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Informative message if no id.vars #38

merged 1 commit into from Mar 10, 2014


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tonytonov commented Jan 27, 2014

Sometimes there is a need to melt data "as is", i.e. with no arguments provided:

df <- data.frame(a=1:3, b=4:6)

The output is

Using  as id variables
  variable value
1        a     1
2        a     2
3        a     3
4        b     4
5        b     5
6        b     6

The message is not very informative and may be misleading. A small "if" handles this case, changing the message.


hadley commented Mar 10, 2014

I think I'd prefer "No id variables, using all as measured", since it parallels the other message a little better.

@hadley hadley added a commit that referenced this pull request Mar 10, 2014

@hadley hadley Merge pull request #38 from tonytonov/master
Informative message if no id.vars

@hadley hadley merged commit c20dafe into hadley:master Mar 10, 2014

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tonytonov commented Mar 12, 2014

Fine, thanks for merging!

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