# `GSRadialGradient.startRadius`

*Instance Property*

The radius of the start circle, relative to the drawing bounds.

## Declaration

```swift
var startRadius: CGFloat { get set }
```

```objc
@property (nonatomic) CGFloat startRadius;
```

```python
startRadius() -> float
setStartRadius_(startRadius: float)
```

## Discussion

The value is relative to the bounding rectangle in which the gradient drawn. To get the absolute value, multiple the stored value by the square root of the product of the side lengths of the bounding rectangle.