[Kst] Auto incrementing list of files to graph.

[Trevor Young]

Previously, In October of last year another user asked about plotting a
growing list of files.

https://mail.kde.org/pipermail/kst/2015-October/022484.html

I have been unable to get this to work and was wondering if someone
could elaborate on this.

I have setup my real time chart which works great, but when I then try
to change the data source to the growing list of files, it complains
that all the fields have changed (completely different of course).

Thanks

Trevor