Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: st: st_numscalar to pass a calculation result from Mata to Stata
From
Nick Cox <[email protected]>
To
[email protected]
Subject
Re: st: st_numscalar to pass a calculation result from Mata to Stata
Date
Fri, 29 Apr 2011 18:51:06 +0100
So, you should test whether precision has been lost by using a
non-default format such as %23.18f or %21x to display your scalar.
Nick
On Fri, Apr 29, 2011 at 6:24 PM, Amir Fekrazad <[email protected]> wrote:
> I use a Mata function to do some matrix calculation and then pass the
> result to Stata using:
> st_numscalar("varName", varValue)
>
> and in my Stata code I use:
> scalar `varName' = varName
>
> to obtain the value passed from Mata.
>
> The problem is, is seems that some precision is lost through this
> transfer. For example, while the result of the Mata function
> (displayed in Mata environment) is 202.6188514, the value passed to
> Stata (displayed in Stata environment) is 202.61885.
>
> I do not know if this is just the difference of displaying format in
> Mata or Stata, or actually some precision is lost. Any advice is
> appreciated.
>
>
*
* 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/