| split-methods {hyperSpec} | R Documentation |
split divides the hyperSpec object into a list of
hyperSpec objects according to the groups given by f.
## S4 method for signature 'hyperSpec':
split(x, f, drop = TRUE,
short = NULL, user = NULL, date = NULL)
x |
the hyperSpec object |
f |
a factor giving the grouping (or a variable that can be
converted into a factor by as.factor) |
drop |
if TRUE, levels off that do not occur are
dropped. |
short, user, date |
handed to logentry |
The hyperSpec objects in the list may be bound together again
by bind ("r", list_of_hyperSpec_objects).
A list of hyperSpec objects.
C. Beleites
dist <- pearson.dist (chondro[[]]) dend <- hclust (dist, method = "ward") z <- cutree (dend, h = 0.15) clusters <- split (chondro, z) length (clusters) # difference in cluster mean spectra plot (apply (clusters[[2]], 2, mean) - apply (clusters[[1]], 2, mean))