This, for example:
v - c(9.6996, 99.99)
formatC(v, digits=3, format=g)
shows:
9.7 100
This is scientifically incorrect for the first number in the sense that I
like to show all 3 significant digits, including trailing zero's.
Is there a way that the first number would show as 9.70?
By
I think that I answered my own question.
Since formatC is an implementation of the C-style formatting, I thought that
a # as flag could work (for g and G conversions, trailing zeros are not
removed from the result as they would otherwise be). Although not in the
online help, this worked in R
Try this where vf is the output of your format statement:
gsub([.]\\B, , vf)
Actually I was surprised at this as my reading of ?regex suggests it
should have been \\b but when that did not work I tried \\B and that
did work.I am using
R version 2.4.0 Patched (2006-10-24 r39722)
on Windows
I have found that sprintf gets this right, although the syntax of the
command itself is a little less clear.
sprintf(%.2f, 9.6996)
[1] 9.70
I hope that this helps,
Andrew
On Fri, Nov 17, 2006 at 02:14:58PM -0800, RMan54 wrote:
This, for example:
v - c(9.6996, 99.99)
formatC(v,
Yes, you can always tweak one number but it may mess up the others. That's
why my example included two numbers. When you use sprintf this way:
v - c(9.6996, 99.99)
sprintf(%.2f, v)
you get:
9.70 99.99
Now I have 4 significant digits for the 2nd number! The .2 in the format
string always
Nice solution.
I believe that showing the decimal point is correct. It demonstrates
that the number is not an integer.
Cheers
Andrew
On Fri, Nov 17, 2006 at 02:43:10PM -0800, RMan54 wrote:
I think that I answered my own question.
Since formatC is an implementation of the C-style
You must be thinking of some other language:
is.integer(1)
[1] FALSE
On 11/17/06, Andrew Robinson [EMAIL PROTECTED] wrote:
Nice solution.
I believe that showing the decimal point is correct. It demonstrates
that the number is not an integer.
Cheers
Andrew
On Fri, Nov 17, 2006 at
I meant that it demonstrates that the number is not an integer to the
reader, regardless of how it is stored. In the reporting of
measurements,
10
is interpreted as an integer, whereas
10.
is interpreted as a real, rounded to two significant digits.
Cheers
Andrew
On Fri, Nov 17, 2006 at
