Macros Data Tables Arrays

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Presentation transcript:

Macros Data Tables Arrays

Macros VBA user subroutine to automate repetitive operations in excel Keyboard shortcut: fast way to make the macro run (CTRL+ «letter») Activate the macro Attach macros to a button on the Ribbon or the Quick access toolbar

Data tables To do complex sensitivity analysis One dimensional (one variable is changed) Two dimensional (two variables are changed) Put formulas on the top row and the variable we wish to vary in the column Highlight the table area Data/sensitivity analysis/ Data table Select the cell input in row or in column

Data Tables Two dimensional (two variables are changed) Upper left hand corner of the Table contains the formula Two variables we wish to vary in the adjacent column and row

Arrays, matrices Row vector, column vector, matrix Matrix operations (addition, scalar multiplication) Transpose(matrix) matrix multiplication: Mmult(matrix 1; matrix 2) Inverse of a matrix: Minverse(matrix) CTRL+SHIFT+ENTER

Solving systems of symultaneous linear equations Ax=b A matrix of coefficients x=vector of unknowns b=vector of constants