Use same plot scaling for all algorithms. Fix one bug when retrieving the "threshold" cmdline argument.
Use same plot scaling for all algorithms.
Fix one bug when retrieving the "threshold" cmdline argument.

svn path=/trunk/; revision=4507

FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot