---
id: 5d8a4cfbe6b6180ed9a1ca1f
title: Part 66
challengeType: 0
dashedName: part-66
---
# --description--
Each circle needs a `cx` and `cy` attribute so it knows where to display on the SVG. These are similar to the x and y coordinates for the lines and will be calculated in the same way. The difference is that, for circles, the `cx` and `cy` are attributes, so you need to use the `attr` function.
Use the `attr` function to set the `cx` to `d => xScale(d.year)`.
# --hints--
test-text
```js
assert($('svg circle')[0].getAttribute('cx') == '70');
```
# --seed--
## --before-user-code--
```html
D3 Dashboard
```
## --seed-contents--
```html
```
# --solutions--
```html
```