how to use “for loop” and “write.csv” at the same time?

Question

I have an array. It has lat,lon,time,and value. Time starts from 1 to 300. Here is part of array for time=1.

myarray[,,1]
     lon                        
         


        

Answer 1

One way is

for (i in 1:300)  {
write.table(myarray[,,i],file=""myarray.i.csv"",append=TRUE,sep=",",col.names=TRUE,row.names=TRUE) 
  }

Answer 2

There are multiple ways of going about this:

paste('myarray', i, 'csv', sep = '.')

or:

sprintf('myarray.%d.csv', i)

I prefer the last one.

Answer 3

This should work fine:

n = dim(mydata)[3]

for(i in 1:n) {
  #unpack a 3D array
  mat = mydata[,,i]
  form = sprintf('subject_%s.csv', i)
  write.csv(mat, file = form)

}