Geological Image Analysis Software (GIAS) 
Nearest Neighbor (NN) Analysis Results 
	 
Input Image Name:  	 GiantCausway_no_Border.tif 
Date of Analysis:  	 04-Dec-2009 
Minimum Object Area:  	 10 	 m^2 
Maximum Object Area:  	 252122 	 m^2 
Lower B/W Threshold:  	 0 	 DN 
Upper B/W Threshold:  	 250 	 DN 
Pixel Size:  	 1 	 m 
Ignore Boundary Bubbles:   	 Yes 
	 
Statistical Summary for Actual NN Distances 
	 
Actual NN Distances 
Total Number of Objects  	 75 
Number of Objects in Convex Hull  	 63 
Convex Hull Area (Pixels) 	 8.704322e+006 
Population Density (num/unit area) 	 7.237784e-006 
Minimum NN Distance (unit distance) 	 279.210654 
Maximum NN Distance (unit distance) 	 440.513151 
Mean NN Distance (unit distance) 	 341.330174 
Standard Deviation (1 sigma)  	 33.625538 
Standard Deviation (2 sigma)  	 67.251076 
Modal NN Distance 	 279.210654 
Skewness 	 0.172744 
Kurtosis 	 3.018541 
	 
Statistical Summary for Expected  NN Distances 
 
	 Poisson (Random) 	 Normalized Poisson 	 Scavanged (k = 1) 	 Scavanged (k = 2)  
Expected Mean NN Distance 	 185.851985 	 328.383720 	 278.777978 	 348.472472 
R  	 1.836570 	 1.039425 	 1.224380 	 0.979504  
Ideal R  	 1.059870 	 1.059870 	 1.076818 	 1.097426  
R Positive Threshold at 1 sigma  	 1.138430 	 1.138430 	 1.137520 	 1.152506  
R Positive Threshold at 2 sigma  	 1.216989 	 1.216989 	 1.198222 	 1.207586  
R Hegative Threshold at 1 sigma  	 0.981310 	 0.981310 	 1.016116 	 1.042346  
R Negative Threshold at 2 sigma  	 0.902751 	 0.902751 	 0.955414 	 0.987266  
C  	 12.702916 	 0.311508 	 4.906246 	 -0.553144  
Ideal C  	 0.874933 	 0.874933 	 1.617960 	 2.506168  
C Positive Threshold at 1 sigma  	 2.020145 	 2.020145 	 2.892970 	 3.918174  
C Positive Threshold at 2 sigma  	 3.165357 	 3.165357 	 4.167980 	 5.330180  
C Hegative Threshold at 1 sigma  	 -0.270279 	 -0.270279 	 0.342950 	 1.094162  
C Negative Threshold at 2 sigma  	 -1.415491 	 -1.415491 	 -0.932060 	 -0.317844  
	 
Detailed Results 
	 
Objects forming the Convex Hull 
Object Identification Number 	 Centroid x Coordinate 	 Centroid y Coordinate 
1 	 2.660681e+002 	 3.780062e+002 
2 	 6.042093e+002 	 2.088204e+002 
3 	 9.482536e+002 	 2.000675e+002 
4 	 3.116225e+003 	 2.894912e+002 
5 	 3.386907e+003 	 5.900389e+002 
6 	 3.424605e+003 	 1.425973e+003 
7 	 3.402859e+003 	 1.826646e+003 
8 	 3.325125e+003 	 2.788108e+003 
9 	 2.977590e+003 	 3.039530e+003 
10 	 2.524728e+003 	 3.137171e+003 
11 	 3.121370e+002 	 3.005880e+003 
12 	 2.476806e+002 	 2.004782e+003 
13 	 2.660681e+002 	 3.780062e+002 
	 
Objects within the Convex Hull 
Object Identification Number 	 Centroid x Coordinate 	 Centroid y Coordinate 	 Nearest Neightbor Distance 	 Nearest Neightbor Object ID Number 
1 	 317.671975 	 1083.749975 	 362.551740 	 5 
 2 	 351.681009 	 2630.153642 	 350.358209 	 3 
 3 	 387.037135 	 2281.583966 	 350.358209 	 2 
 4 	 575.816241 	 1726.186276 	 343.636301 	 5 
 5 	 514.834802 	 1388.004119 	 343.636301 	 4 
 6 	 553.885517 	 523.062936 	 287.851523 	 13 
 7 	 586.153214 	 809.384528 	 288.134098 	 6 
 8 	 674.970913 	 2062.434658 	 350.563294 	 4 
 9 	 640.043974 	 2947.267466 	 330.652419 	 15 
 10 	 683.959494 	 2495.980171 	 347.068188 	 16 
 11 	 736.211655 	 1084.149043 	 313.070398 	 7 
 12 	 873.899119 	 1445.854450 	 348.511017 	 20 
 13 	 830.746722 	 444.282402 	 279.210654 	 14 
 14 	 945.733077 	 698.716535 	 279.210654 	 13 
 15 	 959.492259 	 3032.612735 	 330.652419 	 9 
 16 	 1001.982815 	 2634.967558 	 347.068188 	 10 
 17 	 1010.921098 	 1838.318118 	 383.695552 	 20 
 18 	 1135.267924 	 2210.218022 	 392.137313 	 17 
 19 	 1066.343030 	 1109.289812 	 296.347907 	 24 
 20 	 1215.713562 	 1513.845741 	 348.511017 	 12 
 21 	 1266.187753 	 477.524282 	 350.688860 	 23 
 22 	 1321.940105 	 2901.423548 	 361.400679 	 25 
 23 	 1350.959787 	 817.812951 	 344.440536 	 31 
 24 	 1355.045685 	 1176.169250 	 296.347907 	 19 
 25 	 1366.177700 	 2542.740560 	 361.400679 	 22 
 26 	 1431.648682 	 1867.448559 	 382.657647 	 34 
 27 	 1605.299584 	 1478.837787 	 391.155755 	 20 
 28 	 1655.421910 	 2266.128367 	 384.925790 	 39 
 29 	 1585.762352 	 286.627695 	 315.403098 	 35 
 30 	 1669.253851 	 3049.095648 	 344.088809 	 33 
 31 	 1661.137697 	 668.049980 	 344.109120 	 36 
 32 	 1819.426095 	 1087.288341 	 440.513151 	 38 
 33 	 1717.770311 	 2708.444417 	 344.088809 	 30 
 34 	 1813.268766 	 1839.288539 	 310.455919 	 41 
 35 	 1899.973100 	 259.228427 	 305.685759 	 42 
 36 	 2004.882552 	 683.879096 	 344.109120 	 31 
 37 	 2055.765622 	 3106.158181 	 390.701269 	 30 
 38 	 2004.043438 	 1487.248680 	 340.359020 	 43 
 39 	 2038.605712 	 2229.549173 	 384.925790 	 28 
 40 	 2074.266012 	 2632.738136 	 333.922368 	 45 
 41 	 2123.719610 	 1841.063660 	 310.455919 	 34 
 42 	 2201.697400 	 308.281770 	 305.685759 	 35 
 43 	 2256.916279 	 1259.433867 	 322.297486 	 50 
 44 	 2329.702044 	 879.086588 	 378.963939 	 36 
 45 	 2347.253495 	 2825.045136 	 282.253201 	 53 
 46 	 2398.636245 	 1672.878507 	 322.281557 	 41 
 47 	 2443.595776 	 504.075245 	 311.207181 	 42 
 48 	 2438.098662 	 2096.752181 	 347.395175 	 49 
 49 	 2483.639684 	 2441.149368 	 347.395175 	 48 
 50 	 2575.962789 	 1213.772131 	 322.297486 	 43 
 51 	 2708.796017 	 823.330525 	 383.172257 	 44 
 52 	 2737.786566 	 1519.547696 	 343.928538 	 60 
 53 	 2623.484725 	 2767.052233 	 282.253201 	 45 
 54 	 2807.542283 	 1904.510297 	 344.330237 	 61 
 55 	 2798.338835 	 409.866798 	 367.039329 	 47 
 56 	 2900.622416 	 2645.355175 	 302.680481 	 53 
 57 	 2886.023110 	 2282.351345 	 363.297289 	 56 
 58 	 2972.523923 	 1125.444558 	 327.545325 	 63 
 59 	 3065.792815 	 683.431576 	 382.582435 	 55 
 60 	 3081.610251 	 1528.039587 	 343.928538 	 52 
 61 	 3151.686665 	 1915.822076 	 344.330237 	 54 
 62 	 3279.629182 	 2328.732922 	 396.329397 	 57 
 63 	 3291.340480 	 1050.331686 	 327.545325 	 58 
 