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.
Doctors classify leukemia based on its speed of progression and the type of cells involved. The first type of classification is by how fast the leukemia progresses: 1  Acute leukemia. 2  In acute leukemia, the abnormal blood cells are immature blood cells (blasts). This is the most common type of leukemia in young children. 2  ALL can also occur in adults. 3  Acute myelogenous leukemia (AML). 4  AML is a common type of leukemia. 5  It occurs in children and adults. 6  AML is the most common type of acute leukemia in adults. 7  Chronic lymphocytic leukemia (CLL).