Table 6-14 Centroid Dialog - Descriptions
Description
Item
For each peak, the centroid y-value is the intensity of the largest data point comprising
the peak.
Intensity
This feature is similar to the Intensity feature except that the intensity is subtracted by
the baseline intensity in the case that there is a baseline offset.
Height
For each peak, the centroid y-value is the total area of the peak. This is a true integral
in the sense that the reported value depends on both the intensity profile and the width
of the peak.
Area
For each peak, the y-value is the sum of the portion of the intensities comprising the
peak which are above 50% of the peak apex intensity. This value is useful because it
does not depend only on the intensity of a single data point (as do the Intensity and
Height features) and it is not influenced by the edges of the peak which may be noisy
or which may have interference.
Intensity sum above
50%
7. If there are multiple traces in the active graph, then select
Process all overlays (otherwise active data
only)
to apply the operation to all of the traces.
If the
Only show this dialog again if the shift key is down
check box is selected, then the selected
action is used unless the user holds the
Shift
key to change the option.
Export Data as Text
Currently active spectrum or chromatogram is saved to a tab-delimited text file.
1. Open the Explorer workspace.
2. Click
File > Open Multiple Samples.
System User Guide
SCIEX X500 QTOF System
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Operating Instructions—Software
