SMS:Spectral Energy

Spectral Energy dialog

The Spectral Energy dialog can be accessed when the spectral coverage is active. The dialog is opened by either double-clicking on a selected node or by right-clicking on a selected point and choosing the Node Attributes command. The spectrum represents energy densities at discrete values over a range of angles and a range of frequencies for a given wave condition.

Tools

• Select Cell – Select a cell corner to view or edit the energy value.
• Pan – Pan the spectral grid.
• Zoom – Zoom in the window.
• Rotate – Rotate in the window.
• Frame – Frame, or zoom to the extents of the grid.
• Contour Options – Bring up the contour options dialog for setting the spectral grid contour display options.

Grid Options

• Create Grid – Brings up the Spectral Grid Attributes dialog followed by the Create Spectral Energy Grid dialog.
• Generate Spectra – Brings up the Generate Spectra dialog.
• Import Spectra – Brings up the Import Spectra dialog.
• Export Spectra – Brings up the Export Spectra dialog where a location can be chosen to save the spectra.

Spectral Tree Options

• Spectral Manager Tree – Select a spectrum in the tree. The selected spectra will be displayed in the Spectral Viewer. The tree’s right-click options are described below.

Grid/Spectra Right-Click Options

• Generate Spectra – Opens the Generate Spectra dialog. This option is available when the grid in the Spectral Manager Tree is right -clicked.
• Edit Spectra – Opens the Edit Spectra dialog where the Parameter Settings, Angle Settings and Spectral Parameters can be edited.
• Export Spectra – Brings up the Export Spectra dialog where a location can be chosen to save the spectra.
• Delete Grid or Delete Dataset – Deletes a grid or spectrum.
• Properties – Brings up the Spectral Grid Properties dialog. This option is available when the grid in the Spectral Manager Tree is right-clicked.
• Edit Time – Edit the time offset for the dataset.

View Options

• View – View and edit the spectral grid using a Cartesian or polar view.

Graphic Options

Information for points in the grid can be displayed in two ways:

• Selection – View the Frequency, Angle, and Energy of the selected cell corner. The Energy can be edited for the selected points.
• Cursor – View the Frequency, Angle, and Energy as the cursor moves over the grid.

2D Plot Options

• Frequency Integration Plot – Turn on to show an energy vs. frequency plot for the selected spectrum.
• Direction Integration Plot – Turn on to show a direction vs. energy plot for the selected spectrum.

Reference Time

Clicking on the Update Reference Time... button will bring up the Time Settings dialog with the following options.

• Reference Time – Specify the reference time for all datasets assigned to the node
• Time Units – Specify the units for the time offsets assigned to the datasets

The spectral energy Time Settings dialog.

Related Topics

• Create Spectral Energy Grid
• Generate Spectra
• Import Spectra
• Spectral Grid Properties
• STWAVE Menu
• CGWAVE Menu
• Cartesian Grid Module