translateSPSS2R (version 1.0.0)

xpssDoIf: Creates a DO IF - END IF subset

Description

R implementation of the SPSS DO IF argument.

Usage

xpssDoIf(x, cond = NULL)

Arguments

x

a (non-empty) data.frame or input data of class "xpssFrame".

cond

logical expression indicating the condition for subsetting.

Value

Output is a subset of the actual dataset under the condition of the logical expression.

Details

xpssDoIf selects cases for analysis based on one or more logical conditions. The conditions to select cases are specified in a logical expression. These logical expressions can contain relational operators, logical operators and arithmetic operations. xpssDoIf creates a subset of the actual dataset, without deleting the excluded variables, respectively without deleting the excluded values.

If its needed to modify more than one subset, every following subset get selected by xpssElseIf. xpssDoIf is working similar to xpssElseIf, the only difference is that xpssDoIf has to initiate the subsetting.

The data is subsetted until xpssEndIf restores the excluded data. All changes made at the subsetted data will be taken over, the excluded data will remain untouched! As noted before, those cases are not actually deleted and will be available after xpssEndIf restores the excluded data.

In a different way to SPSS. Not only data management functions like xpssRecode can be used within xpssDoIf, it is possible to use statistical and descriptiv functions like xpssFrequencies too. NOTE: For temporary case selection, specify xpssTemporary before xpssDoIf.

See Also

Related Functions xpssElseIf, xpssEndIf, xpssFilter, xpssSelectIf, xpssTemporary

Examples

data(fromXPSS)

temp <- xpssDoIf(x=fromXPSS, cond = "V3 == 1")

temp <- xpssRecode(x=temp,variables="V5",rec="lo:78 = 1; else = 2")

temp <- xpssEndIf(x=temp)