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.
The major types of leukemia are: 1  Acute lymphocytic leukemia (ALL). 2  Acute myelogenous leukemia (AML). 3  Chronic lymphocytic leukemia (CLL). 4  Chronic myelogenous leukemia (CML). 5  Other types. 6  Symptoms. 7  Risk factors.he major types of leukemia are: 1  Acute lymphocytic leukemia (ALL). 2  Acute myelogenous leukemia (AML). 3  Chronic lymphocytic leukemia (CLL). 4  Chronic myelogenous leukemia (CML). 5  Other types. 6  Symptoms. 7  Risk factors.