@文心快码stata option by() required 文心快码 在Stata中,by() 选项不是必需的。 by() 选项在Stata中用于对数据进行分组操作,但它并不是所有命令都必需的。by() 选项通常与某些命令结合使用,以便对数据集的不同子集执行相同的操作。例如,在分组计算平均值、进行回归分析等场景中,by() 选项非常有用。 然而,...
i(varlist) - use varlist as the ID variables i(varlist) is required j(varname [values]) long → wide: varname, existing variable wide → long: varname, new variable takes a variable name or a variable name and a list of values */ 示例1:快速上手 代码语言:javascript 代码运行次数:0...
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Teaching your course with Stata provides your students with tools and skills that translate to their professional lives. Stata is affordable, is easy to use and learn, and provides all the statistics, data manipulation, visualization, and reporting that your students need. ...
eigenval(eigen_matrix) is always required. It specifies the name of the eigenvalues matrix to be used in the estimation of the requested spatial regression model. This matrix must have been generated by spatwmat. model(lag|error) is always required. It specifies the type of spatial regression...
史上最全的 Stata 外部命令一览,可以在线查看帮助文件。 Source:Archive of user-written Stata packages 导言 这里汇集了截至 2015年1月1日 为止的所有 Stata 外部命令。可以在线查看每个外部命令的帮助文件。 对于感兴趣的命令,可以使用findit在 Stata 命令窗口中搜索后下载,亦可直接使用ssc install命令直接下载。
4 回归结果及解释 webuse fish, clearsummarizezip count personlivebait, inflate(child camper)The zip command allows us to model the two types of zeros. First, using the required option inflate(), we model whether a visitor fishes as a function of the number of children accompanying him or her...
现在尝试pnupt age。这次Stata并未对age变量报错,但提示 'option generate() required'。带参数的选项需要指定参数类型(integer,real,string,name)和默认(不强制)值。generate需要一个name,没有默认值。尝试pnupt age, gen(2)。Stata会抱怨说2不是一个变量名。
eigenval(eigen_matrix) is always required. It specifies the name of the eigenvalues matrix to be used in the estimation of the requested spatial regression model. This matrix must have been generated by spatwmat. model(lag|error) is always required. It specifies the type of spatial regression...
My main argument is that user-written Stata packages are thesource of learningadvanced Stata programming. In general, any program - whether it is written by Stata staff or a Stata user - intends to solve a problem or facilitate a task. While other users can get benefit from using the progr...