SPSS宏中的变量标签 [英] Variable labels in SPSS Macro

问题描述

我是SPSS宏语法的新手，在尝试基于简单循环计数器标记变量时遇到了很多困难.这是我尝试做的事情:

I'm new to the SPSS macro syntax and had a hard time trying to label variables based on a simple loop counter. Here's what I tried to do:

define !make_indicatorvars()

  !do !i = 1 !to 10.

    !let !indicvar = !concat('indexvar_value_', !i, '_ind')

    compute !indicvar = 0.
    if(indexvar = !i) !indicvar = 1.

    variable labels !indicvar 'Indexvar has value ' + !quote(!i).
    value labels !indicvar 0 "No" 1 "Yes".

  !doend

!enddefine.

但是，当我运行此命令时，会收到以下警告:

However, when I run this, I get the following warnings:

Warning # 207 on line ... in column ... Text: ...
A '+' was found following a text string, indicating continuation, but the next non-blank character was not a quotation mark or an apostrophe.

Warning # 4465 in column ...  Text: ...
An invalid symbol appears on the VAR LABELS command where a slash was
expected.  All text through the next slash will be be ignored.

实际上，标签只有'Indexvar的值为'.

Indeed the label is then only 'Indexvar has value '.

使用在打印时开启mprint设置"后，将打印以下代码:

Upon using "set mprint on printback on", the following code was printed:

variable labels indexvar_value_1_ind 'Indexvar has value ' '1'

所以看来SPSS似乎以某种方式删除了应该将两个字符串连接在一起的"+"，但是为什么呢?

So it appears that SPSS seems to somehow remove the "+" which is supposed to concatenate the two strings, but why?

宏的其余部分工作正常，只是变量标签命令引起了问题.

The rest of the macro worked fine, it's only the variable labels command that's causing problems.

推荐答案

尝试:

variable labels !indicvar !quote(!concat('Indexvar has value ',!i)).

还请注意:

compute !indicvar = 0.
if(indexvar = !i) !indicvar = 1.

可以简化为:

compute !indicvar = (indexvar = !i).

其中COMPUTE方程的右侧求值等于TRUE的地方分配了1(一个)，否则，如果分配了FALSE的分配了0(零).以这种方式只使用一个计算，不仅减少了代码行，而且还使转换效率更高/运行起来更快.

Where the right hand side of the COMPUTE equation evaluates to equal TRUE a 1 (one) is assigned else if FALSE a 0 (zero) is assigned. Using just a single compute in this way not only reduce the lines of code, it will also make the transformations more efficient/quicker to run.

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