Maestro Expression Editor Syntax

[Tysonk]

Hello,

I'm trying to compare String expressions in Maestro's Expression Editor to style a layer in a certain way. I have a attribute "Postedname" for the streets in my map. Now I want to style the streets with a certain name, in a different way. For, example I want all the streets with the name "Third Street" to be in a thicker line than the rest.

My problem is that I'm not sure of the exact syntax to do this. I've tried things such as:

Postedname="Third Street"
Postedname Equals "Third Street"
Postedname.equals("Third Street")=1
Postedname.compareto("Third Street")=1

....But to no avail. I was wondering if someone could help me out with explaining the correct way to compare/evaluate two Strings in Maestro's Expression Editor.

Thanks!

[Traian Stanev]

Try:

Postedname='Third Street'


Single quotes for strings. Double quotes makes it think that it is a column name.


Traian

> -----Original Message-----
> From: [hidden email] [mailto:mapguide-internals-
> [hidden email]] On Behalf Of Tysonk
> Sent: Tuesday, August 25, 2009 10:48 AM
> To: [hidden email]
> Subject: [mapguide-internals] Maestro Expression Editor Syntax
>
>
> Hello,
>
> I'm trying to compare String expressions in Maestro's Expression Editor to
> style a layer in a certain way. I have a attribute "Postedname" for the
> streets in my map. Now I want to style the streets with a certain name, in a
> different way. For, example I want all the streets with the name "Third
> Street" to be in a thicker line than the rest.
>
> My problem is that I'm not sure of the exact syntax to do this. I've tried
> things such as:
>
> Postedname="Third Street"
> Postedname Equals "Third Street"
> Postedname.equals("Third Street")=1
> Postedname.compareto("Third Street")=1
>
> ....But to no avail. I was wondering if someone could help me out with
> explaining the correct way to compare/evaluate two Strings in Maestro's
> Expression Editor.
>
> Thanks!
> --
> View this message in context: http://n2.nabble.com/Maestro-Expression-
> Editor-Syntax-tp3510365p3510365.html
> Sent from the MapGuide Internals mailing list archive at Nabble.com.
> _______________________________________________
> mapguide-internals mailing list
> [hidden email]
> http://lists.osgeo.org/mailman/listinfo/mapguide-internals

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[Tysonk]

Thanks Traian, that worked perfectly!


I was trying tirelessly to get this working yesterday, and I could have sworn I tried single quotes as well, but I guess not.

Thanks again!

Traian Stanev wrote:

Try:

Postedname='Third Street'


Single quotes for strings. Double quotes makes it think that it is a column name.


Traian


> -----Original Message-----
> From: [e-mail] [mailto:mapguide-internals-
> [e-mail]] On Behalf Of Tysonk
> Sent: Tuesday, August 25, 2009 10:48 AM
> To: [e-mail]
> Subject: [mapguide-internals] Maestro Expression Editor Syntax
>
>
> Hello,
>
> I'm trying to compare String expressions in Maestro's Expression Editor to
> style a layer in a certain way. I have a attribute "Postedname" for the
> streets in my map. Now I want to style the streets with a certain name, in a
> different way. For, example I want all the streets with the name "Third
> Street" to be in a thicker line than the rest.
>
> My problem is that I'm not sure of the exact syntax to do this. I've tried
> things such as:
>
> Postedname="Third Street"
> Postedname Equals "Third Street"
> Postedname.equals("Third Street")=1
> Postedname.compareto("Third Street")=1
>
> ....But to no avail. I was wondering if someone could help me out with
> explaining the correct way to compare/evaluate two Strings in Maestro's
> Expression Editor.
>
> Thanks!
> --
> View this message in context: http://n2.nabble.com/Maestro-Expression-
> Editor-Syntax-tp3510365p3510365.html
> Sent from the MapGuide Internals mailing list archive at Nabble.com.
> _______________________________________________
> mapguide-internals mailing list
> [e-mail]
> http://lists.osgeo.org/mailman/listinfo/mapguide-internals
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