Question

We are trying to put 730 zero values in front of an 365 X 1 vector with values.
I cut out this vector from another matrix. Thus, the row index numbers are now no more helpful and confusing e.g. the vector with the values starts with 50.
If I create another vector or array with the zero values and then use rbind to bind it before the vector with the values it will produce strange values due to mixed up row index numbers and handle it as a 3d element.

Thanks for any ideas how to achieve that or how to reset the row index numbers.
best Fabian!

Example:
This is my vector with values

 pred_mean_temp
 366     -3.0538333
 367     -2.8492875
 368     -3.1645825
 369     -3.5301074
 370     -1.2463058
 371     -1.7036682
 372     -2.0127239
 373     -2.9040319
 ....

I want to add a zero vector with 730 rows in front of it.
So it should look like this:

 1        0
 2        0
  ....
 731     -3.0538333   
 732     -2.8492875
 733     -3.1645825
  .... 

Answer 1

Something like this?

# create a vector
a <- rnorm(730)
# add the 0
a <- c(rep(0,730), a)

Then you could make a matrix:

m <- cbind(1:length(a), a)