. sysuse auto, clear . sort rep78 . by rep78: tab1 mpg price-> rep78= 1 request may not be combined with by (error occurred while loading tab1.ado) r(190); That does not work. We know, however, thatrep78has values between 1 and 5, so let us try awhileloop in a do-file...
Stata’s most obvious command for calculating moving averages is thema()function ofegen. Given an expression, it creates a #-period moving average of that expression. By default, # is taken as 3. # must be odd. However, as the manual entry indicates,egen, ma()may not be combined with...
twoway options any options other than by()documented in[G-3]twoway options byopts(byopts)affect appearance of the combined graph overlaid options Description Main overlay overlay each panel on the same graph i(varname i)use varname i as the panel ID variable t(varname t)use varname t ...
n 1 device that connects pieces of equipment that were not originally designed to be connected 适配器, 转接器(用以转接不可直接连接的器材). 2 type of plug that enables several electrical appliances to be connected to one socket 转接器(可使几个用电器连接於同一插座上的一种插头). 3 (also ada...
may not be combined with . specifies that the statistic be calculated for the first differences instead of the levels, the default. 46 xtabond postestimation — Postestimation tools for xtabond margins Description for margins estimates margins of responses for linear predictions. Menu for ...
May not be combined with jackknife. nocd suppresses calculation of CD test. For details about the CD test see LINK TO XTCD2. exponent uses xtcse2 to estimate the exponent of the cross-sectional dependence of the residuals. A value above 0.5 indicates cross-sectional dependence, see xtcse2....
andelsemustbethelastrulesspecified.elsemaynotbecombinedwithmissingornonmissing.optionsDescriptionOptionsgenerate(newvar)generatenewvarcontainingtransformedvariables;defaultistoreplaceexistingvariablesprefix(str)generatenewvariableswithstrprefixlabel(name)specifyanameforthevaluelabeldefinedbythetransformationrules...
dataset append using mydata2,generate(newv)Same as above,but do not copy value labels or notes from mydata2.dta append using mydata2,generate(newv)nolabel nonotes Only keep v1,v2,and v3from mydata2.dta append using mydata2,keep(v1v2v3)Menu Data>Combine datasets>Append datasets 1 ...
You can use else (or *) as the last clause to refer to any value not yet assigned. Alternatively, you can use missing and nonmissing to refer to unassigned missing and nonmissing values; these must be the last two clauses and cannot be combined with else. In our example we also used...
trendadds a linear unit specific trend. May not be combined withpooledtrend. pooledtrendadds a linear common trend. May not be combined withtrend. jackknifeapplies the jackknife bias correction method. May not be combined withrecursive.