| name | - | The name of the object |
| formula | - | The R expression to be evaluated |
mxConstraint function or an objective function requires reference by name. The ‘formula’ slot is an expression containing the expression to be evaluated. These objects are operated on or related to one another using one or more operations detailed in the mxAlgebra help file. The ‘result’ slot is used to hold the results of computing the expression in the ‘formula’ slot. If the containing model has not been executed, then the ‘result’ slot will hold a 0 x 0 matrix. Otherwise the slot will store the computed value of the algebra using the final estimates of the free parameters. Slots may be referenced with the $ symbol. See the documentation for Classes and the examples in the mxAlgebra document for more information.mxAlgebra, mxMatrix, MxMatrix