2DV Data Extraction

Data Extraction Constituents

The form of Data Extraction assists users in defining the location of the profile and the parameters to be displayed in 2DV View as shown in Figure 1. From the Primary Group it is possible to select Model Grid, Velocities, Water Column, and others. The number of groups varies and depends on the modules simulated in the model. Once selecting a group for the Primary Group completed, a list of parameters for the selected group is displayed in the Parameter.

Figure 1. Data Extraction from 2DV View form.

The Profile Definition frame needs to be set before a profile can be extracted from EFDC. There are three options shown in Figure 1. It is possible to select a value of I to extract the active J cells along that I, or select a value of J to extract the active I cells along that J. The third option is to use a "Drape Line", which is a polyline in the same coordinate system as the LX, LY data. The I & J's along this line will be assembled, and the profile will be output along with that slice. If an I or J extraction is used, the user can scroll up and down the select a coordinate.

The Define Parameter to Plot frame requires selecting which parameters will be displayed. First, it is necessary to select the Primary Group, then select the Parameter from that group is available to choose. It is required to click the left arrow button to confirm the selection. It is possible to select more than one parameter for the plot.

The parameters selected are displayed in the Parameters to Plot frame, where the user can also remove the parameter by using the right arrow button. The user can save the current 2DV layout by clicking the Save button or load an external 2DV layout by selecting the Load button. The Up and Down buttons will change the order of the parameter in the displayed plot.

The Update button will replace the currently highlighted parameters in the Parameters to Plot frame with the currently selected parameters in Define Parameter to Plot frame.

The Properties button will open the 2DV View Properties form where the user can configure the color ramp, contour, precision, range, and other settings (Figure 2).

Figure 3 and Figure 4 is a 2DV View example for selecting the temperature of the I = 38 at a specific time.

Figure 2. 2DV View Properties.

Figure 3. Selecting parameter to 2DV View.

Figure 4. An example of 2DV View.

Data Extraction of EFDC Arrays

A new option for 2DV View has been developed to the EEMS11.3 version. It allows to view 2DV plot of parameters of EFDC arrays. To select EFDC Array's parameters are similar to other parameters described above.  Select EFDC Arrays for the Primary Group, and then select a parameter from the drop-down list as shown in Figure 5. The meaning of these parameters is described in Table 1 below. An example of 2DV View for vertical eddy viscosity is shown in Figure 6.

Figure 2. Select an EFDC Arrays Parameter.

EFDC Arrays Parameters.

Figure 6. 2DV View for AV parameter of I = 9 at a specific time.