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mjo_cross_plot

Plot coherence-squared and phase spectra as returned by mjo_cross.

Available in version 5.1.0 and later.

Prototype

load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/diagnostics_cam.ncl"

	procedure mjo_cross_plot (
		x [16][*][*] : numeric,  
		pltDir   [1] : string,   
		pltType  [1] : string,   
		pltName  [1] : string,   
		opt      [1] : logical   
	)

Arguments

x

A three dimensional array containing assorted cross spectral quantities as returned by mjo_cross. Nominally: (16,wavenumber,frequency).

pltDir

The directory to which the output will be directed. diro="./" means the current directory.

pltType

Graphical type to be generated: "png", "x11", "ps", "eps", "pdf", "ncgm".

pltName

The name associated with the generated graphic. If opt=False, the function will operate under default mode regardless of any attributes associated with the variable.

If opt=True, then the following attributes, associated with opt, may be used to alter the default behavior.

opt@maxWavePlot: If present, this specifies the min/max wavenumber to plot on the "x-axis". Default is 15.
opt@pltColorTable - If opt=True and this attribute is present, then this attribute will specify color table to be used. Currently, the color table prcp_2 is the default.
opt@txString: If present, this specifies the title given to the plot. There is no default title.
opt@gsnLeftString: If present, this specifies the left substring. Default is the "Coh^2: Symmetric" and "Coh^2: Asymmetric" .
opt@gsnCenterString: If present, this specifies the center substring. Default (not used).
opt@gsnRightString: If present, this specifies the right substring. Default is 10% and 5% critical levels. An example: "10%=0.05, 5%=0.20"
opt@gsnPaperOrientation: If present, the specified orientation will be used. Default is "landscape". The option is "portrait".
opt@pltProb: If present, all coherence-squared values less than this will not be plotted. The user may specify any of the following: 0.80, 0.85, 0.90, 0.925, 0.95, 0.99
opt@coh2Cutoff: If present, all coherence-squared values less than this will not be plotted.

Description

This implements the specifications of MJO CLIVAR for cross-spectra in wavenumber-frequency spectra. Specifically, the coherence-squared and associated phase relationships.

See Also

mjo_cross, mjo_cross, mjo_xcor_lag_season, band_pass_area_time,
band_pass_area_time_plot, band_pass_latlon_time,
band_pass_hovmueller, band_pass_hovmueller_plot,
filwgts_lanczos, wgt_areaave, wgt_areaave_Wrap,
wkSpaceTime, wkSpaceTime_cam

Examples

See Example 11 of the Madden-Julian Oscillation web page.