# ee.Array.exp

On an element-wise basis, computes the Euler's number e raised to the power of the input.

<br />

| Usage | Returns |
|---|---|
| `Array.exp()` | Array |

| Argument | Type | Details |
|---|---|---|
| this: `input` | Array | The input array. |

## Examples

### Code Editor (JavaScript)

```javascript
var empty = ee.Array([], ee.PixelType.int8());
print(empty.exp());  // []

// [Math.pow(Math.E, -1), 1, Math.E, 7.389]
print(ee.Array([-1, 0, 1, 2]).exp());

var start = -5;
var end = 2;
var points = ee.Array(ee.List.sequence(start, end, null, 50));
var values = points.exp();

// Plot exp() defined above.
var chart = ui.Chart.array.values(values, 0, points)
    .setOptions({
      viewWindow: {min: start, max: end},
      hAxis: {
        title: 'x',
        viewWindowMode: 'maximized',
      },
      vAxis: {
        title: 'exp(x)',
      },
      lineWidth: 1,
      pointSize: 0,
    });
print(chart);
```
Python setup

See the [Python Environment](https://developers.google.com/earth-engine/guides/python_install) page for information on the Python API and using
`geemap` for interactive development.

```python
import ee
import geemap.core as geemap
```

### Colab (Python)

```python
import altair as alt
import pandas as pd

empty = ee.Array([], ee.PixelType.int8())
display(empty.exp())  # []

# [pow(math.e, -1), 1, math.e, 7.389]
display(ee.Array([-1, 0, 1, 2]).exp())

start = -5
end = 2
points = ee.Array(ee.List.sequence(start, end, None, 50))
values = points.exp()

df = pd.DataFrame({'x': points.getInfo(), 'exp(x)': values.getInfo()})

# Plot exp() defined above.
alt.Chart(df).mark_line().encode(
    x=alt.X('x'),
    y=alt.Y('exp(x)')
)
```