https://communities.sas.com/t5/Statistical-Procedures/SPP-Circular-Area/m-p/610479#M29552 For mapped point patterns, PROC SPP does not support circles or other arbitrarily shaped regions. However, if you had a spatial point pattern and you did not give any boundary specification, PROC SPP 'estimates' a boundary using the Ripley-Rasson estimator. However, the starting point for the Ripley-Rasson estimator is also a rectangle. Mon, 09 Dec 2019 14:25:58 GMT strictscience 2019-12-09T14:25:58Z https://communities.sas.com/t5/Statistical-Procedures/SPP-Circular-Area/m-p/610223#M29541 <P>I'm using the SPP procedure to test for Complete Spatial Randomness.&nbsp; The procedure appears to require a rectangular area for analysis but I would prefer to test for CSR over a circular region.&nbsp; Is this possible and, if so, how?</P><P>&nbsp;</P><P>Thanks,</P><P>&nbsp;</P><P>Gene</P> Sat, 07 Dec 2019 19:41:55 GMT https://communities.sas.com/t5/Statistical-Procedures/SPP-Circular-Area/m-p/610223#M29541 genemroz 2019-12-07T19:41:55Z https://communities.sas.com/t5/Statistical-Procedures/SPP-Circular-Area/m-p/610479#M29552 For mapped point patterns, PROC SPP does not support circles or other arbitrarily shaped regions. However, if you had a spatial point pattern and you did not give any boundary specification, PROC SPP 'estimates' a boundary using the Ripley-Rasson estimator. However, the starting point for the Ripley-Rasson estimator is also a rectangle. Mon, 09 Dec 2019 14:25:58 GMT https://communities.sas.com/t5/Statistical-Procedures/SPP-Circular-Area/m-p/610479#M29552 strictscience 2019-12-09T14:25:58Z