[ncl-talk] Plot wavelet with "Months" as X-axis

[Dennis Shea]

You will have to put in the correct numbers. ncl-talk has no idea to
what the 'time' axis refers refers


 res at tmYLMode     = "Explicit"
 res at tmYLValues   = (/3000,3500,4000,.....,8000/)
 res at tmYLLabels   = (/"Jan","Feb",.....,"Dec"/)


On Thu, Jan 12, 2017 at 11:16 PM, Lyndon Mark Olaguera <
olagueralyndonmark429 at gmail.com> wrote:

> Hi All,
>
> I'm plotting a wavelet based from this example https://www.ncl.ucar.
> edu/Document/Functions/Built-in/wavelet.shtml
>
> Is there an easy way to make the x-axis in terms of months (Jan to Dec)?
>
> Here's my code:
>
> begin
> ;************************************
> ; create pointer to file and read in variables
> ;************************************
>   f    = addfile ("hpass_SCS.nc","r")
>   prec  = f->PREC(:,0,0)                     ; one value/year
>   time = prec&time
>   N    = dimsizes(time)
> ;************************************
> ; Remove mean and linear trend (recommended, not required)
> ; Missing values are not allowed.
> ;************************************
>   prec  = dtrend(prec,False)
> ;************************************
> ; compute wavelet (Missing values not allowed due to use of FFT)
> ;************************************
>   mother  = 0
>   param   = 6.0
>   dt      = 1.
>   s0      = 0.25
>   dj      = 0.25
>   jtot    = 44
>   npad    = N
>   nadof   = new(2,float)
>   noise   = 1
>   siglvl  = .05
>   isigtest= 1
>
>   w = wavelet(prec,mother,dt,param,s0,dj,jtot,npad,noise,
> isigtest,siglvl,nadof)
> ;************************************
> ; create coodinate arrays for plot
> ;************************************
>   power            = onedtond(w at power,(/jtot,N/))
>   power!0          = "period"                        ; Y axis
>   power&period     = w at period
>
>   power!1          = "time"                          ; X axis
>   power&time       = time
>
>   power at long_name  = "Power Spectrum"
>   power at units      = "unit^2"
>
>
> ;************************************
> ; initial resource settings
> ;************************************
>   wks = gsn_open_wks("png","wavelet")             ; send graphics to PNG
> file
>   res                     = True                  ; plot mods desired
>   res at cnFillOn            = True                  ; turn on color
>   res at cnFillPalette       = "BlAqGrYeOrReVi200"   ; set color map
>   res at cnFillMode          = "RasterFill"          ; turn on raster mode
>   res at cnRasterSmoothingOn = True                  ; turn on raster
> smoothing
>   res at cnLinesOn           = False                 ; turn off contour lines
>   res at lbOrientation       = "Vertical"            ; vertical label bar
>   res at trYReverse          = True                  ; reverse y-axis
>   ;res at tmLabelAutoStride   = True
>   res at cnLevelSelectionMode = "ManualLevels"       ; set manual contour
> levels
>   res at cnMinLevelValF       = 0.0                  ; set min contour level
>   res at gsnLeftString       = "Wavelet Power"
>   plot = gsn_csm_contour(wks,power({0:120},:),res)
> end
>
>
> I'll appreciate any help.
>
> Many thanks,
>
>
>
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