undoQuery {HCAExplorer} | R Documentation |
Undo one or multiple queries performed on an HCAExplorer object then return the result.
## S4 method for signature 'HCAExplorer' undoQuery(x, n = 1L)
x |
An HCAExplorer object |
n |
integer(1). The number of queries to step back from. |
An HCAExplorer object with the changes applied to it.
HCAExplorer
for the HCAExplorer class,
resetQuery
for reseting the entire query.
## Initiate an HCAExplorer Object x <- HCAExplorer() ## First we want to perform a search for certain organs. ## Display possible fields looking for organs. fields(x) ## organs can be queried with "organ". ## What values can the field "organ" have? values(x, "organ") ## Construct a query looking for projects that involve brain. x <- x %>% filter(organ == brain) x ## Now select the first two projects by row. x <- x[1:2,] x ## Finally we can remove the previous query using undoQuery(). ## search. x <- undoQuery(x, n = 1) x