在Stata中,`delete`命令用于删除数据集中的观测行或变量列。以下是`delete`命令的基本用法: 1.删除观测行: ```stata delete if condition ``` 这将删除符合指定条件的观测行。例如,删除变量"var"中值为0的观测: ```stata delete if var == 0 ``` 2.删除变量列: ```stata drop variable_list ``` 这...
drop:删除变量(Delete variables) 示例:drop x rename:重命名变量(Rename variables) 示例:rename x x_new generate:生成新变量(Generate new variables) 示例:generate x_new = x1 + x2 replace:替换变量值(Replace variable values) 示例:replace x = 0 if x < 0 recode:重编码变量值(Recode variable valu...
Yes, you can delete variables in C++. The delete keyword is used to deallocate memory that has been allocated to a single variable or array of variables. It is different than the traditional delete operator in C++ and is more restricted, so it can only delete objects that are allocated on ...
由spin-plot函数产生的,用来旋转图形的原型就是spin-proto,该原型至少需要三个维度的数据,它使用一个固定的横宽比数据,其默认的尺度类型是variable。:content-variables方法使用3个内容变量索引,前两个以常规方式使用,第三个变量是深度提示变量的索引。:resize方法将内容的原点放置于内容矩形的中间。 :redraw-content...
Stata only allows variable names up to 32 characters long. If you have very long group and/or field names, the first 32 characters could fail to uniquely identify a variable. If you run into this problem, you're usingSurveyCTO Desktopto export your data, and group names are included in ...
第二步，在stata中的preference里，把color scheme改成classic。stata出结果的框的背景会变成黑色。这样...
StataNowalso addsvariable-name autocompletion,templates,code folding enhancements, andtemporary and permanent bookmarks. Let's see it work -> Automatic backups -> User-defined keywords Automatic backups While working in the Do-file Editor, disaster strikes and a brownout occurs. We temporarily lose...
3. gen x = ( n-1)/(n-1)*(b-a)+a because the built-in variable n is 1 in the first observation, 2 in the second, and so on; see [U] 13.4 System variables ( variables). So, the first version of our program might read program rng // arguments are n a b clear set obs ...
,suite(default,mwc,avar)overrides the package chosen by reghdfe to estimate the VCE.defaultuses the default Stata computation (allows unadjusted, robust, and at most one cluster variable).mwcallows multi-way-clustering (any number of cluster variables), but without thebwandkernelsuboptions.avar...
. . Create or change contents of variable [R] mvencode . . . . . . . . . . . . . . . . . Change missing to coded missing value and vice versa [R] order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....