# interpolate

From e1071 v1.7-3
by David Meyer

##### Interpolate Values of Array

For each row in matrix `x`

, the hypercube of `a`

containing
this point is searched. The corners of the hypercube are
linearly interpolated. By default, `dimnames(a)`

is taken to
contain the coordinate values for each point in `a`

. This can be
overridden using `adims`

. If `method=="constant"`

, the value
of the ``lower left'' corner of the hypercube is returned.

- Keywords
- multivariate, arith

##### Usage

```
interpolate(x, a, adims=lapply(dimnames(a), as.numeric),
method="linear")
```

##### Arguments

- x
Matrix of values at which interpolation shall take place.

- a
Array of arbitrary dimension.

- adims
List of the same structure as

`dimnames(a)`

.- method
Interpolation method, one of

`"linear"`

or`"constant"`

.

##### See Also

##### Examples

```
# NOT RUN {
x <- seq(0,3,0.2)
z <- outer(x,x, function(x,y) sin(x*y))
dimnames(z) <- list(x,x)
sin(1.1*2.1)
interpolate(c(1.1, 2.1),z)
# }
```

*Documentation reproduced from package e1071, version 1.7-3, License: GPL-2 | GPL-3*

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