Scalar

[Flavien Coukan]

Hi everyone, I'm fairly new to the use of scalar and I'm having some issue getting it to work: I'm trying to use the results from my last "total" command in my new command in order to automate some calculation, but the scalar I created seem to be blank and I don't understand why. Any idea why that is?

[Rich Goldstein]

there is no such returned value from the -total- command as "r(sum)" - rather, all results are returned in the matrix "r(table)"; try the following:

. sysuse auto
(1978 automobile data)
r; t=0.01 14:40:51

. total price if for

Total estimation                            Number of obs = 22

--------------------------------------------------------------
             |      Total   Std. err.     [95% conf. interval]
-------------+------------------------------------------------
       price |     140463   12297.87      114888.2    166037.8
--------------------------------------------------------------

. scalar z=r(table)[1,1]

. di z
140463

[Flavien Coukan]

Thank you! That worked exactly how I wanted!

[Brent Hill]

Just a couple other things:

• return list and ereturn list are useful little commands that show what macros, scalars, matrices, and functions are presently stored in working memory.
• You don't need to put scalar names in macro delimiters (simply x rather than `x').