Constrain Block Model by IJK

This function is useful when performing cross checks to ensure that a model has exported to Whittle correctly.

Prerequisites: A block model must be open in Graphics. If a block model is not open you are prompted to open one when you run this function.

To run this function: Choose Block model > Display > Constrain by IJK, or...

• In the Function Chooser, type BM IJK CONSTRAIN, and press ENTER.

You can constrain a block model by IJK to get a block of set size at a location I blocks along the X axis, J blocks along the Y axis and K blocks along the Z axis. That is, if you chose a block size of 10, 10, 1 with IJK settings of 1, 2, 3 then (if you are using metric measurements) a block 10 m x 10 m x 1 m is returned 10 m along the X axis, 20 m along the Y axis and 3 m along the Z axis.

Note: The start position is the lower left corner of the block model.

Fields on the form

Field	Description
IJK	Three fields to input the I, J and K values for the block location.
Block Size	The size of the block you are going to constrain. Use the drop-down to select the block size.
Clear constraints	Selected: Removes all constraints previously applied to the block model before performing the IJK constraint. Cleared: All previous constrains are still in effect when the IJK constraint is applied.

Output

The block matching the size specified at the IJK location specified displays in Graphics.