ModelMuse: Assigning Values to Data Sets

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Detailed Description

In the USGS software ModelMuse, the user must assign spatially varying data to data sets, This video describes how to assign values to data sets in ModelMuse.
 

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Image Dimensions: 800 x 600

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Length: 00:03:21

Location Taken: US

Transcript

The letters "USGS" and the words "Science for a Changing World" appear in green and fade to black.
One of the most common activities in ModelMuse is assigning values to datasets.
For instance, the hydraulic conductivity in the X direction is a dataset named Kx.
If you want to assign a uniform hydraulic conductivity, you can do that in the Datasets dialog box.
Select "Data|Edit Datasets...",
Select the Kx dataset.
Then set the default formula to the value you want and click OK.
If you need spatial variation in a dataset use objects to specify the variation.
For instance, you could create a polygon object and assign a different value to cells inside the polygon.
Click "Create polygon object"...
Then click on the top, front, or side views of the model to create the polygon.
When the polygon is complete, double-click or press the Enter key on the keyboard.
The "Object Properties" dialog box will appear.
If you created a polygon, the "Set of values of enclosed cells" check box will be checked.
If you created some other type of object, the "Set values of intersected cells" checkbox will be checked.
The object typically represents a three dimensional body with a top and a bottom.
For objects drawn on the top view of the model, the top and bottom will be automatically set to be the top and bottom of the current layer group.
You can put in something else if you want.
In this case, I'm going to change the bottom to be the bottom of the middle layer.
I click the "Edit F()" button and the Formula Editor appears.
I then change the formula to be the bottom of the middle unit and click OK
I then go to the datasets    tab, and select the Kx data set.
I can enter a different value for the formula and click OK.
To check that the values have been assigned correctly, color the grid with the Kx dataset
Then use the grid values dialog box, to check the values in individual cells
Move the mouse over the grid and in the "Grid Value" dialog box, the value will appear.
Here there is a value of 0.01
here has a value of 0.001.
You can use interpolation to assign dataset values.
Another video covers interpolation.
The letters "USGS" and the words "Science for a Changing World" appear in green.