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From |
"Joao Ricardo F. Lima" <[email protected]> |

To |
[email protected] |

Subject |
Re: st: Using foreach and two local macros |

Date |
Thu, 7 Aug 2008 02:15:12 -0300 |

Stas, really thanks for your answer. It works perfect! Best, Joao Ricardo 2008/8/7, Stas Kolenikov <[email protected]>: > forvalues k = 1/2 { > local t1 : word `k' of `test1' > local t2 : word `k' of `test2' > di `t1' + 2*`t1' + `t2'*`t2' > } > // or whatever it is that you wanted to compute > > Those things are called extended functions in Stata jargon, and are > extremely powerful at times. They are gems whose functionality is > described technically in the manuals, but it takes a few examples to > really start appreciating them. > > On Wed, Aug 6, 2008 at 11:38 PM, Joao Ricardo F. Lima > <[email protected]> wrote: > > Dear Statalisters, > > > > I'm trying to use the foreach command, I see the FAQ, etc, but it's > > not clear to me. > > > > One first simple example, I can do > > > > local test1 "1 2" > > foreach z of local test1 { > > di `z'+2*`z' > > } > > > > The result is > > > > . local test1 "1 2" > > > > . foreach z of local test1 { > > 2. di `z'+2*`z' > > 3. } > > 3 > > 6 > > > > Stata is doing 1+2*1=3; 2+2*2=6; > > > > However, if I have two local macros, I can do > > > > local test1 "1 2" > > local test2 "3 4" > > foreach z of local test1 { > > foreach h of local test2 { > > di `z'+2*`z'+`h' > > } > > } > > > > and see these results > > > > ... > > . foreach z of local test1 { > > 2. foreach h of local test2 { > > 3. di `z'+2*`z'+`h' > > 4. } > > 5. } > > 6 > > 7 > > 9 > > 10 > > > > or > > > > 1+2*1+3=6; > > 1+2*1+4=7; > > 2+2*2+3=9; > > 2+2*2+4=10... the 4 possible combinations. > > > > My question is how can I do a loop to work with two local macros and > > get, for example, only these two combinations: > > > > local test1 "1 2" > > local test2 "3 4" > > > > foreach...??? > > > > di 1+2*1+3 > > di 2+2*2+4 > > > > Sorry this question, thanks for the help. > > > > Best regards, > > > > Joao Ricardo > > > > -- > > ------------------------------- > > Joao Ricardo Lima > > Professor > > UFPB-CCA-DCFS > > +553138923914 > > ------------------------------- > > * > > * For searches and help try: > > * http://www.stata.com/help.cgi?search > > * http://www.stata.com/support/statalist/faq > > * http://www.ats.ucla.edu/stat/stata/ > > > > > > -- > Stas Kolenikov, also found at http://stas.kolenikov.name > Small print: I use this email account for mailing lists only. > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ > -- ------------------------------- Joao Ricardo Lima Professor UFPB-CCA-DCFS +553138923914 ------------------------------- * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**References**:**st: Using foreach and two local macros***From:*"Joao Ricardo F. Lima" <[email protected]>

**Re: st: Using foreach and two local macros***From:*"Stas Kolenikov" <[email protected]>

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