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RE: st: Matrix help
"Nick Cox" <email@example.com>
RE: st: Matrix help
Wed, 21 May 2008 14:38:26 +0100
Following the link at the bottom of the help to -help matmacfunc- leads
you to the answer you seek.
sysuse auto, clear
regress mpg weight price
local rownames : rownames e(V)
Data Analytics Corp.
set and reset the names? I want to retrieve them and use them as a
variable in a new matrix that I want to append to yet another matrix.
Nick Cox wrote:
> . help matrix rownames
> Data Analytics Corp.
> I used the mat_rapp command this morning - worked perfectly, and saved
> me time. I have another question, if I may. How do you retrieve the
> row names and use them in the matrix M=J(n,m,value) command? Any
> examples of retrieving the names from, say, e(TR)?
> Sergiy Radyakin wrote:
>> matrix M=J(n,m,value) will create a matrix size nxm filled with value
>> you will need it to create the column identifying source.
>> mat_capp M : M1 M2 will stitch two matrices together taking columns
>> from M1 then from M2 and storing them in M. You will need it to put
>> the id-column into your matrices
>> mat_rapp M : M1 M2 will stitch two matrices together taking rows from
>> M1 them from M2 and storing them in M. . You will need it to combine
>> e(TR) and e(TC).
>> net search matrix save
>> will return a number of commands to export matrices. choose one that
>> produces output in a suitable format.
>> On 5/20/08, Data Analytics Corp. <firstname.lastname@example.org> wrote:
>>> I just ran a simple correspondence analysis and I would now like to
>>> the coordinates to another program In particular, I'd like to stack
> the two
>>> matrices of coordinates contained in e(TR) (which is R x J) and
>>> is C x J) into one matrix, add a column identifying the source (with
>>> say, a 1 for e(TR) and 2 for e(TC)), resulting in an (R + C) x (j
>>> matrix, and then export the matrix, with rownames, to an ASCII
>>> comma-separated file. Can this be done and how?
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