问题

我在Stata中将零值更改为缺失值时遇到了问题。当我尝试更改时，出现以下内容：

replace Political_spectrum= . if Political_spectrum== 0
(0 real changes made)

问题是什么？

英文:

I have a problem with changing zeros to missing values in Stata. When I try to change it this comes up:

replace Political_spectrum= . if Political_spectrum== 0
(0 real changes made)

What is the problem?

答案1

得分: 3

将Political_spectrum的缺失值替换为0

英文:

replace Political_spectrum = 0 if missing(Political_spectrum)

得分: 0

To check on missing values, you can go:

tabulate Political_spectrum, missing

and if necessary:

tabulate Political_spectrum, missing nolabel

as extended missing values .a to .z may be present and may be under a value label.

英文:

To check on missing values, you can go

tabulate Political_spectrum, missing

and if necessary

tabulate Political_spectrum, missing nolabel

as extended missing values .a to .z may be present and may be under a value label.

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