[MapServer-users] Issue with line colors in mapserver 8.4.0

[Seth G]

Hi Dierk,

Does your use case match the issue at https://github.com/MapServer/MapServer/issues/7167 ?
I think adding a new PROCESSING directive to MapServer could be used here to switch between the two different use cases.

Seth

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On Tue, Jan 13, 2026, at 9:29 AM, Linsenmaier, Dierk via MapServer-users wrote:
> Hello mapserver community,
>
> Since we switched from mapserver version 7.6.4 to version 8.4.0, I have 
> an issue with colors in line layers.
> All dynamic color definitions (color is defined by a variable) are 
> rendered with the same color. No matter if we use RGB- or HEX-Color 
> values.
> COLOR [VAR]
>
> The values for the color  variable are defined by  an oracle SQL querry.
>
>
> Example SQL:
> DATA                    "geom FROM (SELECT id,status,zeitraum,   case   
> when Zeitraum in ( 2023) then '166 206 227'  when Zeitraum in ( 2024) 
> then '31 120 180' when Zeitraum in ( 2025) then '227 26 28' when 
> Zeitraum in ( 2026) the
> n '255 127 0' when Zeitraum in ( 2027) then '253 191 111' when Zeitraum 
> in ( 2028,2029,2030) then '251 154 153' when Zeitraum in ( 
> 2031,2032,2033,2034,2035) then '51 160 44' when Zeitraum in ( 
> 2036,2037,2038,2039,2040) then '178 223 138'
> END  as color, geom,'Status: '||STATUS__LL||'</BR>Trassenlänge: 
> '||trassenlaenge||'m' AS banner FROM my_oracle_table WHERE 1=1  ) USING 
> UNIQUE ID SRID 25832 FILTER"
>
>
> CLASS definition:
>         CLASS
>                 NAME            "CLASS 1"
>                 EXPRESSION ("[STATUS]" IN "in_ausfuehrung")
>                 STYLE
>                         OPACITY                 90
>                         OUTLINECOLOR    255 255 255
>                         WIDTH                   7
>                         LINECAP butt
>                 END#STYLE
>                 STYLE
>                         OPACITY                 100
>                         COLOR                   [COLOR]#28 22 63
>                         WIDTH                   4
>                         LINECAP butt
>                 END #STYLE
>         END #CLASS
>         CLASS
>                 NAME            "CLASS 2"
>                 EXPRESSION ("[STATUS]" IN "geplant_genehm_gut")
>                 STYLE
>                         OPACITY                 90
>                         OUTLINECOLOR    255 255 255
>                         WIDTH                   7
>                         LINECAP butt
>                 END#STYLE
>                 STYLE
>                         OPACITY                 100
>                         PATTERN                   12 6 12 6 END
>                         COLOR                   [COLOR]#28 22 63
>                         WIDTH                   4
>                         LINECAP butt
>                 END #STYLE
>         END #CLASS
>
>         CLASS
>                 NAME            "CLASS 3"
>                 EXPRESSION ("[STATUS]" IN "geplant_n_genehm")
>                 STYLE
>                         OPACITY                 90
>                         OUTLINECOLOR    255 255 255
>                         WIDTH                   7
>                         LINECAP butt
>                 END#STYLE
>                 STYLE
>                         OPACITY                 100
>                         PATTERN                   12 6 4 6 END
>                         COLOR                   [COLOR]#28 22 63
>                         WIDTH                   4
>                         LINECAP butt
>                 END #STYLE
>         END #CLASS
>
>
> Is this a know issue or do you have any hint for me to solve it?
>
>
> Mit freundlichen Grüßen
> Dierk Linsenmaier
>
> -- 
>
> Dierk Linsenmaier
>
> Team GIS
> Informationstechnik
>
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