Options and environment variables used by the 'progressr' packages

Below are environment variables and R options that are used by the progressr package. Below are all R options that are currently used by the progressr package.

WARNING: Note that the names and the default values of these options may change in future versions of the package. Please use with care until further notice.

Options for controlling progression reporting

progressr.handlers:: (function or list of functions) Zero or more progression handlers that will report on any progression updates. If empty list, progress updates are ignored. If NULL, the default (handler_txtprogressbar) progression handlers is used. The recommended way to set this option is via handlers(). (Default: NULL)

Options for controlling progression handlers

progressr.clear:

(logical) If TRUE, any output, typically visual, produced by a reporter will be cleared/removed upon completion, if possible. (Default: TRUE)

progressr.enable:

(logical) If FALSE, then progress is not reported. (Default: TRUE in interactive mode, otherwise FALSE)

progressr.enable_after:

(numeric) Delay (in seconds) before progression updates are reported. (Default: 0.0)

progressr.times:

(numeric) The maximum number of times a handler should report progression updates. If zero, then progress is not reported. (Default: +Inf)

progressr.interval:

(numeric) The minimum time (in seconds) between successive progression updates from this handler. (Default: 0.0)

progressr.intrusiveness:

(numeric) A non-negative scalar on how intrusive (disruptive) the reporter to the user. This multiplicative scalar applies to the interval and times parameters. (Default: 1.0)

progressr.intrusiveness.audio:: (numeric) intrusiveness for auditory progress handlers (Default: 5.0)
progressr.intrusiveness.file:: (numeric) intrusiveness for file-based progress handlers (Default: 5.0)
progressr.intrusiveness.gui:: (numeric) intrusiveness for graphical-user-interface progress handlers (Default: 1.0)
progressr.intrusiveness.notifier:: (numeric) intrusiveness for progress handlers that creates notifications (Default: 10.0)
progressr.intrusiveness.terminal:: (numeric) intrusiveness for progress handlers that outputs to the terminal (Default: 1.0)
progressr.intrusiveness.debug:: (numeric) intrusiveness for "debug" progress handlers (Default: 0.0)

Options for controlling how standard output and conditions are relayed

progressr.delay_conditions:: (character vector) condition classes to be captured and relayed at the end after any captured standard output is relayed. (Default: c("condition"))
progressr.delay_stdout:: (logical) If TRUE, standard output is captured and relayed at the end just before any captured conditions are relayed. (Default: TRUE)

Options for controlling interrupts

progressr.interrupts:: (logical) Controls whether interrupts should be detected or not. If FALSE, then interrupts are not detected and progress information is generated. (Default: TRUE)
progressr.delay_stdout:: (logical) If TRUE, standard output is captured and relayed at the end just before any captured conditions are relayed. (Default: TRUE)

Options for debugging progression updates

progressr.debug:: (logical) If TRUE, extensive debug messages are generated. (Default: FALSE)

Options for progressr examples and demos

progressr.demo.delay:: (numeric) Delay (in seconds) between each iteration of slow_sum(). (Default: 1.0)

Environment variables that set R options

Some of the above R progressr.* options can be set by corresponding environment variable R_PROGRESSR_* when the progressr package is loaded. For example, if R_PROGRESSR_ENABLE = "true", then option progressr.enable is set to TRUE (logical). For example, if R_PROGRESSR_ENABLE_AFTER = "2.0", then option progressr.enable_after is set to 2.0 (numeric).