# SEGOVERLAP¶

The **SEGOVERLAP** function determines whether two segments overlap and returns a Boolean value.

## Usage¶

`SEGOVERLAP(x,y,a,b) : boolean`

## Examples¶

The following example shows a single NOR row with two segments `x-y`

and `a-b`

, which do not overlap. The test column will return 0.

```
NORROWS 1 | CALC x 10 | CALC y 20 | CALC a 25 | CALC b 35 | CALC test segoverlap(x,y,a,b)
```

In the next example, we show x-y overlapping a-b. The test column in this case will show 1.

```
NORROWS 1 | CALC x 10 | CALC y 20 | CALC a 15 | CALC b 25 | CALC test segoverlap(x,y,a,b)
```

To calculate the distance between two non-overlapping segments, use the SEGDIST function.