setting gsnYRefLine offsets X axis?

Hi all,

I am creating a panel plot with the code below. It works just fine until the gsnYRefLine is turned on in the 3rd plot. When this resource is set the x-axis is now formatted differently than the other three plots.
The reference lines are drawn properly and then deleted. Only the x-axis changes.

Am I missing something?
Thanks,

***********************************************************************************************
  wksCS=gsn_open_wks("ps",pCSname)
  csPlot=new(4,graphic)

  PIPsec=PIPEpoch-PIPEpoch(0)
  ; **Plot Rain Rate**
  resCS=True
  resCS@gsnDraw=False
  resCS@gsnFrame=False
  resCS@gsnLeftString=RR_PIP_ts@long_name
  resCS@gsnRightString=Txright
  resCS@xyLineThicknessF=2
  resCS@tiXAxisString=" "
  resCS@tiYAxisString=RR_PIP_ts@units
  resCS@vpHeightF=.2
  resCS@vpWidthF=.8
  resCS@tmXBMode="Manual"
  resCS@tmXBMinorPerMajor=4
  resCS@tmXBLabelsOn=True
  resCS@xyMarkLineMode="Markers"
  resCS@xyMarker=16
  resCS@xyMarkerSizeF=.002

  ; Set the time_axis_label resources
  resTax=True
  resTax@ttmAxis="XB"
  resTax@ttmFormat="%H:%M"
  resTax@ttmNumTicks=10
; time_axis_labels(PIPEpoch,resCS,resTax)
;***1st PLOT***
  csPlot(0)=gsn_csm_xy(wksCS,PIPsec,RR_PIP_ts(:,0),resCS)

  ; ****2nd PLOT**** - Redefine some resources
  resCS@gsnLeftString=Z_PIP@long_name
  resCS@tiYAxisString="dBZ"
  csPlot(1)=gsn_csm_xy(wksCS,PIPsec,10.*log10(Z_PIP_ts(:,0)),resCS)

  ; ****3rd PLOT**** - Redefine some resources
  resCS@gsnLeftString=PIP_W@long_name
  resCS@tiYAxisString=PIP_W@units
  resCS@gsnYRefLine=(/Wthresh,-1*Wthresh/)
  resCS@gsnYRefLineColor="gray"
  csPlot(2)=gsn_csm_xy(wksCS,PIPsec,PIP_W,resCS)
  delete([/resCS@gsnYRefLine,resCS@gsnYRefLineColor/])

  ; ****4th PLOT****
  resCS@trYMinF=0.
  resCS@trYMaxF=3.
  resCS@tmYLMode="Explicit"
  resCS@tmYLValues=(/0,1,2,3/)
  resCS@tmYLLabels=(/" ","S","C"," "/)
  resCS@gsnLeftString="A00 - black; B09 - green"
  resCS@tiYAxisString="Rain Type"
  resCS@tiXAxisString="Minutes from RCE module start"
  csPlot(3)=gsn_csm_xy(wksCS,PIPsec,A00_cs,resCS)

  ; Now overlay other 3 methods
  resCSMark=True
  resCSMark@gsMarkerIndex=16
  resCSMark@gsMarkerColor="blue"
  resCSMark@gsMarkerSizeF=.002
  mk2=gsn_add_polymarker(wksCS,csPlot(3),PIPsec,T01_cs+.25,resCSMark)
  resCSMark@gsMarkerColor="red"
  mk3=gsn_add_polymarker(wksCS,csPlot(3),PIPsec,B03_cs+.125,resCSMark)
  resCSMark@gsMarkerColor="green"
  mk4=gsn_add_polymarker(wksCS,csPlot(3),PIPsec,B09_cs-.125,resCSMark)

  ; ****Create Panel Plot*****
  presCS=True
  presCS@gsnPanelFigureStrings=(/"a)","b)","c)","d)"/)
  presCS@amJust="TopRight"
  presCS@gsnPanelYWhiteSpacePercent=3
  gsn_panel(wksCS,csPlot,(/4,1/),presCS)

  delete([/mk2,mk3,mk4,csPlot/])
***********************************************************************************************
Nick Guy, Ph.D.
NOAA National Severe Storms Laboratory
NOAA/NSSL/WRDD
120 David L. Boren Blvd.
Norman, OK 73072
(405)325-6287
nick.guy@noaa.gov

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Received on Wed Apr 3 14:51:11 2013