Dynamic map title

[Steve Lime]

Have you just tried changing the class TEXT property, either via
MapScript or
the CGI? That is, don't set the text for the inline feature, set the
text for the
class used to draw that feature.

LAYER
  NAME       "subtit"
  STATUS     ON
  TRANSFORM  FALSE
  TYPE       ANNOTATION
  FEATURE
         POINTS  635 10  END
  END
  CLASS
     LABEL
            TYPE      TRUETYPE
            FONT      verdana            # verdana-italic
            SIZE      12
            POSITION  LL
            COLOR     80 130 0           # 160 90 0
     END
     TEXT "Special Title Text Goes Here!"
  END
END

Just an idea...

Steve

>>> Stefanie Weykam <sweykam at TELELINE.ES> 8/23/2004 7:02:49 AM >>>
Hi again,
last week, I asked the list how to get a dynamic title on the map. The
title
string depends on the currently displayed theme.
I got a message back (see below, thanks Sean) but I didn't get any
further
and am still running around in circles. Apparently it is not possible
to
change the feature text.
I must add, that the string will be passed by a variable, it is not a
queriable value that belongs to the layer.

As an alternative I have been thinking in keeping a static head line
and add
a dynamic title just above the legend.
But the look is not too convincing either (limitations in style and
most of
all - string length!).

I also want the title to be embedded in the image object, not just HTML
text
written on top.

Does anybody have a good idea how to work around this limitation?

thanks,
Stefanie


On Aug 16, 2004, at 11:17 AM, Stefanie Weykam wrote:

> Hi all,
> I have an annotation layer, it contains a point (feature) and a
string
> to
> label this point.
> Actually, the string is the title of the map and I want to change it
> according to the currently displayed theme.
> Is there any feature object which can be set by MapScript? The Class
> Reference doesn't mention any. And, how do I change the color of the
> label?
> I always get error messages saying that the property (both color and
> text)
> don't exist or that the function setRGB() is undefined....???
> Which objects do have these properties - do I nedd colorObjects?
> styleObjects?? How do I create them?
> Thanks,
> Stefanie
>
>  LAYER
>      NAME       "subtit"
>      STATUS     ON
>      TRANSFORM  FALSE
>      TYPE       ANNOTATION
>      FEATURE
>         POINTS  635 10  END
>         TEXT    "Species Richness"      # "a species name"
>      END
>      CLASS
>         LABEL
>            TYPE      TRUETYPE
>            FONT      verdana            # verdana-italic
>            SIZE      12
>            POSITION  LL
>            COLOR     80 130 0           # 160 90 0
>         END
>      END
>  END
>
>

Stephanie,

Support for inline features is currently limited.  You cannot
access a feature once it is in the feature "set".

The thing to do is to leave out the FEATURE block in your map
file, and insert a new feature as needed:

     p = mapscript.pointObj(635, 10)     # the point
     s = mapscript.shapeObj(layer.type)  # new shape to hold point
     l = mapscript.lineObj()             # point must be in a line
     l.add(p)                            # add point to line
     s.add(l)                            # add line to shape

     s.text = 'Species Richness'         # label for point
     layer.addFeature(s)

     layer.draw(map, image)

cheers,
Sean

--
Sean Gillies
sgillies at frii dot com
http://users.frii.com/sgillies