laue chart padding
<la-cartesian
:height="150"
:width="300"
:data="trend"
:padding="[20, 0, 20, 0]"
>
<!--
Similar CSS padding.
You can specify [up, right, bottom, left]
by an array of numbers,
such as [0, 10, 20, n => n + 30]
-->
<la-line animated dot curve prop="v"></la-line>
<la-tooltip></la-tooltip>
</la-cartesian>