# Purpose¶

The module `PartiallyEvaluateInterpolationPolynomial` partially evaluates a multidimensional, scalar interpolation polynomial.

That means that values are inserted for some of the variables and the result is a polynomial of the remaining variables.

# Tips¶

Partially evaluating a polynomial certainly reduces the number of variables. Since, by convention, the variables are always numbered consecutively and start with 0, the remaining variables (after the evaluation) are likely to change their numbers.

However, their order is never changed. That is, in the above mentioned example, if the polynomial has dimension 7, the remaining variables (which are 0, 1, 4, and 6) are renumbered to be 0, 1, 2, and 3 (in this order).

# Windows¶

## Default Panel¶ # Input Fields¶

## inputPolynomial¶

`name: ``inputPolynomial``, type: ``MLBase`

# Output Fields¶

## outputPolynomial¶

`name: ``outputPolynomial``, type: ``MLBase`

# Parameter Fields¶

## Field Index¶

 `Apply`: `Trigger` `Auto apply`: `Bool` `Evaluation Mode`: `Enum` `List of Values`: `String` `List of Variables`: `String`

## Visible Fields¶

### List of Variables¶

`name: ``variableList``, type: ``String`

Sets a comma-separated list of variable numbers with respect to which the polynomial has to be evaluated.

The numbering starts with 0. Do not use the same number several times.

### List of Values¶

`name: ``valueList``, type: ``String`

Sets a comma-separated list of values that shall be inserted into the polynomial.

The way these values correspond to the variable numbers depends on the field `Evaluation Mode`.

### Evaluation Mode¶

`name: ``evalMode``, type: ``Enum``, default: ``Values for Selected Variables Only`

Defines the evaluation mode and thus how the fields `List of Values` and `List of Variables` are interpreted.

Values:

Title Name Description
Values for Selected Variables Only Values for Selected Variables Only In this case, you should supply the same number of entries to both lists. The values and variables correspond to each other by the order in which they are given. E.g., if you say 3,5,2 for the `List of Variables` and 33.0,55.7,2.345 for the `List of Values`, then 2.345 is inserted for variable number 2; 33.0 is inserted for variable number 3, and 55.7 is inserted for variable number 5. Changing the order of both lists in the same way will not alter the result.
Values for All Variables Values for All Variables In this case, you should supply as many entries to `List of Values` as the dimension of the polynomial indicates. The first value corresponds to the first variable and so on, no matter which variables actually occur in the `List of Variables` To get the same result as above, you could e.g. enter 3,5,2 as `List of Variables` and 0,9999,2.345,33.0,-42,55.7,2000 as List of Values. The values 0, 9999, -42, and 2000 will in this case be ignored. Changing the order of the `List of Variables` will not alter the result, but changing the order of the `List of Values` will.
Evalulate Non-Selected Variables Evalulate Non-Selected Variables This is very much like Values for All Variables except that you are supposed to enter the numbers of those variables with respect to which you want the polynomial to be not evaluated. To get the same result as above, you could e.g. enter 6,1,0,4 as `List of Variables` (if the dimension of your polynomial is 7) and 0,9999,2.345,33.0,-42,55.7,2000 as `List of Values` The values 0, 9999, -42, and 2000 will be ignored. Changing the order of the `List of Variables` not alter the result, but changing the order of the `List of Values` will.

### Auto apply¶

`name: ``autoApply``, type: ``Bool``, default: ``FALSE`

If checked, the module computes anew on any parameter or input change.

### Apply¶

`name: ``apply``, type: ``Trigger`

If pressed, the module computes anew.