Thanks for the response, sorry I didn't post it initially.
kt.mat <-
function(x,y,z){
for(i in 1:length(x)){for(j in
1:length(y)){z[i,j]<-(y[j]-y[i])/(x[j]-x[i])}}
return(z)}
kt.slope <-
function(x,y,z,s){
count<-0
for(i in 1:length(x)){for(j in 1:length(y)){
if(j >= i+1) {
count<-count+1
s[count]<-z[i,j]}
}}
print(count)
return(s)}
#Site23
x <- c(1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010)
y <-
c(17.942,3.43,14.062,14.814,13.778,13.706,9.748,13.088,12.1309728,9.644646671,9.134,8.84)
z<-matrix(0:0,length(x),length(y))
z<-kt.mat(x,y,z)
z
s<-c(1:(length(x)*(length(x)-1)/2))
s<-kt.slope(x,y,z,s)
s
slope=median(s)
intercept=median(y)-slope*median(x)
cbind(slope,intercept)
plot(x,y)
abline(intercept,slope)
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