Expression help

Jason Maestri sl57k at cc.usu.edu
Fri Feb 18 16:32:07 EST 2000


Hmm.. Why don't you try:
    CLASS
        NAME "0 - 9"
        EXPRESSION (([AGE2000] >= 0) && ([AGE2000] < 10))
        SYMBOL 0
        OUTLINECOLOR 0
        COLOR 50 255 50
    END

--Jason Maestri



RAldridge wrote:

> Hello list,
>
> I'm needing help writing expressions to classify forest stands by age.  My shapefile includes a data item named "AGE2000" which is a numeric item representing the age fo the stand.  How do I need to set up classes if I want to represent the data in 10-year age classes.  Values of "AGE2000" range from 0 to 74.  Right now I have:
>
> LAYER
>   NAME standage
>   TYPE polygon
>   STATUS off
>   DATA stand110
>   CLASSITEM "AGE2000"
>   CLASS
>     NAME "0 - 9"
>     EXPRESSION "???"
>     SYMBOL 0
>     OUTLINECOLOR 0
>     COLOR 50 255 50
>   END
>   CLASS
>     NAME "10 - 19"
>     EXPRESSION "???"




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