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LC ChemStations Revision A.03.xx or higher
Date 01/10/94
Macro Contribution #4
Contribution 'Load a chromatographic signal from spectra matrix'

Revision History
----------------

  1. A.02.xx original version
  2. A.03.xx includes installation update.
  3. A.05.xx includes update for data analysis drawing    
  4. A.06.xx edited to ensure that -ve RTs due to DAD spectra 
     filter do not show in the UI and stop the macro running
     as expected
 

Contribution Purpose
--------------------
	
To allow the user, interactively through a dialog box, to select 
the retention time and wavelength range, including the reference 
wavelength, to extract a chromatographic signal from the spectral
data file acquired with the original data. The functionality enables
users to extract and process chromatographic signals at wavelengths
the were not specified in the original analytical method. 


Contribution Structure
----------------------

	One macro file, 'LoadChro.mac'.
	

Prerequisites
-------------
 
      - MS Operating system as supported by the revision of the ChemStation in use          
      - The LC ChemStation software, Rev A.03.xx or higher


Installation
------------

	* Copy the macro to the ChemStation's executable directory,
	  'C:\Chem32\CORE' by default.

Use
---

	* Load the macro into the ChemStation using the command...

		Macro LoadChro.mac, go
	
	The command self installs into the File|Load submenu and can be 
	called directly from the pop-up menu.
	


Operation Overview
------------------

The macro tests for the existence of a spectral (*.uv) file associated with the
last loaded signal in ChromReg, by trying to load the first spectrum of the file. 

If successful a dialog box allowing the entry of a RT range and signal and 
reference wavelength and bandwidth is displayed. The data may be adjusted by
the user. They are checked against the boundary conditions specified at the 
time of data acquisition and, if within the limits, the parameters are passed to the
'LoadChrom' command. Any error conditions are indicated on the ChemStation's message
line and the user may correct the data.