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...
是现有变量延伸,从分类变量(categorical variable)中生成虚拟变量,分类变量间交乘项、分类变量与连续变量间交乘项、连续变量间交乘项。 2.应用 gen black = 2.race //2.race是判断语句,判断race变量的取值是否为2,若是则返回1到black中,若不是则返回0。 reg wage i.race#i.occupation //分类变量与分类变量...
You can watch a demonstration of these commands by clicking on the links to the YouTube videos below. You can read more about factor-variable notation by clicking on the links to the Stata manual entries below. See it in action WatchIntroduction to factor variables in Stata, part 1: The ...
Stata handles factor (categorical) variables elegantly. You can prefix a variable withi.to specify indicators for each level (category) of the variable. You can put a#between two variables to create an interaction–indicators for each combination of the categories of the variables. You can put#...
对于本质上是数值型的分类变量,是可以直接放入Stata的回归模型的。不过放入之前,需要加上i.,表示转换为“因子变量,fv,factorial variable”。关于i.和c.的因子型变量的说明,请 help fvvarlist . reg income i.gender Source | SS df MS Number of obs = 5 ...
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...
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...
Fast Stata commands for large datasets stata factor merge collapse data-manipulation mata egen Updated Aug 21, 2023 Stata ladjs / dotenv-parse-variables Star 124 Code Issues Pull requests Parse dotenv files for Boolean, Array, and Number variable types, built for Lad config dotenv environm...
用stata作factor analysis
如果直接复制作者提供的命令,变量名对不上,stata会提示(111)“variable log_y not found”。你立马会想调整式中的变量名,在公式中“log_”后面相应位置改成的变量,就像这样: prodest log_y, method(lp) free(log_L log_L2) proxy(log_M) state(log_k) valueadded acf id(id) t(year) reps(50) ...