns may not
be very distinguishable from each other.
Jacques Paris
e-mail alternate
[EMAIL PROTECTED] [EMAIL PROTECTED]
paris PC Consult (mainly MapInfo app.)
www.total.net/~rparis/gisproducts.htm
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Alistair Hart
Sent: March 30, 2000 10:43 PM
To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
Subject: MI Bivariate thematic mapping
Has anyone done bivariate thematic mapping in MapInfo using two different
variables succesfully?
I would like to be able to map a dengue fever outbreak and fill property
polygons (regions) with a foreground colour for each mosquito species
detected and then change the fill of the same polygons so it varies
according to the number of breeding sites on the premise.
I have successfully managed each operation separately but am having
difficulty organising the thematic mapping so that both variables are
displayed.
I already have symbols on the map polygons to indicate other variables so
that why I would like to use the polygon fill to state on of the variables.
Please tell me there is an answer to this! -Maybe an .mbx that takes
thematic mapping a little further? aaaagggghh......
TIA
PS: "remember the insect repellent and 'avagoodweekend"
Alistair Hart
Dengue Action Response Team
Tropical Public Health Unit
Cairns, Australia
[EMAIL PROTECTED]
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