[mapserver-users] Different SIZEUNITS for line width and label fontsize

[Vladimir Cvejanovic]

Hi Thomas,

Thanks for your reply. I have already plaid around with MINSIZE and 
MAXSIZE. They are a good way to avoid the labels being displayed when 
they are too small to read. Also coupled with MINSCALE and MAXSCALE 
class definitions I was able to set up three classes for large, medium 
and small text depending on the scale used.

This isn't a bad solution at all but I wanted to see if there is away to 
prevent the labels scaling at all within the same layer definition as 
the scalable (real-world sized) lines.

Thanks,
Vladimir


thomas bonfort wrote:
> hi,
> you can use minsize and maxsize in your label: these are always pixels:
>
> size 8
> minszie 8
> maxsize 8
>
> regards,
> thomas
>
> On Tue, Feb 3, 2009 at 12:17, Vladimir Cvejanovic
> <vladimir at gessolutions.com> wrote:
>   
>> Hi All,
>>
>> In the Mapfile, Is it possible to have different SIZEUNTIS for line width
>> and label font in the same layer? The example is below.
>>
>> I have managed to solve this by defining two layers one which only displays
>> the line and one which only displays the labels however this seems like a
>> hack and very inefficient from a processing / querying point of view.
>>
>> The context is a line layer containing road lines which have a width in
>> meters but labels in pixels. This would make things scale nicely Can this be
>> done? Does anyone have a better approach?
>>
>> Thanks,
>> Vladimir
>>
>> LAYER
>>   NAME 'highway'
>>   TYPE LINE
>>   DATA 'highway.shp'
>>
>>   STATUS DEFAULT
>>   TRANSPARENCY 30
>>
>>   LABELITEM "NAME"
>>   SIZEUNITS meters
>>
>>   CLASS
>>      NAME 'highway'
>>      STYLE
>>        WIDTH 5 #WANT THESE TO BE METERS
>>        COLOR 55 55 55
>>      END
>>      LABEL
>>       TYPE TRUETYPE
>>       FONT FreeSans
>>       SIZE 08 # WANT THESE TO BE PIXELS
>>       COLOR 0 0 0
>>       OUTLINECOLOR 255 255 255
>>       ANTIALIAS TRUE
>>       ANGLE AUTO
>>       MINFEATURESIZE AUTO
>>       FORCE true
>>     END
>>   END
>>  END
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