legend orientation

Hi all,
I have some minor problems with legend, but I don't find how to figure out:
- if the figure contains only one plot, the text orientation of the legend is
vertical. How can I change this?
- when plots are in '-' style without markers, the lines are not shown in
the legend, I just have text.
thanks

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Lionel Roubeyrie - lroubeyrie@...1068...
LIMAIR
http://www.limair.asso.fr