fatal:XyPlotChanges: error setting overlay object view

Dear NCL users
I’m trying to xy-plotA & plotB. Individually and also when I overlay (plotA, plotB) without trXMinF and  trXMax resources it is working properly. When I set trXMinF and trXMax during their overlaying it does not work. If I not set these recourses then the lines are not starting at the initial point. Is there any resource or function available in NCL.
Thanks
kim
 **************
fatal:["MultiText.c":940]:[errno=12]
fatal:TickMarkSetValues: Could not set MultiText item values for bottom tick mark labels, cannot continue
fatal:TickMarkSetValues: A fatal error was detected while computing tick marks labels,cannot continue
fatal:PlotManagerSetValues: Error setting TickMark values
fatal:XyPlotChanges: error setting overlay object view
fatal:["MultiText.c":940]:[errno=12]
fatal:TickMarkSetValues: Could not set MultiText item values for bottom tick mark labels, cannot continue
fatal:TickMarkSetValues: A fatal error was detected while computing tick marks labels,cannot continue
fatal:XyPlotChanges: error setting overlay object view
fatal:["MultiText.c":940]:[errno=12]
fatal:TickMarkSetValues: Could not set MultiText item values for bottom tick mark labels, cannot continue
fatal:TickMarkSetValues: A fatal error was detected while computing tick marks labels,cannot continue
fatal:XyPlotChanges: error setting overlay object view
fatal:["MultiText.c":940]:[errno=12]
fatal:TickMarkSetValues: Could not set MultiText item values for bottom tick mark labels, cannot continue
fatal:TickMarkSetValues: A fatal error was detected while computing tick marks labels,cannot continue
fatal:PlotManagerSetValues: Error setting TickMark values
fatal:XyPlotChanges: error setting overlay object view

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Received on Sun Feb 21 21:57:52 2010