v2.2

This release includes two new functionalities:

1. Ability to save/load existing runs (i.e., in order to save/retrieve the 0-mass line);
2. Sensitivity analysis of the 0-mass line.

Save/load existing runs

The main GUI contains a new menu bar at the top. Upon completing a new analysis (i.e. after adding the 0-mass line), the File > Save menu becomes available, which offers to save the run as a .mat file. Similarly, this run can then be loaded using the File > Load menu.

Sensitivity analysis

This option offers to test the sensitivity of the computed TGSD to the distance at which the 0-mass line is drawn. Upon completing a new run, (i.e. after adding the 0-mass line), the Tools > Sensitivity to the 0-mass line menu becomes available. This option varies the distance of the points defining the 0-mass line defined by the user radially from the vent and recomputes the median and sigma of the total grain size distribution. This option requires the definition of the vent's latitude and longitude as well as a vector comprising min, max and step, where:

• min represents the minimum of the range of the sensitivity test, where a value of -0.2 means a reduction of 20% of the distance of each point;
• max represents the maximum of the range of the sensitivity test, where a value of 1means a doubling of the distance of each point;
• step is the interval between min and max.

As a result, a table is displayed in Matlab's prompt showing the median and the sigma of the TGSD for each increment of the sensitivity test.