Thanks Nick, but that option must be new in Stata 10.
Stata 9 has a -matname- command and also -matrix rownames-,
but both need an explicit <namelist>, not a variable name.
Ah well, one more reason to upgrade.
Keith
At 04:40 AM 11/02/2008, you wrote:
On the face of it, you should use the -rownames()- option to read in
your desired row names. -mkmat- expects numeric variables to define the
(numeric) content of the matrix. At least that is the case in Stata 10.
At this moment I don't have access to Stata 9 or a manual for 9.
Nick
[email protected]
Keith Dear
I have a dataset that contains, in part:
. list tapm min max in 1/15
+-----------------------------+
| tapm min max |
|-----------------------------|
1. | tavg 9.281472 33.19886 |
2. | tmax 14.53456 41.24549 |
3. | tmin .6966457 27.99766 |
4. | havg 1.905087 19.26358 |
5. | hmax 2.254643 23.64934 |
|-----------------------------|
6. | ravg 18.82322 95.66055 |
7. | rmax 29.75645 100 |
8. | ws .8907141 11.97882 |
9. | oavg 1.705984 52.421 |
10. | omax 5.090116 133.497 |
|-----------------------------|
11. | navg .0532477 25.27975 |
12. | nmax .1555686 81.82613 |
13. | pavg 1.754097 39.62774 |
14. | pmax 2.989739 136.7765 |
15. | o4max 3.433426 115.7704 |
+-----------------------------+
I want to save the (min, max) values in a 15x2 matrix with rownames
from variable tapm.
This doesn't work:
. mkmat tapm min max in 1/15, mat(R)
varlist: tapm: string variable not allowed
r(109);
I can get the numbers in ok:
. mkmat min max in 1/15, mat(R)
. mat list R
R[15,2]
min max
r1 9.2814722 33.19886
r2 14.534559 41.245491
r3 .69664574 27.997656
r4 1.9050874 19.26358
r5 2.2546427 23.649343
r6 18.823215 95.660553
r7 29.756449 100
r8 .89071411 11.978825
r9 1.7059844 52.421001
r10 5.090116 133.49698
r11 .05324766 25.279753
r12 .1555686 81.826134
r13 1.7540972 39.627739
r14 2.9897394 136.77647
r15 3.4334259 115.77041
But how do I get the names in? Not like this, for example:
. mat rownames R = tapm
. mat list R
R[15,2]
min max
tapm 9.2814722 33.19886
tapm 14.534559 41.245491
tapm .69664574 27.997656
tapm 1.9050874 19.26358
tapm 2.2546427 23.649343
tapm 18.823215 95.660553
tapm 29.756449 100
tapm .89071411 11.978825
tapm 1.7059844 52.421001
tapm 5.090116 133.49698
tapm .05324766 25.279753
tapm .1555686 81.826134
tapm 1.7540972 39.627739
tapm 2.9897394 136.77647
tapm 3.4334259 115.77041
I suppose I could do it with a loop that builds a macro containing
the 15 words, but am I overlooking a better way?
*
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Dr Keith B.G. Dear
Senior Fellow in Biostatistics
National Centre for Epidemiology and Population Health
Australian National University
Canberra, ACT 0200, Australia
Tel: 02 612 54865, Fax: 02 612 50740
http://nceph.anu.edu.au/Staff_Students/staff_pages/dear.php
CRICOS provider #00120C
*
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* http://www.ats.ucla.edu/stat/stata/
