# setCropMargin method

void setCropMargin(

1. double cropMargin

)

Sets the relative margin around the face for basic portrait cropping. Hint: Default value is 0.5.

param cropMargin Relative margin around the face for basic portrait cropping. throws FaceException An error has occurred during Face Library execution.

## Implementation

    void setCropMargin(double cropMargin) {
      var err = faceSDK.id3FacePortraitProcessor_SetCropMargin(_pHandle.value, cropMargin);
      if (err != FaceError.success.value) {
        throw FaceException(err);
      }
    }