Rename functions (5): decomposition

[GegznaV]

This issue complements #208 (comment).

These functions may also be renamed. But extension or modification of functionality should also be introduced.

Current name	Suggested name	Comment	Note
decomposition	as.hyperSpec(<matrix>), as_hyperSpec(<matrix>) scores2hyperSpec() loadings2hyperSpec()	Function can not only renamed bu also redefined as a method of as.hyperSpec(), as_hyperSpec(). See discussion in #144. Related #289	This issue moved to r-hyperspec/hyperSpec#55
chk.hy	is.hyperSpec(), is_hyperSpec()	1. May include the functionality of validObject() as well. 2. To keep current functionality (failure in case of non-hyperSpec object), argument fail = TRUE may be added. Default should be fail = FALSE to return FALSE.	Solved in r-hyperspec/hyperSpec#35

[bryanhanson]

Regarding chk.hy also take a look at #130 and the cross-references there-in. I think all these concerns can be fixed at once.

Regarding decomposition I authored #144 so I agree this should be renamed.

Somewhat related: decomposition will create a hyperSpec object containing loadings or scores. If loadings, then plotspc should be used, but if scores, plotc should be used. plotc also has other uses. I have not looked at this in detail, but from a user-friendliness point of view, it would be nice if plotc and plotspc were merged, made generic and employed the formula interface like plotc does to specify what should be plotted. Some careful checking of dimensions would be needed to intercept user errors like calling for a plot that does not make sense with the matrix dimensions.

[GegznaV]

This discussion moved and reopen as:

• Rename/Rework decomposition() r-hyperspec/hyperSpec#55