I have the following data frame:

> foo
           w         x         y         z
n 1.51550092 1.4337572 1.2791624 1.1771230
q 0.09977303 0.8173761 1.6123402 0.1510737
r 1.17083866 1.2469347 0.8712135 0.8488029

What I want to do is to change it into :

> newdf
1     n    w 1.51550092
2     q   w 0.09977303
3     r   w 1.17083866
4     n    x 1.43375725
5     q   x 0.81737606
6     r   x 1.24693468
7     n   y 1.27916241
8     q   y 1.61234016
9     r   y 0.87121353
10   n    z 1.17712302
11   q   z 0.15107369
12   r    z 0.84880292

Whtat's the way to do it?

 - G.V.

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