keep_non_zero_percentage: keep features with percentage of non-zeros

In rmflight/visualizationQualityControl: Development of visualization methods for quality control

keep features with percentage of non-zeros

Description

Given a value matrix (features are rows, samples are columns), and sample classes, find those things that are not zero in at least a certain number of samples in one of the classes, and keep those features for further processing.

Usage

keep_non_zero_percentage(
  data_matrix,
  sample_classes = NULL,
  keep_num = 0.75,
  zero_value = 0,
  all = FALSE
)

Arguments

data_matrix	the matrix of values to work with
sample_classes	the classes of each sample
keep_num	what number of samples in each class need a non-zero value (see Details)
zero_value	what number represents zero values
all	is this an either / or OR does it need to be present in all?

Details

The number of samples that must be non-zero can be expressed either as a whole number (that is greater than one), or as a fraction that will be be multiplied by the number of samples in each class to get the lower limits for each of the classes.

Value

logical

rmflight/visualizationQualityControl documentation built on Feb. 18, 2024, 9:46 a.m.