add_attr_roc: Add ROC attribute
In vicstefanou/ViSCA: Cell-Movie Analysis and Visualization

Description Usage Arguments Details Value See Also

Calculates the instantaneous Rate Of Change (ROC) of a numeric attribute of a lineage tree. The ROC is calculated for each cell in the tree and can be positive or negative.

1	add_attr_roc(LT, attr, norm = TRUE, frameR)

`LT`	The connected lineage tree, an object of class `"igraph"`.
`attr`	The name of the attribute in the `LT`, a character string. It can be any numeric attribute, as returned from `get_attr_names`, except for `"colony"`, `"generation"`, `"frame"` and `"age"`.
`norm`	A logical value (`TRUE` or `FALSE`) indicating the type of the ROC that will be calculated. When the default value `TRUE` is used, ROC is normalized and represents the percentage of change relative to the previous frame. When value `FALSE` is used, ROC represents the change per hour.
`frameR`	Frame rate of the movie in frames per minute, a non-zero positive numeric value. This argument is ignored in case `norm = FALSE`.

The calculated ROC is added as an attribute to the LT:

"d<attr>_norm", a numeric value in the range [-1, 1] in arbitrary units, when norm = TRUE
"d<attr>", a numeric value in units of attr per hour, when norm = FALSE

NA values are stored for cells that are just born as well as for cells that are not included in the analysis, as returned from get_cells.

The updated LT with the new attribute added, an object of class "igraph".

isConnected for checking if a tree is connected.

vicstefanou/ViSCA documentation built on May 31, 2019, 10:50 p.m.