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From |
Rebecca Kalmus <kalmus@fas.harvard.edu> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
st: RE: RE: RE: inputting string variables in comma-separated files |

Date |
Thu, 20 May 2004 11:12:35 -0400 (EDT) |

That's helpful, thanks. However, that only works if the variable has the same number of digits for all observations. Suppose one observation is 001 and another is 0001, both of which are read into Stata as 1, and no observation has more than four digits for this variable. In that case tostring will turn this variable into 0001 for both these observations. Rebecca Kalmus ********************************************************************* I think what Nick was trying to get at is that you can recreate your lost leading zeroes by using the -format()- option in -tostring- as illustrated below. Joseph Coveney -------------------------------------------------------------------------------- . clear . set obs 5 obs was 0, now 5 . generate int x = 10^(_n - 1) // <- original comma-separated values . tostring x, generate(sx) format(%05.0f) // note the format--leading zeroes sx generated as str5 . clist, noobs x sx 1 00001 10 00010 100 00100 1000 01000 10000 10000 -------------------------------------------------------------------------------- From: Rebecca Kalmus wrote: Once I've read the comma-separated file into Stata, Stata has already read the variable as numeric. The leading zeros are already gone, so converting the variable to string using tostring doesn't help. In the past I've gotten around this problem by converting the comma-separated file to Stata format using Stat/transfer, with which I can specify that the variable should be read as string. However, it seems like there should be a more straightforward solution. Rebecca Kalmus > >From "Nick Cox" <n.j.cox@durham.ac.uk> > To <statalist@hsphsun2.harvard.edu> > Subject st: RE: inputting string variables in comma-separated files > Date Tue, 18 May 2004 19:46:19 +0100 > > A good bet in this circumstance is to make > it a string variable again using -tostring-. > Make sure you specify a format which produces > leading zeros. > > Nick > n.j.cox@durham.ac.uk > * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

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