Indexing instances of consecutive zeros

I have a matrix with columns representing stream gauges and rows representing daily stream flow measurements from 1980-2010. The first column is the year , the second column # month and all other columns are unique gauges. I want to know know when consecutive no-flow days occur, and the duration of those zero flow events for each gauge. I know how to count the number of zeros in a column, but I am new to matlab, so I do not know how to locate and list out consecutive zeros. Any kind of help would be greatly appreciated!

Answer 1

[Image Analyst]

This is done by the function bwlabel() in the Image Processing Toolbox. Do you have that toolbox? Can you attach a copy of your matrix, like in a .mat file, or a text file with some code to read it in?

Of course each column in your matrix will have an answer that is a different number of events, with each event having a different number of months. So you might need to store the results in a structure array or a cell array or else just have a numerical array big enough to handle all possibilities with some special number if it's not used.