如何在R中绑定大型矩阵并保留格式和属性？

Question

I have matrices like this one z - its how it looks in RStudio env.:

z            Large Matrix (625562 elements)
     attr(*, "dimnames")=List of 2
     ..$ : NULL
     ..$ : chr [1:3] "x" "y" "tif"

Now having more like this I try to combine the into one. I thought this would easy work

z0 = rbind(z0, z)

and it looks ok in plot but the format is wrong, like:

z0            Large Matrix (19530191 elements)
   : num 414640
   : num 414922
...

This cause problems with further functions. I tried to set attributes like dimnames(z0) <- list(NULL, c("x", "y", "tif")) and in fact the list itself is like that one from z but it doesn't apply. Please how to do it?

data structures:

> head(z0)
     x        y        tif
[1,] 454647.5 364856.5 0  
[2,] 454657.5 364856.5 0  
[3,] 454658.5 364856.5 0  
[4,] 454635.5 364855.5 0  
[5,] 454656.5 364855.5 0  
[6,] 454657.5 364855.5 0  

> head(z)
            x        y tif
[1,] 456170.5 361799.5   0
[2,] 456171.5 361799.5   0
[3,] 456181.5 361799.5   0
[4,] 456182.5 361799.5   0
[5,] 456192.5 361799.5   0
[6,] 456193.5 361799.5   0

Answer 1

I found what's wrong: in the loop initiator if the object shouldn't be a list.

z0 = list()
for (i in 1:K) {
   z0 = rbind(z0, z[i])
}

but z0 = NULL Simple as that!