Thematic Mapping more than one variable

[John Sanderson]

Hello all, help please!

I'm trying to represent some school data. I am currently trying to map
the data thematically in Mapinfo using two variables, which are in
separate columns. The variables are:

1. the school pyramid (ie which high school the primary schools feed
into or which upper school the middle/lower schools feed into)
2. the type of school - primary/secondary or lower/middle/upper

I want to represent 1. with different colours and 2. with different
shapes.

Do you know if this is possible in Mapinfo, and if so how?

I'm no MapBasic whizz so nothing too technical please!

Thanks
John

[Mats Elfström]

Hi John!

Out of my hat, I have a couple of suggestions.
You are aware that a tab file can be added twice to a mapper window,
thus creating two layers?
Well, using that, I would add the school data twice to a mapper.
For the lower instance, type of shool, I woudl use unfilled symbols of
different shapes.
Then I would use colored dots to designate the school pyramid, sized
so that they do not obscure the shapes from the first layer.

The other idea depends somewhat on the kind of data you have. Let's
say that both fields are string type. Then I would try to add a
temporary field in the browser, and populate that with the
concatenated sum of the two fields. That would in theory produce a
number of relations, which then could be visualized with colored
symbols of your choice.

HTH Mats.E

[Driver, Greg 9434]

John,

Give this ago:

1. Create a individual thematic map based on one of your options and set
each individual style to a different shape but all with same colour.
This will set the symbol style.

2. Create a second individual thematic map based on the other option.
Click the Styles button which will bring up the Customise Individual
Styles dialog and enable the Colour option in the Apply section. This
means that the style will be ignored but the colour applied.

Hopefully, this should give you a thematic map with different symbols
and colours. You might need to test which order to do the thematic in -
school type as step 1, school pyramid as step 2 or vice versa and see
which one works best.

HTH

Greg Driver

System Administrator
Applications Support
ICT
NOT PROTECTIVELY MARKED

[John Sanderson]

Chaps - cheers for the advice. I had thought of concatenating the
variables (they are text) but didn't want to have a vast key. I'll
give the methods described above a go next week.

Cheers
John

On 13 Apr, 16:26, "Driver, Greg 9434"

> John- Hide quoted text -
>
> - Show quoted text -

[Rob Schneider - Aurchem Exploration]

Looks like you have a solution but don't forget you can also create an expression in the thematic dialogue (vs creating temp data) - just scroll to the bottom of the field dropdown.

HTH,
Rob

John Sanderson wrote:

.

  

[Caroline Hilton]

Greg, does this work on your PC? And on others?
It works fine on mine, but whenever I do this same thing on machines
in my training courses it doesn't work. It makes one thematic with
shapes and one with colours. it tends to colour the original point
then put a different shape over the top. Same settings as my own
machine which works fine.

I do this with numeric data and with colour / size more often, but
neither way seems to work on any of my clients machines.

cjeers
Caroline

[Greg Driver]

Hi Caroline,

Yep, it works for me and I've tried it on another PC and I get the
same results!

Not sure what the problem could be?

Greg.

[John Sanderson]

Just to add - I tried the technique Greg detailed and it worked fine.
The only gripe (MapInfo - are you listening!) is that I had to create
my own key in MS Word.

Perhaps functionality will find itself into the next version of MI -
obviously i'm not the only person who wants to do it!

Thanks again for all the help from the group.

On Apr 25, 9:23 am, Greg Driver <driver9...@surrey.pnn.police.uk>
wrote:

> > - Show quoted text -- Hide quoted text -

[Warren Vick, Europa Technologies Ltd.]

For a little fun, visit this site:

http://www.tatuagemdaboa.com.br/tatuagem.asp?seunome=MapInfo&nomeamigo=Pitne
y%20Bowes

As some might guess, you can change the two names featured in the "movie" by
altering the parameters above. Needless to say, this is usually the name of
a couple of guys for best effect. Enjoy!

Regards,
Warren Vick
Europa Technologies Ltd.
http://www.europa-tech.com

[Caroline Hilton]

Thanks Greg, interesting. I don't know what's going on then, but since
about 7.8 it hasn't worked on anyone else's machien when we've tried
it!

Caroline