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MathGroup Archive 2006

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Re: Re: SetAccuracy formatting question


If one wants to print a number with two digits to the right
of the decimal point, try

In[3]:=
   NumberForm[0.001,{3,2}]

Out[3]//NumberForm=
   0.00


Using ExponentFunction to get around the 0. 10^-n  output is mixing
two different notations.
SetAccuracy generates a zero with 3 digits accuracy, but the default
format for printing such a thing is to say it is approximately zero
in the 3rd digit.

In[1]:=
  SetAccuracy[0.001,3]

Out[1]=
      -3
0. 10

The internal form of the above output cell is (value first, then the
printed form):

Out[1]=
Cell[OutputFormData["\<\
0``3.\
\>", "\<\
      -3
0. 10\
\>"], "Output",
   CellLabel->"Out[1]="]


Bruce Miller
Technical Support
Wolfram Research, Inc.
support at wolfram.com
http://support.wolfram.com/


On Jun 18, 2006, at 11:01 PM, Chris Chiasson wrote:

> From reading the help file, it appears the NumberForm function is not
> obeying it's help browser description. Normally, setting the
> ExponentFunction option of NumberForm to Function[Null] makes it print
> every number without scientific notation. That does not work on your
> number. I suggest filing a bug report.
>
> On 6/18/06, kalymereau at yahoo.fr <kalymereau at yahoo.fr> wrote:
>> Hi Group
>>
>> With SetAccuracy[0.5,3] I get 0.50, which is what I want
>>
>> However with SetAccuracy[0.001,3] I get 0 x 10^-3, whereas I would 
>> like
>> to get 0.00
>>
>> How to force the result I want ?
>>
>> Thanks !
>>
>>
>
>
> -- 
> http://chris.chiasson.name/


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