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Delete Bottom Elevation

The Delete Bottom Elevation tool is used to clear the bottom elevation of the nodes within a defined area or in the gridline.

To view the bottom elevation of grid nodes, select the grid layer in the Layer Control, then RMC to display options, and select Show Labels/Bottom Elevation as shown in Extra Options. We see that the bottom elevation values of nodes are displayed. The following steps describe how to remove the bottom elevation of selected grid nodes.

  1. Select the grid layer in the Layer Control by LMC on that grid layer
  2. Set the mouse in the selection mode, hold the Shift key then LMC on two grid nodes either on the same grid line segment or different gridline segment. The grid block will be highlighted.  Next, release Shift, then RMC to show options, and select the Delete Bottom Elevation, as shown in Extra Options. As a result, the bottom elevation of nodes will be removed.
  3. To update the view of the bottom elevation of grid nodes after using the Delete Bottom Elevation, select show labels for bottom elevation as mentioned in Extra Options, the grid nodes whose bottom elevation has been removed will display as NaN labels as shown in Extra Options.


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Figure 1

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Figure 1  Show bottom elevation labels of grid nodes.


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Figure 2

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Figure 2  Delete Bottom Elevation option.



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Figure 3
Figure 3

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Figure 3  Bottom Elevation labels of grid nodes after using the Delete Bottom Elevation option.


Modify Bottom Elevation

The Modify Bottom Elevation option is used to change the bottom elevation values of nodes in the defined area. The steps to define the selected gridline or grid bock are similar to the Delete Bottom Elevation option described above. After defining the impacted area, RMC to display options, and select the Modify Bottom Elevation as shown in Extra Options. The Modify Selection form will display as shown in Extra Options. The radial options of this form are described below.

Assign a Constant Value

Add a Value To

Subtract a Value From

Multiply with a Value

Divide by a Value

Delete Selected Values



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Figure 4
Figure 4

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Figure 4 A Modify Bottom Elevation option.


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Figure 5
Figure 5

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Figure 5  Line Repulsion option.

Interpolate Elevation in I-Direction


Interpolate Elevation in J-Direction


Create XYZ Data from Block

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Figure 1


Figure 1  Grid image before applying smoothing.


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Figure 2


Figure 2  Grid image after applying smoothing.



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Figure 3


Figure 3  Line Attraction option.

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Figure 4


Figure 4 A Grid after applying the Line Attraction option.


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Figure 5


Figure 5  Line Repulsion option.

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