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 # SurfaceLineExportSpectrum 

 Last update: 17.07.2025 

## Description

Exports the spectrum data of a measurement line to a spectrum file. Returns TRUE if the call has succeeded, FALSE otherwise.

## Syntax

- `object.SurfaceLineExportSpectrum(double dXPos1, double dYPos1, double dXPos2, double dYPos2, BSTR bstrFileName)` as Boolean
- *object*: Virtual Human Vision Lab
- *dXPos1*: horizontal coordinate of the first vertex of the line
- *dYPos1*: vertical coordinate of the first vertex of the line
- *dXPos2*: horizontal coordinate of the second vertex of the line
- *dYPos2*: vertical coordinate of the second vertex of the line
- *bstrFileName*: path and filename of the spectrum (.spectrum, .spe) file

## VB script example

```VB
' Creates VisionLabViewer COM server
set VisionLabViewer = CreateObject("VisionLabViewer.application")
' Opens XMP file
VisionLabViewer.OpenFile("C:\Example.xmp")
' Exports spectrum into SPE file
VisionLabViewer.SurfaceLineExportSpectrum(-0.25, 0, 0.25, 0, "C:\Example.spe")

```

## IronPython example

```ironpython
from System import Type, Activator
#Creates VisionLabViewer COM server
type = Type.GetTypeFromProgID("VisionLabViewer.Application")
VisionLabViewer = Activator.CreateInstance(type)
# Opens XMP file
VisionLabViewer.OpenFile("C:\\Example.xmp")
# Exports spectrum
VisionLabViewer.SurfaceLineExportSpectrum (-0.25, 0, 0.25, 0, "C:\\Example.spe")

```