| log {geneExpression} | R Documentation |
log(expr,
base = 2.718281828459045);the function name of this api is conflict with the math log function in the R# base runtime environment: if the input data is a gene expression matrix object, then the log scale of the expression matrix will be returned, otherwise the math log of the input numeric vector will be returned.
a new expression matrix object(or a numeric vector) of the log scaled expression data;
this function may produce negative expression value if the value number is less than 1.