Determine upper class boundaries for classification of a vector with values ranging 0-1 based upon an
vector of cumulative proportions.

## Usage

`util_calc_boundaries(x, cumulative_proportions)`

## Arguments

- x
vector of data values.

- cumulative_proportions
Vector of class cumulative proportions, as generated by `w2cp`

.

## Value

Numerical vector with boundaries for matrix classification

## Examples

```
x <- matrix(runif(100,0,1),10,10)
y <- util_w2cp(c(0.5, 0.25, 0.25)) #cumulative proportion
util_calc_boundaries(x,y)
#> [1] 0.5433589 0.7556760 0.9965621
```