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Hello,<br><br>Sorry for the simple question, but how do I use a function, such as quantile, which returns multiple values.<br><br>For example,<br><br>data(iris)<br>IRIS <- as.data.table(iris)<br>IRIS[, quantile(Sepal.Length), by = Species]<br><br>## returns the following.<br> Species V1<br> 1: setosa 4.300<br> 2: setosa 4.800<br> 3: setosa 5.000<br> 4: setosa 5.200<br> 5: setosa 5.800<br> 6: versicolor 4.900<br> 7: versicolor 5.600<br> 8: versicolor 5.900<br>....<br><br>I would like the values returned as columns or a vector with the column names returned by the quantile function.<br><br>Thanks,<br><br>Matt<br> </div></body>
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