分享Stata官网：Stata15的do文件编辑可以进行列块操作。-经管之家官网！

[size=14.6667px]If you have ever entered or edited your data in a text editor, you may find it helpful to use column-mode selection. Here we show several examples using the Do-File Editor in Windows.

[size=14.6667px]One advantage of column-mode selection is that you can delete or append a variable easily if your data are in fixed format. For example, you are trying to create a dataset using the following commands.

clearinput mpg rep78 headroom trunk weight length turn displacement 22 3 2.5 11 2930 186 40 121 17 3 3.0 11 3350 173 40 258 22 . 3.0 12 2640 168 35 121 20 3 4.5 16 3250 196 40 196 15 4 4.0 20 4080 222 43 350 18 3 4.0 21 3670 218 43 231 26 . 3.0 10 2230 170 34 304 20 3 2.0 16 3280 200 42 196 16 3 3.5 17 3880 207 43 231 19 3 3.5 13 3400 200 42 231 14 3 4.0 20 4330 221 44 425 14 2 3.5 16 3900 204 43 350 end

[size=14.6667px]Now you want to modify your code to exclude the variable weight. If you use Windows, you can hold the Alt key and select the corresponding text, as shown in Figure 1.

[size=14.6667px]http://www.stata.com/support/faqs/data-management/column-selection-in-do-file-editor/img/align1.png

Figure 1

[size=14.6667px]Then, you can drop the selected part by clicking on the Delete key.

[size=14.6667px]Assume now that you want to add a string variable unit with content “miles per gallon” next to the variable mpg. You can hold the Alt key and drag one vertical line on the right side of mpg observations, as shown in Figure 2.

[size=14.6667px]http://www.stata.com/support/faqs/data-management/column-selection-in-do-file-editor/img/align2.png

Figure 2

[size=14.6667px]With this selected, you type “mile per gallon”. You will see that this text is inserted in each selected row, as shown in Figure 3.

[size=14.6667px]http://www.stata.com/support/faqs/data-management/column-selection-in-do-file-editor/img/align3.png

Figure 3

[size=14.6667px]A single click in any place disables column-mode selection.

[size=14.6667px]Copying and pasting a rectangle of data is very convenient with column-mode selection. Assume that you want to move the variable turn to the first column. You can first select the corresponding text just as we did before and right-click to cut it.

[size=14.6667px]http://www.stata.com/support/faqs/data-management/column-selection-in-do-file-editor/img/align4.png

Figure 4

[size=14.6667px]Then, you move your pointer to the upper-left corner where you want to paste the data and right-click to paste. You will see the content of the variable turnhas been moved to the first place on the left side.

[size=14.6667px]http://www.stata.com/support/faqs/data-management/column-selection-in-do-file-editor/img/align5.png

Figure 5

[size=14.6667px]As we mentioned in the beginning of the FAQ, this keyboard shortcut varies across different operating systems. You can follow the instruction for your operating system to perform these types of edits using column-mode selection.

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