Multiple Plots reading from datafiles

[sw.plainview]

I am trying to write a program that reads data stored in text files (CSV format) and plots these data; the user is allowed to pick how many plots/files they would like to see.  Currently, when a new file is opened, the data read from it are appended to an existing array.  However, this does not deal well with datasets of dissimilar length - if one set is shorter than another, the program will enter rows of zeros to match the length of the longer.  I saw a possible solution here (an earlier post), but this assumes that my data are all in separate 1D arrays rather than the single 2D array I am using.  Is there a way to dynamically write to an unspecified number of arrays (in a loop or something?) or a better solution?

Attached is my code along with two sample test text files.

Thanks!

[David_L]

I am confused about your code/data files.  How does the data from the text file (and therefore the array) translate to the graph?  The data in the first file is:

2,4,6
4,6,8
6,8,10
8,10,12
10,12,14

 What do the columns and rows represent?