# setDocumentWidthRatio method

void setDocumentWidthRatio(

1. double documentWidthRatio

)

Sets the ratio of the estimated width of the searched document in the image. Hint: Default value is 1.

param documentWidthRatio Ratio of the estimated width of the searched document in the image. throws DocumentException An error has occurred during Document Library execution.

## Implementation

    void setDocumentWidthRatio(double documentWidthRatio) {
      var err = documentSDK.id3DocumentDetector_SetDocumentWidthRatio(_pHandle.value, documentWidthRatio);
      if (err != DocumentError.success.value) {
        throw DocumentException(err);
      }
    }