Hi R-listers,
I'm using R only for a few basic functions but am having difficulty doing
something that *should* be simple. I have an nxn matrix, Q, where Q[i,j] is a
directed value (in this case, oil exports from i to j). Note that
Q[i,j]~=Q[j,i]. I imported column names along with the matrix then copied them
to the rows using rownames(Q) <- colnames(Q). Simple so far.
What I'd like to do now is convert Q for export into a vector of values with
the original row and column names intact. Having one vector each for row,
column, and cell would be ideal, e.g., [1,1] = i's name, [1,2] = j's name, and
[1,3] = Q[i, j]. But just being able to export my matrix data in vector form
with the correct row/col names for each observation would be sufficient.
Thus far I've tried c(), vector(), and a few others, but can't get the correct
results. They do generate the correct vector of matrix values, but they do not
appear to retain both row and column names. (Or, rather, I have not discovered
how to make them do so.)
To illustrate, my data currently look something like this:
A B C D
A | 0 |.1 |.4 |.6 |
B |.2 | 0 |.2 |.1 |
C |.5 |.9 | 0 |.9 |
D |.7 | 0 |.3 | 0 |
I would like them to look like this (at least when exported as a .txt file, if
not necessary when displayed within R):
i j Q
| A | A | 0 |
| A | B |.1 |
| A | C |.4 |
| A | D |.6 |
| B | A |.2 |
| B | B | 0 |
| B | C |.2 |
[...] and so on
If anybody knows how to do this, I will be extremely appreciative!
Best regards,
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