The Math library contains the following Utility operators:
Applies a constant value to a result table.
Inputs
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value: a space-separated string representing a scalar, vector, or tensor.
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Outputs
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table: destination table to store the constant value.
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Notes
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| • | A constant value table will return the same record for every item lookup, specified by value. |
| • | The value string must have same format as table (vector and tensor tables require multiple values). A tensor table can accept values of three or six components (representing a 2D or 3D tensor). |
| • | Multiple values are passed in a space-separated string: |
| o | The following examples show the value attribute applied to each result table type: |
| ▪ | Vector: value=”1.0 2.0 3.0” |
| ▪ | Tensor value=”1.0 2.0 3.0” (creates a 2D tensor constant value) |
| ▪ | Tensor: value=”1.0 2.0 3.0 4.0 5.0 6.0” (creates a 3D tensor constant value) |
| • | Vector and tensor constant values are defined relative to the global coordinate system. |
| • | When applying this operator to a complex value table, the following rules apply: |
| o | If the imaginary parts are omitted, they will be assigned to 0.0. |
| o | Complex vector and tensor constants follow a block format where the real parts are followed by the imaginary parts: |
| ▪ | Vector: value=”Xr Yr Zr Xi Yi Zi” |
| ▪ | Tensor: value=”XXr YYr XYr XXi YYi XYi” (creates a 2D tensor constant value) |
| ▪ | Tensor: value=”XXr YYr ZZr XYr YZr ZXr Xxi YYi ZZi XYi YZi ZXi” (creates a 3D tensor constant value) |
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Expression Builder
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Numbers in equations are converted to constant value tables. Vector and tensor values are represented using templex style arrays: vector={X,Y,Z}, tensor={XX,YY,XY}, etc. Complex values use the same syntax, and have sub-arrays for the real and imaginary parts: scalar = {{R},{I}}, vector={{Xr,Yr,Zr},{Xi,Yi,Zi}}, etc.
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XML Example
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<call name="Constant" value="1.0 2.0 3.0"
table="dest_tab" />
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Combines two tables together into a single table. Matching records are replaced or summed.
Inputs
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src: a value table.
with: a value table.
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Outputs
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answer: a value table.
sum_count: a scalar value table (default=”null”).
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Notes
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| • | src, with, and answer must be of the same type, binding, and format. |
| • | If sum_count is specified, it must be a scalar table bound to the same entity type as src, with, and answer. |
| • | The sum_count argument controls how values from src and with are combined into answer. |
| o | If sum_count is “null”, answer will contain records from src and with. In the case where a matching record ID exists in both src and with, answer will contain the record from with. |
| o | If sum_count is a valid scalar table, it will contain a count for each record added to answer. In the case where a matching record ID exists in both src and with, answer will contain the sum of src and with. |
| • | Combine can be used to average values between two tables by dividing answer by sum_count. |
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Expression Builder
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N/A
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XML Example
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<call name="Combine" src="src_tab" with="with_tab"
answer="ans_tab" />
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