| spaa-package | SPecies Association Analysis | 
| add.col | Add one column from A to B, according to one column of common name. | 
| data2mat | Convert species list data to species matrix | 
| datasample | community matrix example | 
| deg2dec | Degree to decimal | 
| dist2list | Convert distance matrix to pairwised list | 
| freq.calc | Species relative frequency | 
| geodist | Hight precision Great circle distance between two places | 
| lab.mat | Convert vector of XY labels to label matrix | 
| lgeodist | Low precision Great circle distance between two places | 
| list2dist | Convert pairwise list to distance matrix | 
| niche.overlap | Niche overlap between each pair of species | 
| niche.overlap.boot | Boostrap of niche overlap | 
| niche.overlap.boot.pair | Niche overlap boostrap utility function | 
| niche.overlap.pair | Niche overlap between one pair of species. | 
| niche.width | Niche width | 
| plotlowertri | Plotting lower semi matrix | 
| plotnetwork | Correlation network plot | 
| sp.assoc | Total species association | 
| sp.pair | Species association between each pair of species | 
| spaa | SPecies Association Analysis | 
| splist | species list used in function add.col() | 
| sub.sp.matrix | Subset species matrix according to relative frequency | 
| testdata | Example Data | 
| turnover | Calculating species turnover | 
| XYname | Generating vector of XY labels |