and then executes the action if and only if the value is a number not 0. In the auto dataset,foreignis not 0 when and only when it is equal to 1, so the two conditions are satisfied by exactly the same observations. Over time this will save you many keystrokes when you are working...
tabcond(Nicholas J. Cox, SSC; Stata 7) Tabulates frequencies satisfying up to 5 specified conditions. Zero frequencies are shown explicitly. tabm(Nicholas J. Cox, SSC as part oftab_chi; Stata 7) Tabulates two or more comparable variables, in a combined two-way table of variables by value...
It can also check IDs withifandinconditions. Differences fromgsort hashsortbehaves as ifmfirstwas passed. To recover the default behavior ofgsortpass optionmlast. Differences fromduplicates gduplicatesdoes not sortexamplesorlistby default. This massively enhances performance but it might be harder to...
. count if counties==. If 1,000 were reported, I would now drop counties, and it would be as if I had never linked the two frames. Let’s assume count reported 0. Or 4, which is a small enough number that I don’t care for this demonstration. Now watch this: . generate relinc...
S456786 XTFMB: Stata module to execute Fama-MacBeth two-step panel regression by Daniel Hoechle S456785 ASSERTKY: Stata module to assert unique dataset keys by David Kantor S456784 COUNTMATCH: Stata module to count matching values for one variable in another ...
If 1,000 were reported, I would nowdrop counties, and it would be as if I had never linked the two frames. Let’s assumecountreported 0. Or 4, which is a small enough number that I don’t care for this demonstration. Now watch this: ...
S456786 XTFMB: Stata module to execute Fama-MacBeth two-step panel regression byDaniel Hoechle S456785 ASSERTKY: Stata module to assert unique dataset keys byDavid Kantor S456784 COUNTMATCH: Stata module to count matching values for one variable in another ...
1.0.4David McKenzie pointed out that under some conditions, the random seed was ignored. This is fixed with this version. 1.0.3Is the version that was published in the Stata Journal. Media Coverage Finally, a way to do easy randomization inference in Stata!(blog post by David McKenzie) ...
52、quiies a new assumption 一 the fiist-differenced mstnunents used foi the vanables in levels should not be correlated with die unobseived countiy effects Roodnian (2006) discusses how tins assumption depends on assumptions about the initial conditions. Some authors prefer to mclude in the...
7 —more— conditions 7.1 Description 7.2 set more 7.3 The more programming command 8 Error messages and return codes 8.1 Making mistakes 8.1.1 Mistakes are forgiven 8.1.2 Mistakes stop user-written programs and do-files 8.1.3 Advanced programming to tolerate errors 8.2 The return message for...