# discretize

Group data into bins or categories

## Syntax

## Description

returns the indices of the bins that contain the elements of
`Y`

= discretize(`X`

,`edges`

)`X`

. The `j`

th bin contains element
`X(i)`

if ```
edges(j) <= X(i) <
edges(j+1)
```

for `1 <= j < N`

, where
`N`

is the number of bins and ```
length(edges) =
N+1
```

. The last bin contains both edges such that ```
edges(N)
<= X(i) <= edges(N+1)
```

.

`[___] = discretize(___,`

returns
the corresponding element in `values`

)`values`

rather than
the bin number, using any of the previous input or output argument
combinations. For example, if `X(1)`

is in bin 5,
then `Y(1)`

is `values(5)`

rather
than `5`

. `values`

must be a vector
with length equal to the number of bins.

`[___] = discretize(___,'categorical')`

creates
a categorical array where each bin is a category. In most cases, the
default category names are of the form “`[A,B)`

”
(or “`[A,B]`

” for the last bin), where `A`

and `B`

are
consecutive bin edges. If you specify `dur`

as a
character vector, then the default category names might have special
formats. See `Y`

for a listing of the display formats.

`[___] = discretize(___,'categorical',`

,
for datetime or duration array inputs, uses the specified datetime
or duration display format in the category names of the output.`displayFormat`

)

`[___] = discretize(___,'categorical',`

also
names the categories in `categoryNames`

)`Y`

using the cell array
of character vectors, `categoryNames`

. The length
of `categoryNames`

must be equal to the number of
bins.

`[___] = discretize(___,'IncludedEdge',`

,
where `side`

)`side`

is `'left'`

or
`'right'`

, specifies whether each bin includes its right or
left bin edge. For example, if `side`

is
`'right'`

, then each bin includes the right bin edge,
except for the *first* bin which includes both edges. In this
case, the `j`

th bin contains an element `X(i)`

if `edges(j) < X(i) <= edges(j+1)`

, where ```
1 <
j <= N
```

and `N`

is the number of bins. The
first bin includes the left edge such that it contains ```
edges(1) <=
X(i) <= edges(2)
```

. The default for `side`

is
`'left'`

.

## Examples

## Input Arguments

## Output Arguments

## Tips

The behavior of

`discretize`

is similar to that of the`histcounts`

function. Use`histcounts`

to find the number of elements in each bin. On the other hand, use`discretize`

to find which bin each element belongs to (without counting).

## Extended Capabilities

## Version History

**Introduced in R2015a**