Hello On Wed, Aug 10, 2011 at 2:31 PM, Jean V Adams <jvad...@usgs.gov> wrote: > The function format() might serve your needs. > This looks very promising, but yields some strange results. See below:
> x <- data.frame(a=rnorm(10), b=rnorm(10), c=rnorm(10), d=letters[1:10]) > x a b c d 1 0.54114449 -0.11195580 1.526279364 a 2 3.27109063 0.50848249 -0.215760332 b 3 -0.27064475 -1.04749725 0.082319811 c 4 -0.06638611 -0.58600572 0.004148253 d 5 -0.06170739 -0.37885203 0.689125494 e 6 0.53211363 -0.09150913 -0.463972307 f 7 -0.43314431 -0.28981614 -0.973410994 g 8 0.52137857 -1.15077343 0.163120205 h 9 -1.39581552 1.27378389 0.136708313 i 10 0.06348058 -0.00369746 -0.570214119 j > format(x, digits=2) ##it displays 3 or 4 digits, instead of the required 2 a b c d 1 0.541 -0.1120 1.5263 a 2 3.271 0.5085 -0.2158 b 3 -0.271 -1.0475 0.0823 c 4 -0.066 -0.5860 0.0041 d 5 -0.062 -0.3789 0.6891 e 6 0.532 -0.0915 -0.4640 f 7 -0.433 -0.2898 -0.9734 g 8 0.521 -1.1508 0.1631 h 9 -1.396 1.2738 0.1367 i 10 0.063 -0.0037 -0.5702 j > format(x, digits=2, nsmall=1, scientific=7) ##no change when setting related > arguments a b c d 1 0.541 -0.1120 1.5263 a 2 3.271 0.5085 -0.2158 b 3 -0.271 -1.0475 0.0823 c 4 -0.066 -0.5860 0.0041 d 5 -0.062 -0.3789 0.6891 e 6 0.532 -0.0915 -0.4640 f 7 -0.433 -0.2898 -0.9734 g 8 0.521 -1.1508 0.1631 h 9 -1.396 1.2738 0.1367 i 10 0.063 -0.0037 -0.5702 j > round(x[1:3], digits=2) ##works as expected a b c 1 0.54 -0.11 1.53 2 3.27 0.51 -0.22 3 -0.27 -1.05 0.08 4 -0.07 -0.59 0.00 5 -0.06 -0.38 0.69 6 0.53 -0.09 -0.46 7 -0.43 -0.29 -0.97 8 0.52 -1.15 0.16 9 -1.40 1.27 0.14 10 0.06 0.00 -0.57 Any ideas why format() and round() give so different results? Can format() be set to behave similarly to round? Regards Liviu ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.