Spectrum_YType Property

CDXML Name:YType
CDX Constant Name:kCDXProp_Spectrum_YType
CDX Constant Value:0x0A83
Data Size:INT16
Property of objects:kCDXObj_Spectrum
First written/read in:ChemDraw 5.0
Required?Until ChemDraw 6.0

Description:

The type of units the Y-axis represents.

This is an enumerated property. Acceptible values are shown in the following list:
Value CDXML Name Description
0 Unknown The axis type is unknown. Not recommended
1 Absorbance Axis is in absorbance units, and consequently has a baseline of 0.0 with peaks pointing up. Only for IR spectra
2 Transmittance Axis is in transmittance units. The baseline is at 1.0 and peaks points down to a value of 0.0 being no transmission. Only for IR spectra
3 PercentTransmittance Axis is in transmittance units*100. The baseline is at 100% and peaks points down to a value of 0.0 being no transmission. Only for IR spectra<
4 Other Axis is some other type
5 ArbitraryUnits Axis is unscaled -- essentially, the absolute values have no meaning and only relative values matter

If this property is absent:

The Y-axis is treated as having Unknown units. This is not recommended.

 


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