Description. Return the matrix obtained by converting all the variables in a data frame to numeric mode and then binding them together as the columns of a matrix. Factors and ordered factors are replaced by their internal codes.
There are four main types of leukemia â acute lymphoblastic leukemia (ALL), acute myeloid leukemia (AML), chronic lymphocytic leukemia (CLL) and chronic myeloid leukemia (CML) â as well as a number of less common types.here are four main types of leukemia â acute lymphoblastic leukemia (ALL), acute myeloid leukemia (AML), chronic lymphocytic leukemia (CLL) and chronic myeloid leukemia (CML) â as well as a number of less common types.
By considering whether leukemias are acute or chronic and whether they are myeloid or lymphocytic, they can be divided into 4 main types: 1  Acute myeloid (or myelogenous) leukemia (AML) 2  Chronic myeloid (or myelogenous) leukemia (CML) 3  Acute lymphocytic (or lymphoblastic) leukemia (ALL) 4  Chronic lymphocytic leukemia (CLL)