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Re: st: Re: svmat is changing numbers - a rounding problem?
From
Nick Cox <[email protected]>
To
"[email protected]" <[email protected]>
Subject
Re: st: Re: svmat is changing numbers - a rounding problem?
Date
Thu, 23 May 2013 08:24:58 +0100
You used the default of -svmat- but the full syntax is documented
svmat [type] A [, names(col|eqcol|matcol|string)]
The key detail is [type]. Click on it in the help and you will get
further information.
You need to specify a -double- or -long- type, whichever is more
appropriate for your data.
Stata puts responsibility on the user when using -generate- (which is
implicit here) to use the appropriate data type. Your data are too
large for -float-s to hold every digit accurately.
Nick
[email protected]
On 23 May 2013 08:12, Kasal Roman <[email protected]> wrote:
> Please, could you explain me why the svmat command changes numbers?
>
> just a simple example:
>
> "
> . mat A=19903011
>
> . clear
>
> . svmat A
> number of observations will be reset to 1
> Press any key to continue, or Break to abort
> obs was 0, now 1
>
> . di A1
> 19903012
> "
> Its a huge problem to me.
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