问题描述
我用wordcloud2创建了一个漂亮的词云,但我只想显示出现n次的词。怎么做?
function Analyzer() {
const [brands,setBrands] = React.useState([]);
const handleChange = ({ target }) => {
const { value } = target;
setBrands(value.split(','));
};
const Table = () => {
if (!brands || brands.length === 0) return null;
return (
<table className={styles.table}>
<thead>
<tr>
<th>No.</th>
<th>Brand</th>
<th>Also known as</th>
<th>Avg. price</th>
</tr>
</thead>
<tbody>
{brands.map((brand) => (
<tr>
<td>1</td>
<td>{brand}</td>
<td></td>
<td><input type= "number"></input>%</td>
</tr>
)}
</tbody>
</table>
);
};
return(
<div>
<input
onChange={handleChange}
placeholder="Example: Nike,Adidas,New Balance ..."
type="text"
value={brands}
/>
<Table />
</div>
);
};
解决方法
最后,我用了:
d <- d[c(1:n),]
如果我想保留数据的前n行