I've tried placing a legend using the loc = (x,y) .. and the legend is moved where I want it. the problem is, when I add new lines to the plot.. the legend grows, but upwards.. so the lower left point of the legend box is constant.. but that's not the logical way for a legend box to grow.. shouldn't it grow downwards, just like when I use the standard loc = 1 (upper right position) .

Is there a way to change this behaviour?