Example:
例：
fdistr[ which(fdistm[,4]<=5),]
zip long lat 1 2 3 4 5
32403 72756 -94.07141 36.34224 3 122 19401 51 704
32404 72757 -94.11565 36.37198 2 141 19546 45 740
32405 72758 -94.14622 36.30662 1 149 19578 30 724
fdistr[ which(fdistm[,5]<=5),]
zip long lat 1 2 3 4 5
32312 72601 -93.09345 36.23698 181 1 16548 328 354
fdistr[ which(fdistm[,6]<=5),]
zip long lat 1 2 3 4 5
13271 30529 -83.46842 34.21042 16867 15514 1 17241 12593
fdistr[ which(fdistm[,4]<=5),]
