Question

提示如下：使用提供的SQL代码对一篮子商品进行分析，以提取特定商品对在同一篮子中出现的频率。使用geom_tile（）创建一个热图。包括可以促进必要调整以使热图有用的代码。

我已经建立了连接，目前我的代码已经连接了

```{sql, connection = conn, output.var = "dataframe"} 

SELECT (SELECT productName FROM Products WHERE Products.productCode = OD1.productCode) AS `Product 1`, 
(SELECT productName FROM Products WHERE Products.productCode = OD2.productCode) AS `Product 2`, count(*) as Frequency
FROM OrderDetails AS OD1 JOIN OrderDetails AS OD2 ON OD1.orderNumber = OD2.orderNumber 
WHERE OD1.productCode > OD2.productCode
GROUP BY `Product 1`, `Product 2` HAVING Frequency > 10
ORDER BY Frequency DESC, `Product 1`, `Product 2`;

```


```{r}
names(dataframe) <-c('Prod1', 'Prod2', 'Frequency')
ggplot(dataframe, aes(x=Prod1, Prod2, y=Frequency)) + 
  geom_tile(aes(fill=Frequency))+ 
  scale_fill_gradient(name='Basket of Goods Analysis', low='white', high='red')
```

我坚持如何显示篮子中特定对的存在，因此将不胜感激！我还停留在提示的x值使用什么上。

如何在R中通过SQL提示在R中创建热图？

0 个答案: