Dynamic map title

Thu Aug 26 17:27:27 EDT 2004

On Thu, 2004-08-26 at 15:16, Stefanie Weykam wrote:
> I think I am getting closer (thanks to your help) but still don't get it.
> Let me resume - I have this annotation layer with a point feature and a
> text, which is the (sub)title of my map.
> With it's default values it is perfectly visible, including font and color
> specifications. Trouble starts when I try to change the text via code...
>
> LAYER
>      NAME       "subtitESP"
>      STATUS     ON
>      TRANSFORM  FALSE
>      TYPE       ANNOTATION
>      FEATURE
>         POINTS  435 10  END
>         TEXT    "Merops apiaster"      # this is the text to be changed!!!!
>      END
>      CLASS
>           LABEL
>                TYPE      TRUETYPE #BITMAP
>                FONT      verdana-italic
>                SIZE      12
>                POSITION  LL
>                COLOR     160 90 0
>           END
>  #    TEXT      "Steve's method"
>      END
>  END
>
> ..Steve suggested to use the class text property instead of the feature so I
> commented out the feature part, but no luck.....
>
> <?php
> $map_path="c:/web/";
> $map_file="test.map";
> $map=ms_newMapObj($map_path.$map_file);
> $img=$map->draw();
> $imgURL=$img->saveWebImage();
>
> $subtitESP=$map->getLayerByName('subtitESP');
>
> # Steve's suggestion: edit the TEXT property of the class:
> $clObj=$subtitESP->getClass(0);
> //$clObj->setText('Steve');
> .....here I get 'Wrong parameter count for settext()'
>
>
> # ..Sean and Eric suggested more or less the same: to remove the feature and
> add a new feature: This is the part where I get a bit lost - do I have to
> specify the line object? set the point coordinates to map or to image
> coordinates? I get no error message but the new text doesn't show either.
> $myshpObj=ms_NewShapeObj(MS_SHAPE_LINE);
> $p=ms_newPointObj();
> $l=ms_newLineObj(); #  according to the MapScript Class Ref - this is the
> onlytype that can be added to a shape???
> //$p->setXY(1185001, 4879000);  # (635,10) map or img coords????
> $p->setXY(635, 10);
> $l->add($p);
>
> $myshpObj->add($l);
> $myshpObj->set('text', 'Sean and Eric');
> //$subtitESP->addFeature($myshpObj, MS_SHAPE_LINE);
> $subtitESP->addFeature($myshpObj);
>
> $subtitESP->draw($img);
> $imgURL=$img->saveWebImage();
>
> ?>
> <html>
> <body>
> <form name="mapa" method="get"  action=<?php echo
> $HTTP_SERVER_VARS['PHP_SELF']?>>
>   <input type="image" name="image" src="<?php echo $imgURL ?>" ></br>
> </form>
>
> </body>
> </html>
>

Here is my layer definition:

LAYER
  GROUP "Contaminants"
  NAME "contaminant_label"
  STATUS OFF
  TRANSFORM FALSE
  TYPE ANNOTATION
  CLASS
    STYLE
    END
    LABEL
      TYPE TRUETYPE
      FONT arial
      SIZE 12
      COLOR 0 0 0
      ANTIALIAS TRUE
      POSITION LR
      PARTIALS FALSE
      BUFFER 0
    END
  END
END

And the PHP Mapscript 4.2 code which displays a text label on the map.

   $oLayer = $oMap->getLayerByName('contaminant_label');
   $oLayer->set("status", MS_ON);

   $pt = ms_newPointObj();
   $ln = ms_newLineObj();
   $shp = ms_newShapeObj(MS_SHAPE_POINT);
   // these are pixel coordinates because TRANSFORM is FALSE
   $pt->setXY(10,20);
   $ln->add($pt);
   $shp->add($ln);
   $shp->set("text", "Median Concentrations");
   $oLayer->addFeature($shp);

Did you remember to turn the layer ON?