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Excel model to find distance from XY points to a cirle

Posted on 2013-06-18
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I need an Excel model / functions to calculate distance from a number of points to a given circle.

I have a circle with a center xy and a given radius.
I have a list of points.
I need to know the closest distance from each point to the circle

Distance from circle
The Excel model is attached - only thing missing is the calculation of the distance.
Points-distance-to-a-circle.xlsx
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Question by:NielsMadsen
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4 Comments
 
LVL 81

Expert Comment

by:zorvek (Kevin Jones)
ID: 39255521
Place this formula in E9 and copy down:

=((C9-$C$5)^2+(D9-$D$5)^2)^0.5-$C$2

Kevin
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Author Comment

by:NielsMadsen
ID: 39255618
Excellent!

Is there a way to tell if the point is inside or outside the circle?
(is that the negative/positive distance?)

Niels
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LVL 81

Accepted Solution

by:
zorvek (Kevin Jones) earned 2000 total points
ID: 39255650
Yes.

Kevin
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Author Closing Comment

by:NielsMadsen
ID: 39255677
Precise, quick...GREAT
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