Thank you for your response. I apologize for cross posting. I will try the
way you suggested. Thanks again.
On Mon, Nov 10, 2014 at 11:08 AM, Michael Dewey
wrote:
>
>
> On 10/11/2014 14:20, huang jialin wrote:
>
>> Hi,
>>
>> I am planning to use BHHR method to cond
Hi,
I am planning to use BHHR method to conduct a meta-analysis, including
calculation of a summary effect size and subgroup analysis. Meanwhile, I
need to draw a trim-and-fill plot of all the effect sizes. However, MAd
package cannot achieve the goal, while meta and metafor do. But it seems
meta
t; #Covariance matrix
> cov(A)
>
> > cov(A)
> a b
> a 2.8529990 0.7481056
> b 0.7481056 1.3910519
>
> By the way, the covariance of two scalars will be zero, since the scalars
> are constants.
>
>
> I hope this helps.
>
> Sincerely yo
w us some of your actual data.
>
> ** **
>
> Of course, if a and b1 are really scalars, I donât think there is such a
> thing as the covariance between two scalars
>
> ** **
>
> ** **
>
> * *
>
> ** **
>
> *From:* huang jialin [mailto:huangps..
ect.org]
> On
> > Behalf Of huang jialin
> > Sent: Monday, March 12, 2012 11:43 AM
> > To: r-help@r-project.org
> > Subject: [R] how to calculate a variance and covariance matrix for a
> vector
> >
> > Hello,
> >
> > I have a vector {a, b1, b2, b3
Hello,
I have a vector {a, b1, b2, b3, b4}. How can I calculate the following
matrix:
var(a) cov(a, b1) cov(a, b2) cov(a, b3) cov(a, b4)
cov(a, b1) var(b1) cov(a, b2) cov(a, b3) cov(a, b4)
...
...
cov(a, b1) cov(a, b2) cov(a, b3) cov(a, b4) var(b4)
I would very appreciate your inputs.
Hi Thomas,
I found a package called Rprofmem(). Is it the one you are referring to?
Thanks.
Sincerely,
Jialin Huang
On Mon, Mar 5, 2012 at 1:34 PM, Thomas Lumley wrote:
> On Tue, Mar 6, 2012 at 7:14 AM, jim holtman wrote:
> > Learn some basic debugging for R. There are several functions (d
hints above to
> trap when the error occurs so you can trace down what is causing it.
>
> On Mon, Mar 5, 2012 at 12:22 PM, David Winsemius
> wrote:
> >
> > On Mar 5, 2012, at 10:23 AM, huang jialin wrote:
> >
> >> Hello,
> >>
> >> I am runni
Hello,
I am running a simulation on an old computer with memory of 512M. I
constantly received a warning of "cannot allocate a vector of ...". How can
I identify the matrix causing the problem? Is there any way to fix this
issue?
I would very appreciate your inputs. Thank you very much.
Sincerel
Hi All,
I am a beginner in R, and I am planning to learn it by finishing a project.
The simulation involves in multiple criteria. Specifically, it is based on
Graded Response Model according to IRT. Also, it needs to generate multiple
datasets which fit different levels of criteria, like multiple
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