55 lines
1.2 KiB
Markdown
55 lines
1.2 KiB
Markdown
|
## `ATAN2` [esql-atan2]
|
||
|
|
|
||
|
|
**Syntax**
|
||
|
|
|
||
|
|
:::{image} ../../../../../images/atan2.svg
|
||
|
|
:alt: Embedded
|
||
|
|
:class: text-center
|
||
|
|
:::
|
||
|
|
|
||
|
|
**Parameters**
|
||
|
|
|
||
|
|
`y_coordinate`
|
||
|
|
: y coordinate. If `null`, the function returns `null`.
|
||
|
|
|
||
|
|
`x_coordinate`
|
||
|
|
: x coordinate. If `null`, the function returns `null`.
|
||
|
|
|
||
|
|
**Description**
|
||
|
|
|
||
|
|
The [angle](https://en.wikipedia.org/wiki/Atan2) between the positive x-axis and the ray from the origin to the point (x , y) in the Cartesian plane, expressed in radians.
|
||
|
|
|
||
|
|
**Supported types**
|
||
|
|
|
||
|
|
| y_coordinate | x_coordinate | result |
|
||
|
|
| --- | --- | --- |
|
||
|
|
| double | double | double |
|
||
|
|
| double | integer | double |
|
||
|
|
| double | long | double |
|
||
|
|
| double | unsigned_long | double |
|
||
|
|
| integer | double | double |
|
||
|
|
| integer | integer | double |
|
||
|
|
| integer | long | double |
|
||
|
|
| integer | unsigned_long | double |
|
||
|
|
| long | double | double |
|
||
|
|
| long | integer | double |
|
||
|
|
| long | long | double |
|
||
|
|
| long | unsigned_long | double |
|
||
|
|
| unsigned_long | double | double |
|
||
|
|
| unsigned_long | integer | double |
|
||
|
|
| unsigned_long | long | double |
|
||
|
|
| unsigned_long | unsigned_long | double |
|
||
|
|
|
||
|
|
**Example**
|
||
|
|
|
||
|
|
```esql
|
||
|
|
ROW y=12.9, x=.6
|
||
|
|
| EVAL atan2=ATAN2(y, x)
|
||
|
|
```
|
||
|
|
|
||
|
|
| y:double | x:double | atan2:double |
|
||
|
|
| --- | --- | --- |
|
||
|
|
| 12.9 | 0.6 | 1.5243181954438936 |
|
||
|
|
|
||
|
|
|