在Stata中,当你遇到错误“factor-variable and time-series operators not allowed”时,这通常意味着你在某些命令中使用了不被允许的变量类型或操作符。下面是对此问题的详细解答: 1. 解释factor-variable和time-series operators的含义 Factor Variables(因子变量):在Stata中,因子变量是一种特殊的变量类型,用于表示分...
紧接着,不死心的你可能又继续想用log(y)去代替log_y,貌似可以运行的样子: prodest log(GYZJZBB) method(lp) free log(L) log(L2) proxy log(M) state log(k) valueadded acf id(id) t(year) reps(50) predict lpacf, resid 可这样依然会提示“factor-variable and time-series operators not allowe...
factor-variable and time-series operators not allow yxzdh 三年级 6 没太用过半参估计的,但是似乎xt这个是面板数据的?stata给出的例子里,都是面板数据,需要对时间进行区分,使用的格式是: xi: xtsemipar y x i.time, nonpar(z)你可以参考一下? 溪日烟尘 托儿所 1 请问楼主这种面板数据的半参数回归...
1.Sobel检验中，标准误、Z值和P值都没有（如下图），请问是什么原因？2.在另一个模型中，我想用的自变量是滞后一期值L.X，但是当我输入sgmediation Y, mv(Z) iv( L.X)时候，输出结果提示：factor-variable and time-series operators not allowed(error in option iv( ))，这种情况怎么办呢？1.几个小...
Dear Statausers, When I run this command: tsset dtt probit y l.x1 l.x2 mfx I get the following error: factor variables and time-series operators not allowed r(101); What could be the reason for no mfx for lagged variables in time-series? Or am I missing something? Any comments woul...
Why is my command not working with factor-variable syntax and/or collinear variables in Stata 11? Answer: As of Stata 11, variables are no longer dropped because of collinearity. Instead, these variables are omitted and are labeled with an “o.” operator in the column names of the resultin...
Non-integer values are not allowed in factor variables for Stata ANOVA Solution: The documented limits can be found inhelp fvvarlist. The factor-variable operators can only be applied to categorical variables that have nonnegative integers ranging from 0 to 32,740, inclusive. ...
2.在另一个模型中,我想用的自变量是滞后一期值L.X,但是当我输入sgmediation Y, mv(Z) iv( L.X)时候,输出结果提示:factor-variable and time-series operators not allowed(error in option iv( )),这种情况怎么办呢? 1.几个小时前一个学术群里面刚好在讨论这个中介效应模型,我不想回答这个中介效应检验的问...
bayes, bayesboot, bootstrap, by, collect, fmm, fp, jackknife, rolling, statsby, and svy are allowed; see [U] 11.1.10 Prefix commands. For more details, see [BAYES] bayes: tpoisson and [FMM] fmm: tpoisson. Weights are not allowed with the bootstrap prefix; see [R] bootstrap. vce...