query_internal: Operations on steps.

In lbartnik/experiment: Interactive History in R

Description

reduce_steps reduces the graph of steps according to conditions specified in dots.

remove_step removes a single step from graph of steps s and updates links accordingly.

verify_step checks whether step meets the condition defined in dots. It evaluates dots in an environment that has parent_env as its parent. Object tags are read from store.

Usage

reduce_steps(s, dots, store)

remove_step(s, id)

verify_step(step, dots, parent_env, store)

Arguments

s	Graph of steps, see experiment::graph_to_steps.
dots	Keep nodes that meet these conditions, see lazyeval::lazy_dots.
store	Object store to read tags from storage::os_read_tags.
id	Identifier of object to be removed.
step	Step to be verified.
parent_env	Evaluate dots in environment descending from this one.

Value

reduce_steps returns a reduced steps graph derived from s.

remove_step returns a reduced steps graph derived from s.

verify_step returns TRUE if step meets the criteria and FALSE otherwise.

lbartnik/experiment documentation built on May 20, 2019, 8:27 p.m.