[Date Index]
[Thread Index]
[Author Index]
Re: Updating NumberPadding?
*To*: mathgroup at smc.vnet.net
*Subject*: [mg84329] Re: Updating NumberPadding?
*From*: "Kevin J. McCann" <Kevin.McCann at umbc.edu>
*Date*: Wed, 19 Dec 2007 04:15:59 -0500 (EST)
*Organization*: University System of Maryland
*References*: <200712180017.TAA06282@smc.vnet.net> <fk7si4$rl8$1@smc.vnet.net>
Carl,
If you raise Pi to zero or a negative power of ten, your last form below
does not work correctly, i.e. N[Pi]10^-1 produces 0.31x10.
I agree with David that it would be REALLY nice if WRI made it easier
for us to produce nice columnar data. I know it is not easy, as the
examples below show. I know from my FORTRAN days that a lot of CPU
cycles were used on formatted input and output. Still, it would be nice.
Kevin
Carl Woll wrote:
> David Park wrote:
>
>> It would certainly be nice if WRI updated NumberPadding so that Style
>> expressions as well as Strings could be provided for the padding.
>> Specifically if one uses a font such as Times then NumberPadding -> {" ",
>> "0"} does not work properly because a single space is not the same width as
>> the digits, which do all have the same width. Using
>> Style["0",ShowContents->False] for padding on the right would probably work
>> but is not allowed.
>>
>>
>>
> If a fixed width font is out of the question, you could play with the
> NumberFormat option. For example:
>
> Column[{
> NumberForm[N@Pi, {5, 2}, NumberPadding -> {"0", "0"}],
> NumberForm[N@Pi, {5, 2}, NumberPadding -> {" ", "0"}],
> NumberForm[N@Pi, {5, 2}, NumberPadding -> {" ", "0"},
> NumberFormat -> (StringReplace[#1, " " -> ToString[Invisible["0"],
> TraditionalForm]] &)]}
> ]
>
> You will see that the first number and the last number line up properly.
> If scientific notation is possible, you will need to adjust the
> NumberFormat accordingly. For instance, the following will take care of
> scientific notation:
>
> Column[{
> NumberForm[N@Pi 10^9, {5, 2}, NumberPadding -> {"0", "0"}],
> NumberForm[N@Pi 10^9, {5, 2}, NumberPadding -> {" ", "0"},
> NumberFormat -> (Row[{StringReplace[#1, " " ->
> ToString[Invisible["0"], TraditionalForm]],
> "\[ThinSpace]\[Times]\[ThinSpace]",
> Superscript[#2, #3]}] &)]
> }]
>
> You can put an If clause on the third argument, comparing it to "", to
> cover both cases.
>
> Carl Woll
> Wolfram Research
>
--
Kevin J. McCann
Research Associate Professor
JCET/Physics
Physics Building
University of Maryland, Baltimore County
1000 Hilltop Circle
Baltimore, MD 21250
Prev by Date:
**Re: disable "disable dynamic updating?"?**
Next by Date:
**Re: LinearSolve[m, b] is not equivalent to LinearSolve[m][b]**
Previous by thread:
**Re: Updating NumberPadding?**
Next by thread:
**Re: Updating NumberPadding?**
| |