Measure Action Does Not Always Give Correct Area

Question

The best way to describe this is by looking at the attached two screen shots... The one that is a square has the correct area, but the one that obviously should be larger, is actually smaller...  The line distances seem just fine, but the area is not correct... seems to be when the polygon is more convex.  Is this a bug?

Thanks!

MeasureIncorrect.JPG

MeasureCorrect.JPG

Danielle_Papineau_0-1647047683937.png

Print Widget defaults needed.png

DeryckMills · Answer

Ryan,

Thank you so much for your report. We are currently looking into this problem.

Any luck with a fix for this problem.  Am also having the same issue.

Thanks

Anonymous User · Answer

Original User: rcoodey

I looked through your issue... I'm not using a Geometry Service but using a MeasureAction... this action takes care of the conversion for me, I just have to specify a few properties:

MeasureAction.AreaUnit = ESRI.ArcGIS.Client.Actions.AreaUnit.Acres;
MeasureAction.DistanceUnit = ESRI.ArcGIS.Client.Actions.DistanceUnit.Feet;
MeasureAction.MapUnits = DistanceUnit.DecimalDegrees;

MesureAction is not in the toolkit though or I would say go and look at the source for it and see what it is doing for conversions... As far as I know, the source for the API is not available though :( .

I have never used the AreasAndLengths Geometry Service, but I wonder if the Area calculation issue is similar/related to my above issue...

Sorry for not helping much 😞

ChristineZeller · Answer

Ryan,

It sounds like you have got the measure area tool down.  Sorry to cross my post with yours but I was wondering if you had time to quickly help me with my problem.  I just can't seem to get it.

http://forums.arcgis.com/threads/14730-Area-And-Perimeter

Thanks and Sorry.