RQDA (version 0.1-8)

GetAttr: Attributes

Description

Get the attributes of case or file.

Usage

GetAttr(type = c("case", "file"),attrs = svalue(.rqda$.AttrNamesWidget))

ShowSubset(x,...)

Arguments

type

Type of attributes.

attrs

character vector, subset of attributes to retrieve.

x

an object from GetAttr

...

Not used currently.

Value

• For GetAttr, when type is "case", it is a data frame with class of "CaseAttr"; when type is "file", it is a data frame with class of "FileAttr". For ShowSubset, no value is returned, the side-effect is to change the file list or case list in respective widget.

Details

You can add and modify the attributes of cases or files. GetAttr returns this attributes as a data frame. Sometimes, you only want to show a subset of files or cases according to their attributes. You can do the subset operation of the result from GetAttr and pass it to ShowSubset.

Examples

attr <- GetAttr("case")
ShowSubset(subset(attr,attribute1==1)) ## assuming there is a variable
named atttribute1 in attr.