[Mapserver-users] annotating multiple inline features

[Dylan Keon]

Thanks Steve, it's working now.  After reading your message I reexamined 
the docs and saw that classindex and text can be set using shape->set().

You wrote that the syntax is:
	int draw(mapObj map, layerObj layer, imageObj image)
but the current documentation still says it's:
	int draw(mapObj map, layerObj layer, imageObj img,
             int class_index, string text)

Should I file a bug so that the documentation gets changed?  Or is it 
that way for a reason?

Thanks,
Dylan


Steve Lime wrote:
> What you write helped jog my memory. Class index and label text values
> are indeed held
> within a shapeObj structure. This was done so shapes were more
> autonomous. So, you
> should be able to set those parameters and then call the draw method.
> It probably worked
> for you before because the default classindex for a shape is 0.
> 
> Steve
> 
> Stephen Lime
> Data & Applications Manager
> 
> Minnesota DNR
> 500 Lafayette Road
> St. Paul, MN 55155
> 651-297-2937
> 
> 
>>>>Dylan Keon <keon at nacse.org> 03/21/03 12:00PM >>>
> 
> Yeah, I call drawLabelCache() right before saveWebImage().
> 
> That bug report from the 3.5 era mentions the shape->draw() method no 
> longer takes class index and text string arguments.  The documentation
> 
> hasn't changed, though.  What's the status of shape->draw() in 3.6.x
> and 
> 3.7?
> 
> Seems like another way to do this might be to add an annotation layer
> to 
> the mapfile, then for each line create a new shape containing one
> point, 
> and use shape->set('text', 'test') to set annotation for that feature.
> 
> I'll give this a shot.  Anyone else tried this?
> 
> Thanks,
> Dylan
> 
> 
> Steve Lime wrote:
> 
>>Are you drawing the label cache further down in your code?
>>
>>
>>
>>>>>Dylan Keon <keon at nacse.org> 03/20/03 06:22PM >>>
>>
>>Hi,
>>
>>I'd like to label multiple inline features with text from user input.
> 
> 
>> From the 3.7 PHP MapScript docs it sounds like the ShapeObj draw() 
>>method should do this ("The text string is used to annotate the
>>shape"). 
>>  I figured I could label each feature this way as long as each
> 
> feature
> 
>>was put in a separate shape.  The features are created just fine, but
> 
> I
> 
>>don't get any labels.  I'm using 3.7 from a week ago.
>>
>>Is it related to this old bug?
>>http://mapserver.gis.umn.edu/bugs/show_bug.cgi?id=36 
>>
>>If this method is no longer available, can someone recommend a way to
> 
> 
>>label inline features in a similar manner?
>>
>>Thanks,
>>Dylan
>>
>>
>>   $image = $map->draw();
>>   $layer = $map->getLayerByName('flightlines');
>>
>>   for($i = 0; $i <= (count($beginlat) - 1); $i++) { 
>>
>>     $shape = ms_newShapeObj(MS_SHAPE_LINE); 
>>
>>     $line = ms_newLineObj(); 
>>
>>     $line->addXY($beginlon[$i], $beginlat[$i]);
>>     $line->addXY($endlon[$i], $endlat[$i]);
>>     $shape->add($line); 
>>
>>     $shape->draw($map, $layer, $image, 0, $label[$i]); 
>>
>>     $line->free(); 
>>
>>     $shape->free(); 
>>
>>   }
>>
>>
>>LAYER
>>   NAME flightlines
>>   STATUS ON
>>   #DATA #not needed, dynamic layer
>>   TYPE LINE
>>   CLASS
>>     COLOR 255 0 0
>>     SYMBOL 'circle'
>>     SIZE 4
>>     LABEL
>>       TYPE TRUETYPE
>>       FONT ARIAL
>>       SIZE 14
>>       COLOR 0 0 0
>>     END
>>   END
>>END

-- 
************************************************
  Dylan Keon
  GIS/Database Research Specialist
  Northwest Alliance for Computational
  Science and Engineering (NACSE)
  Oregon State University
  Corvallis, OR 97331
  keon at nacse.org        (541) 737-6608
************************************************