Sub-blocking a blank block model

Sub-blocks

Sub-blocks East, North, Z

If you selected Sub-blocks as the sub-blocking method, enter the number of blocks, in each direction, into which the block will be subdivided. The more sub-blocks there are, the more accurate the assignment will be - at the expense of processing speed.

Block factor

If you selected Block factor as the sub-blocking method, additional options are available:

Individual Wireframe Block Factors

If you are restricting the model with a Wireframe Set, you can choose to write block factor values for individual wireframes. Enter a Prefix that will be used to identify each wireframe block factor field.

If the Individual Wireframe Block Factors option is not selected, only the overall block factor for all wireframes is written to the output file and the calculation will be faster.

Block factor field

If you selected Block factor as the sub-blocking method, enter the name of the Block Factor field. The portion of each block that falls within each wireframe volume will be written to this field.

Clear block factor field

If you selected Block factor as the sub-blocking method, the nominated Block factor field can be cleared of all values before the function makes any assignments.

Accumulate block factors

If you selected Block factor as the sub-blocking method, the values in the Block factor field can be accumulated, for example, where a block or part of a block falls within more than one wireframe. When values in the block factor field exceed 1, it indicates the wireframes are overflowing in that block.

Use simplified factor estimation

If this check box option is selected, you can enter the number of blocks, in each direction, into which the block will be subdivided. Each block is divided into the specified number of sub-blocks before the block factor is estimated, by counting the number of subblocks within each block.

The Block Size fields must have enough precision to accurately store the sub-block data. Numerical rounding may cause block overlaps and other inconsistencies in the data.

If the block factor is not 2 or 4 or 5 or 8 or 10, then block size fields should have at least 5 decimal places, otherwise 3 decimal places.