st: Re: generating a matrix

[Kit Baum <baum@bc.edu>]

describing are ordinary Stata variables. If you really want to repeat  
scalars 326 times, then

gen input1 = 33.12
gen input2 = 156
gen input3 = 227.8

And if you want the sum of a variable, there are a couple of ways to  
do it.

egen tot1 = total(input1)

will place the total of all values of input1 (in this case, 326 *  
33.12) in a new variable. That is a very wasteful use of memory. You  
could also do

summarize input1, meanonly
scalar tot1 = r(sum)

which would place the same total into a scalar.

Kit Baum, Boston College Economics
http://ideas.repec.org/e/pba1.html


On May 22, 2006, at 2:33 AM, Gauri wrote:


> I realised that i was not very clear with my question and my sincere
> apologies.
>
> I will try and be clear.
>
> 1. First of all, both of you are correct.  I want to generate the  
> following
> input price matrix (not vector) with 326 rows: Input1, Input2 and  
> Input3 are
> values that I have calculated elsewhere and would like to insert  
> these to
> look like
>
> input1   input2  input3
> 33.12    156      227.8
> 33.12    156      227.8
> 33.12    156      227.8
> .
> .
> .
> .
> .
> until the 326th row.
>
> So I am requesting information on how to generate this matrix.
>
> 2.  I would like to add the column values from 1 to n(=326). What  
> should I
> look for in help to generate this. This is what I would like to do
>
> Plot Area
> 1     2
> 2     10
> 3     5.5
> 4     22
> 5     3
>
> Generate Totalarea(a scalar?)=2+10+5.5+22+3=47.5
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