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USGS:Biology arrow icon Biological Informatics Program arrow icon Vegetation Characterization Program arrow icon Congaree Swamp National Monument arrow icon Accuracy Assessment Matrix

Accuracy Assessment Matrix

Congaree Swamp National Park Accuracy Assessment Contingency Matrix                                        
  AA Points   Users Con Con
  A AC AD AM C CD D E F FC G GC H I J K L M O P R U W X Y Total Acc Interval- Interval+
Mapped A 30                                                 30 100% 98% 102%
Points AC 1 17   1 4 1 1       2 1                 2         30 57% 40% 73%
  AD     29 1       1                                   31 94% 85% 102%
  AM **       0                                         0 0% 0% 0%
  C         29                       1               30 97% 90% 104%
  CD         1 29                                     30 97% 90% 104%
  D 2       2   27                                   31 87% 76% 99%
  E               31         1                       32 97% 90% 103%
  F         4     1 17                               22 77% 60% 94%
  FC 1                 4 3                             8 50% 15% 85%
  G                     6                           6 100% 92% 108%
  GC **                       0                         0 0% 0% 0%
  H                         30                       30 100% 98% 102%
  I                           29       1             30 97% 90% 104%
  J               1           1 28 1                   31 90% 80% 101%
  K                           1   29                 30 97% 90% 104%
  L 9           1 3                 14 2       1       30 47% 30% 63%
  M 4             1                   27             32 84% 72% 96%
  O 1                       2           27           30 90% 79% 101%
  P                           3           19         22 86% 72% 101%
  R **                                         0       0 0% 0% 0%
  U 1                                 1       28   1 31 90% 80% 101%
  W                                             21   21 100% 98% 102%
  X                                               7 1 8 88% 62% 113%
  Y                                                 8 8 100% 94% 106%
  Total 49 17 29 2 40 30 29 38 17 4 11 1 32 35 28 30 14 31 28 19 2 29 21 7 10 553  
  Prod Acc 61% 100% 100% 0% 73% 97% 93% 82% 100% 100% 55% 0% 94% 83% 100% 97% 100% 87% 96% 100% 0% 97% 100% 100% 80% Total In Agreement= 486  
  Con Interval -  49% 97% 98% -25% 60% 90% 84% 70% 97% 88% 25% -50% 85% 71% 98% 90% 96% 76% 89% 97% -25% 89% 98% 93% 54% Overall Accuracy= 88%  
  Con Interval + 74% 103% 102% 25% 85% 104% 103% 93% 103% 113% 84% 50% 102% 95% 102% 104% 104% 99% 104% 103% 25% 104% 102% 107% 106%  
   
  ** Not on Map  
  A. Mixed bottomland hardwoods M. Stands of even aged sweet gum  
  B. Category lumped with type A N. Category lumped with type A  
  C. Water tupelo dominant (at least 75%) O. Land use  
  D. Bald cypress dominant (at least 75%) P. Clear and selectively cut areas  
  E. Mixed bottomland hardwoods with emergent pine Q. Category lumped with type A  
  F. Swamp tupelo R. Category lumped with type A  
  G. Swamp tupelo / mixed hardwoods - riparian associated S. Category eliminate (use * instead)  
  H. Young plantation pine - even stands (pole or saplings) T. Category lumped with type C  
  I. Mature plantation pine - often with a minor hardwood component U. Riverbank & levee forests associated with the Congaree  
  J. Upland hardwoods and hardwoods in small depressions V. Category lumped with type A  
  K. Mixed stands of upland hardwood and pine W. Category lumped with type C  
  L. Hurricane damaged areas (open canopy, vines, shrubs, downed trees) X. Willow - Sand bars