[ncl-talk] can not create year labels for x axis

[Dhirendra Kumar]

Hi

I am trying to plot an nc file having anomaly time series for the JJAS
season. I have tried to follow the sample scripts over the NCL web
resource, but could not succeed in getting the correct labels of time
(year) on the X axis.

Would appreciate if anybody could help...
the script is as following-

begin
 f = addfile ("std_tim_anomaly.nc", "r")      ; add file
 date  = f->time
 printVarSummary(date)
 precip= f->tp(:,0,0)
 printVarSummary(precip)

 dimDate = dimsizes(date)         ; number of dates

; convert integer YYYYMM to float

 dateF   = new (dimDate, float)
   do n=0,dimDate-1
    yyyy      = date(n)/100
    mon       = date(n)-yyyy*100
    dateF(n) = tofloat(yyyy + (mon-1)/12.)
  end do

;*********************************
; create plot
;********************************
  wks   = gsn_open_wks ("ps", "bar" ) ; send graphics to PS file
  res          = True             ; plot mods desired
  res at gsnScale = True

; these four resources allow the user to stretch the plot size, and
; decide exactly where on the page to draw it.

  res at vpXF      = 0.10            ; In page coordinates, where to start
  res at vpYF      = 0.75            ; the plot
  res at vpHeightF = 0.43            ; Changes the aspect ratio
  res at vpWidthF  = 0.85

  res at trYMinF   = -3.0            ; min value on y-axis
  res at trYMaxF   =  3.0            ; max value on y-axis

  res at tiYAxisString = "Anomalies" ; y-axis label
; this resource changes a regular line plot to a bar chart
  res at gsnXYBarChart         = True ; create bar chart
; this resource is required to get bars above and below a reference line
  res at gsnYRefLine           = 0. ; reference line
  res at gsnXYBarChart         = True            ; create bar chart
  res at gsnAboveYRefLineColor = "red"           ; above ref line fill red
  res at gsnBelowYRefLineColor = "blue"          ; below ref line fill blue
  res at gsnXYBarChartBarWidth = 24.0
 plot = gsn_csm_xy (wks,dateF(::),precip,res)
end

[image: Inline image 1]this is the plot which is being created.

Thanks in anticipation.

-- 
========================================
Dhirendra Kumar
PhD Student
School of Environmental Sciences, JNU
New Delhi (India)
Contact: +91 9910778043
Alternate email: dhirendra.cub at outlook.com
=========================================
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