### 5.8 ComposeMatrix

• ComposeMatrix( <[z1, z2, z3]> )
• Description: this function is used to compose the current matrix (it has effects on all the graphics elements except the axes and grids in the actual version) with the matrix <[z1, z2, z3]>. That matrix represents the analytic expression of an affine transformation, this is a three complexes list: $z1$ is the vector’s affix of the translation, $z2$ is the first column vector’s affix of the matrix of the linear part in the base (1,i), and $z3$ is the second column vector’s affix of the matrix of the linear part. For example the matrix of the identity is :[0,1,i] (this is the default matrix). (See also commands GetMatrix, SetMatrix, et IdMatrix).