debug.view: debug.view

In ProvTools/provDebugR: A Time-Travelling Debugger

Description

debug.view displays the contents of a file or variable at a particular line of code in a separate view panel. This is best for large values like data frames and matrices.

Usage

debug.view(..., start.line = "all", script.num = "all")

Arguments

...	The variable names or file names to be queried.
start.line	The line number of the queried variables or files.
script.num	The script number of the queried variables or files.

Details

debug.view displays the contents of each file or variable queried. For snapshots or files with the file extension of .csv or .txt, the data will be loaded into the debugger environment before it is viewed. Otherwise, the data will be viewed using the system's default program for that type of file.

Value

debug.view returns a data frame containing the information that is displayed, which contains the following columns:

• name: The name of the variable or file being viewed.

• startLine: The line number the variable or file is associated with.

• scriptNum: The script number the variable or file is associated with.

• scriptName: The name of the script the variable or file is associated with.

• title: The title of the variable or file when viewed.

• notes: Will display PARTIAL if the variable is a partial snapshot, or indicate that the provenance directory or a file is not found. NA otherwise.

If there is no data to display, NULL is returned.

Examples

## Not run: 
prov.debug.run("test.R")
debug.view()
debug.view(x)
debug.view("x", y, start.line = 5, script.num = 2)

## End(Not run)

ProvTools/provDebugR documentation built on April 29, 2021, 7:22 p.m.