# ee.Geometry.BBox.length

Returns the length of the linear parts of the geometry. Polygonal parts are ignored. The length of multi geometries is the sum of the lengths of their components.

<br />

| Usage | Returns |
|---|---|
| `BBox.length(*maxError*, *proj*)` | Float |

| Argument | Type | Details |
|---|---|---|
| this: `geometry` | Geometry | The input geometry. |
| `maxError` | ErrorMargin, default: null | The maximum amount of error tolerated when performing any necessary reprojection. |
| `proj` | Projection, default: null | If specified, the result will be in the units of the coordinate system of this projection. Otherwise it will be in meters. |

## Examples

### Code Editor (JavaScript)

```javascript
// Define a BBox object.
var bBox = ee.Geometry.BBox(-122.09, 37.42, -122.08, 37.43);

// Apply the length method to the BBox object.
var bBoxLength = bBox.length();

// Print the result to the console.
print('bBox.length(...) =', bBoxLength);

// Display relevant geometries on the map.
Map.setCenter(-122.085, 37.422, 15);
Map.addLayer(bBox,
             {'color': 'black'},
             'Geometry [black]: bBox');
```
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
# Define a BBox object.
bbox = ee.Geometry.BBox(-122.09, 37.42, -122.08, 37.43)

# Apply the length method to the BBox object.
bbox_length = bbox.length()

# Print the result.
display('bbox.length(...) =', bbox_length)

# Display relevant geometries on the map.
m = geemap.Map()
m.set_center(-122.085, 37.422, 15)
m.add_layer(bbox, {'color': 'black'}, 'Geometry [black]: bbox')
m
```