can anyone help me for using for loop in R..????
i m working with 2 D matrix... and want to use interpolate function, which is available in R stat package(approx), through the complete set of matrix.
after using this function it is replacing the previous information. which i dont wont to...
please help.....
Maybe I can help if I can see the code, just the few lines that do the loop.
You need to generate a new matrix with interpolated values.
So first You will need to define the new matrix:
If your matrix is named "nm" then:
x=length(nm[1,])
y=length(nm[,1])
new_matrix=matrix(ncol=x,nrow=y)
for (i in 1:x)
{
new_matrix[,i]=interpolation_function(nm[,i])
}
I don't know , but if the interpolation function is used over full matrix and returns a matrix,
then You have to use
new_matrix=interpolation_function(nm)
instead of the upper rows.
I tried using the following code... and it was working well..... approx is the function used for interpolation method...
X = matrix(0,nrow(10),ncol(10));
for(i in 1:length(data))
{
X[i,i]
can anyone suggest me where i am going wrong.. as Approx function is working fine... i have values in X .. but when i write the values in the text file it is giving me this error::
"Error in data.frame(x = list(x = c(1, 2.00668151447661, 3.01336302895323, :
arguments imply differing number of rows: 450, 20"
for(i in 1:7)
{
X[[i]]
i got the solution for my last post...
"Error in data.frame(x = list(x = c(1, 2.00668151447661, 3.01336302895323, :
arguments imply differing number of rows: 450, 20"
.. but still I would like to discuss more of R and making efficient programing......
thank you
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