# Number of EOTs needed for variance explanation

### Description

The function identifies the number of modes needed to explain a certain amount of variance within the response field.

### Usage

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### Arguments

`x` |
an |

`var` |
the minimum amount of variance to be explained by the modes |

### Value

an integer denoting the number of EOTs needed to explain `var`

### Note

This is a post-hoc function. It needs an *EotStack*
created as returned by `eot`

. Depending on the potency
of the identified EOTs, it may be necessary to compute a high number of
modes in order to be able to explain a large enough part of the variance.

### Examples

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