The function plot input data (2D matrix, each column represents a seismic trace) in wiggle/wiggle-area. You need to provide a 2D matrix with traces in columns as the first argument. Then you are able to use var_name,var_value (as plotting function) method to customize your plotting. Matlab slows when traces are crowed so set 'skip' and 'scale' parameters to make the plotting clearer. Other options can be referred to the function help.
For speedy plotting of wiggle variable area, please refer to my latest published function cqwva.

cqwva function has better plotting quality and speed. It is faster than most FileExchange functions for the same purpose.

Link://www.tianjin-qmedu.com/matlabcentral/fileexchange/54813-cqwva--d-y-x-lvl-clip-mode--