# esriNAImpedanceTransformationType

Options to specify the Location-Allocation impedance transformation type.

Value |
Description |
---|---|

esriNAITTLinear |
Distance between two points will be scaled linearly using a transformation parameter. (e.g. distance(i,j) = parameter*distance(i,j). |

esriNAITTPower |
Distance between two points will be scaled according to a power using a transformation parameter (e.g. distance(i,j) = distance(i,j)^parameter. |

esriNAITTExponential |
Distance between two points will be scaled according to an exponent using a transformation parameter (e.g. distance(i,j) = e^(parameter*distance(i,j)). |

## Remarks

The values within this enumeration are used to indicate the type
of impedance transformation to be applied while solving a
Location-Allocation problem instance. The *ImpedanceTransformation* property of the
INALocationAllocationSolver is used in conjunction with this
transformation type.

This enumeration has the following values:

- esriNAITTLinear - specifies that a linear decay should be applied
- esriNAITTPower - specifies that a power decay should be applied
- esriNAITTExponential - specifies that an exponential decay should be applied