# JavaScript Generate random points within an svg circle area in d3 or javascript generate random points in a circle,generate random points within

I have an svg circle element with coordinate attribute as below:

``````<circle id="c1" class="area" cx="440" cy="415" r="75"></circle>
``````

I would like to generate some random points within the circle element by using javascript or d3. I thought about the right approach to apply. And I come to the conclusion that I can do it in 2 ways:

• by generate just n random point coordinates cx,cy and then check if each point is within the svg circle if the distance from it to the center is at most the radius of circle element.

• by generate the radius of the point as `R * sqrt(random())` and the theta as `random() * 2 * PI` and calculate cx,cy as `r * cos(theta)` and `r * sin(theta)`.

Is there a better approach?

## How to trace function calls in Marionette

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