On Mon, 27 Feb 2017, Vicente Vera wrote:
Hello again, I'm sorry for being noisy.
OK yes, `org-babel-read' is indeed converting "number strings" to
numbers.
[proposed fix deleted]
I don't have a feeling as to whether the proposed fix is appropriate.
However, there are other ways to solve this issue. See below.
- In R every value is a string. "var2" contains no numbers (is a
character vector).
- Upon conversion to a table Org removes the zero from "var2" last
value.
------------------------------
#+BEGIN_SRC R :session *mwe* :results value table :colnames yes
tst <- data.frame(var1 = c("a", "b", "c", "d", "e", "f", "g"),
var2 = c("150", "210", "140", "150", "192", "497",
"3.350"),
stringsAsFactors = FALSE)
tst
#+END_SRC
#+RESULTS:
| var1 | var2 |
|------+------|
| a | 150 |
| b | 210 |
| c | 140 |
| d | 150 |
| e | 192 |
| f | 497 |
| g | 3.35 |
------------------------------
Here's the output as seen in R:
: > tst
: var1 var2
: 1 a 150
: 2 b 210
: 3 c 140
: 4 d 150
: 5 e 192
: 6 f 497
: 7 g 3.350
Details on the data frame:
: > str(tst)
: 'data.frame': 7 obs. of 2 variables:
: $ var1: chr "a" "b" "c" "d" ...
: $ var2: chr "150" "210" "140" "150" ...
It seems Org knows that the values on column "var2" are numbers and
converts the strings to numbers, applying some obscure trimming on the
digits. The "3.350" value needs to be left as is.
IMHO, it is often best to handle formatting of output in the language of
the src block. There are some tools for doing this in R: the `ascii'
package is one. `xtable' is another.
You can always do something like this:
#+BEGIN_SRC R :session *mwe* :results output
tst <- data.frame(var1 = c("a", "b", "c", "d", "e", "f", "g"),
var2 = c("150", "210", "140", "150", "192", "497", "3.350"),
stringsAsFactors = FALSE)
cat( capture.output( print(tst, row.names=FALSE)), sep="\n")
#+END_SRC
Or you can use `ox-ravel'[1] to convert to one of the knitr-like formats
and let knitr or rmarkdown handle the output conversion.
Best,
Chuck
[1] https://github.com/chasberry/orgmode-accessories
