Writing spectrum and reading spectrum

[Dennis_Dutoit]

Hi , I am currently busy with writing en reading spectra from a Oceans optics USB 2000+ I need to take 20 lightspectra from samples and log these spectra I a file for analyzing afterwards.  Logging seems to be no problem but reading the correcty does.  The spectra has not the right dimensions. Needs to start at 188 nm and in the graph it starts at 0. When I put in an offset of 188 in the peak isn't aligned with the right wavelength. That will become clear in the pictures below. It is the same spectrum  but the reading part is wrong. Thanks for helping.

[pincpanter · Accepted solution]

You need to use an XY graph, whose data is a cluster of two arrays: the X array (wavelengths) and the Y array (intensities).