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Re: st: Re: svmat is changing numbers - a rounding problem?


From   Kasal Roman <kasalroman@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Re: svmat is changing numbers - a rounding problem?
Date   Thu, 23 May 2013 09:35:29 +0200

double has just helped, thank you

but anyway it's strange you must have these knowledge to calculate so
simple tasks

roman

On Thu, May 23, 2013 at 9:24 AM, Nick Cox <njcoxstata@gmail.com> wrote:
> 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
> njcoxstata@gmail.com
>
> On 23 May 2013 08:12, Kasal Roman <kasalroman@gmail.com> 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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