我有两个数据帧（df1，df2）。我想将它们组合起来，以便如果df1中存在一个特定样品ID的基因，我希望在相应的匹配基因列和df2中的样品ID行中为其分配“ 1”（存在）。该基因不存在于df1中，它将自动在df2中填充“ 0”（不存在），如下面的结果数据框中所示。在此方面您的帮助将非常感谢。
df1
+-----------+-----+
| Gene name | ID |
+-----------+-----+
| A | 100 |
| A | 105 |
| B | 100 |
| B | 101 |
| B | 103 |
| C | 105 |
+-----------+-----+
df2
+-----+---+---+---+---+
| ID | A | B | C | D |
+-----+---+---+---+---+
| 100 | | | | |
| 101 | | | | |
| 102 | | | | |
| 103 | | | | |
| 104 | | | | |
| 105 | | | | |
| 106 | | | | |
+-----+---+---+---+---+
结果
+-----+---+---+---+---+
| ID | A | B | C | D |
+-----+---+---+---+---+
| 100 | 1 | 1 | 0 | 0 |
| 101 | 0 | 1 | 0 | 0 |
| 102 | 0 | 0 | 0 | 0 |
| 103 | 0 | 1 | 0 | 0 |
| 104 | 0 | 0 | 0 | 0 |
| 105 | 0 | 0 | 1 | 0 |
| 106 | 0 | 0 | 0 | 0 |
+-----+---+---+---+---+