“factor-variable and time-series operators not allowed”意味着在合并操作中,你可能使用了因子变量(factor variables)或时间序列操作符(time-series operators),而Stata不允许在merge命令中使用这些。 检查merge命令的语法: 确保你的merge命令中没有使用到任何因子变量(如i.var)或时间序列操作符(如L.、F.等)。
aRemember to take medicoine and wear more clothes when it'scold 记住采取medicoine和穿更多衣裳,当it'scold[translate] a半饥半饱 Half hungry and half full[translate] aSpatial operators and time-series analysis will be easy to express 空间操作员和时间序列分析将是容易表达[translate]...
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predict lpacf, resid 可这样依然会提示“factor-variable and time-series operators not allowed”。 你可能还会想,咦,是括号不对吧,再加上括号... 这样继续肝下去身体还要不要啦?! 正确的方法是,通过先生成对应的log运算变量,再运行命令。 clear use "/Users/mac/Desktop/数据/计算/基础指标完成" tsset id...
after i set the time variable (eg, > tsset time). I don't know why stata do not permit timeseries > operators on string variables, it seems not reasonable for the > lag or lead operators, beyond the difference operators > > i wonder if there is some sort way so that i can use ...
We present a toolbox to compute and extract information from inhomogeneous (i.e. unequally spaced) time series. The toolbox contains a large set of operators, mapping from the space of inhomogeneous time series to itself. These operators are computationally efficient (time and memory-wise) and ...
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...
Dear Statalisters: I'm running what would seem to be a straightforward stratified stcox regression, but I get the error message "time series operators not allowed" when I include the strata() option. The strata variable I'm using is not time-varying, but is coded with values 0, 1, 2...
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