This icon generates plots of spectra as a function of Legendre polynomial order.
The macro language equivalents are spec_graph() and spec_contour().
The Spectra Editor
The Spectra editor belongs to a type of editor known as family editor which allows related sets of input specifications to be grouped in the same icon editor, each in its own tabbed pane. The available working input panes are :
Spec Graph - To plot a graph of log/linear amplitude against log/linear n, where n is the Legendre polynomial order
Spec Contour (not available yet) - To plot a map contour plot of amplitude against wave number and forecast length
To operate with this icon first you need to select which output you want to produce by clicking the tab of the corresponding pane. Each input pane contains a different set of parameters, with some in common.
Data
Specifies the data required for the application. The assist button provides a tailor made MARS request in case you need some guidance in the data specification.
Diurnal Cycle
Specifies whether to subtract the diurnal cycle. Yes to subtract, No otherwise.
Truncation
Specifies the highest wave number in spectra plots.
Smoothing
Specifies whether to smooth the plot curve(s). Yes to smooth, No otherwise.
Tension
Specifies the smoothing interpolation. Only Spline is currently available.