Taking the logarithm of all matrix data
1. Open a Matrix editor window with the matrix of your choice (Opening matrices).
2. In the Matrix editor window toolbar, click the Apply natural logarithm symbol.
Note: If the matrix data selected contain any negative values or null, the function is cancelled. |
Tip: Alternatively, from the Matrix editor menu, choose Arithmetic operations > Apply natural logarithm. |
For each OD pair, the natural logarithm of the matrix value is taken to the base e (Eulerian number, e ≈ 2.71828183) and stored in the matrix.