[mapserver-users] multiple layers in a class

[Fawcett, David (MPCA)]

No.  That is what classes are for.

What is your concern about using multiple classes?

From: Mukesh Subedee [mailto:msubedee at yahoo.com]
Sent: Wednesday, April 27, 2011 3:41 PM
To: Fawcett, David (MPCA); mapserver mailing list
Subject: Re: [mapserver-users] multiple layers in a class

Oops, my bad...I meant multiple styles within a class. Does that mean I cannot use different color scheme for symbolizing "SMALL PIG" and "BIG PIG" within a same class? Is there any way to categorize each PIG with different EXPRESSION and give different STYLE for each within a class?

Mukesh

________________________________
From: "Fawcett, David (MPCA)" <david.fawcett at state.mn.us>
To: Mukesh Subedee <msubedee at yahoo.com>; mapserver mailing list <mapserver-users at lists.osgeo.org>
Sent: Wednesday, April 27, 2011 12:35:44
Subject: RE: [mapserver-users] multiple layers in a class
Mukesh,

If you want to symbolize SMALL PIG and BIG PIG differently, you will need two classes.  A class is used to select features that match the (optional) class expression.

You can have multiple styles within a class, but they would be applied equally to all of the features in that class.  One example might be stacking symbols for a feature.

The docs don’t say that you can have multiple ‘layers’ within a class, but that you can have multiple ‘styles’ applied within a class.  http://mapserver.org/mapfile/style.html

In your description below, you are conceptually talking about having different classes within a layer, but just using different words.  Is there a reason that you have an aversion to using multiple classes?

You can group classes if there is a need for it.  http://mapserver.org/mapfile/class.html

David.

From: mapserver-users-bounces at lists.osgeo.org [mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of Mukesh Subedee
Sent: Wednesday, April 27, 2011 2:06 PM
To: mapserver mailing list
Subject: [mapserver-users] multiple layers in a class

Hi,

In the STYLE documentation, it is mentioned that it is possible to have multiple layers within a class. I could not find any example how it can be implemented. I was checking an example in http://lists.osgeo.org/pipermail/mapserver-users/2010-August/066303.html where "SMALL PIG" and "BIG PIG" are in two different classes. However I am wondering if it is possible to implement it within a same class but representing with different styles. It means representing two different "PIG" in a same class but with different coloring mechanisms.

Thanks,
Mukesh
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