[mapguide-users] How to zoom to the selected feature, or how to caculate the scale?

[JohnSoft]

when i use the function 'Zoom to the selected feature',I noticed that the
scale needed to be input by the user,and this is not so convinent.

so,if i get the feature,how can i caculate the proper scale,so that the map
can zoom to display the selected features in the center of the display area?


I know it's very easy in ArcGIS by get the extent of the selected
features.So,how can i get the same function in MGOS?

thanks  in advance.



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