The above *.txt files can be converted to alternative slow and fast plots of the soil profiles showing S-velocity with depth.
- One can uncomment the two plotvel() functions under the Plus and Minus Limits section of the invR1.m code. These are lines 620 and 630 of the current version of invR1.m
Running the octave program, invR1.m, with the same parameters, but now with the fast and slow plotvel() calls will display the solution surrounded by the fast and slow solutions. In some cases, there will not be much difference, but using the zoom function on Figure 2 of the octave program output can be used to see the difference.
- The other option is to use the octave program, FwdR1.m (see section 9.2.1 ), and when prompted for the model, enter either fast.txt or slow.txt (instead of model.txt) to compute these cases and their fit to the data. After the first plot, end the program with the GUI and it will generate additional plots showing both the fast or slow model and fit to the data.