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From |
Marie-Claire Robitaille-Blanchet <marie-claire.robitaille-blanchet@uwa.edu.au> |

To |
"statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu> |

Subject |
RE: st: RE: RE: estimate precision in MATA |

Date |
Thu, 23 Sep 2010 10:38:58 +0800 |

Thanks! -----Original Message----- From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Stas Kolenikov Sent: Wednesday, 22 September 2010 9:09 PM To: statalist@hsphsun2.harvard.edu Subject: Re: st: RE: RE: estimate precision in MATA On Wed, Sep 22, 2010 at 2:25 AM, Marie-Claire Robitaille-Blanchet <marie-claire.robitaille-blanchet@uwa.edu.au> wrote: > Let say I want to sum two variables. I can use format to increase the number of digits after the decimal point for the new variable = old_variable_1 + old_variable_2. > > I'm looking for the equivalent but when I sum matrixes in MATA. So I want to increase the number of digit after the decimal point for the new matrix I'm creating from already existing matrixes. And, if possible, I would prefer the entry in the new matrix to be in the data type: double. Mata already operates in double precision. If you need even higher precision for your computations, there are -quad*()- functions available. For each individual number, you can -printf()- it in the format you like: . mata : pi() 3.141592654 : printf("%20.18f",pi()) 3.141592653589793100 Here, of course, the trailing zeroes are wrong, but Stata may have no way of figuring out that they are. -- Stas Kolenikov, also found at http://stas.kolenikov.name Small print: I use this email account for mailing lists only. * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/ * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**References**:**st: estimate precision in MATA***From:*Marie-Claire Robitaille-Blanchet <marie-claire.robitaille-blanchet@uwa.edu.au>

**st: RE: RE: estimate precision in MATA***From:*Marie-Claire Robitaille-Blanchet <marie-claire.robitaille-blanchet@uwa.edu.au>

**Re: st: RE: RE: estimate precision in MATA***From:*Stas Kolenikov <skolenik@gmail.com>

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