Function setOrientation

setOrientation(isPortrait): void
JMap.Application.Print.setOrientation

Sets the print layout orientation as portrait or landscape.
Parameters
- isPortrait: boolean
  true to display as portrait, false as landscape
Returns void
Throws
if isPortrait is not a boolean

Example
```
// set the layout as portrait
JMap.Application.Print.setOrientation(true)

// set the layout as landscape
JMap.Application.Print.setOrientation(false)
```