# esda.shape.equivalent_rectangular_index

esda.shape.equivalent_rectangular_index(collection)

  Deviation of a polygon from an equivalent rectangle

  \[\frac{\sqrt{A}}{A_{MBR}} \times \frac{P_{MBR}}{P}\]

  where \(A\) is the area, \(A_{MBR}\) is the area of minimum bounding rotated rectangle, \(P\) is the perimeter, \(P_{MBR}\) is the perimeter of minimum bounding rotated rectangle.

  Notes

  Implementation follows [BC17].