Bart van den Eijnden wrote to mapserver-users:
Hi list,
I was surprised to get a different scale back in 5.0 than in 4.8. I
tracked it down to the following difference in mapscale.c:
4.8.4:
md = width/(resolution*msInchesPerUnit(units, center_y)); /* was
(width-1) */
5.0:
md = (width-1)/(resolution*msInchesPerUnit(units, center_y)); /*
remember, we use a pixel-center to pixel-center extent, hence the width-1 */
But PHP/Mapscript's zoomscale function does not seem to deal correctly
with this new change:
from Chameleon's map_navigator:
// call the zoomscale function
echo $nScale;
$this->oSession->oMap->zoomscale($nScale, $oPixelPos,
$this->oSession->oMap->width, $this->oSession->oMap->height,
$oRect);
echo '<br/>'.$this->moMapObject->oMap->scale;
will output:
4278<br/>4287.52783964
Best regards,
Bart
