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Gains Tab
Use the Gains
tab to increase or decrease the seismic gain for display purposes. 
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Wiggle gain can be adjusted for excursion or clip. Color gain can be
adjusted for gain or bias. Adjust these parameters by moving the slider
bars up and down. The Seismic
window is dynamically updated. You can also adjust the gain by typing
values into the text boxes and then clicking <Apply>.
- Wiggle Excursion
- Applies a scalar to the trace amplitude. A setting of 4 displays
the maximum amplitude of the entire dataset at an excursion of two traces
on either side of zero amplitude. Increase the wiggle excursion to increase
the trace amplitude, and vice versa.
- Wiggle Clip
- Clips amplitudes higher than the number of traces specified by
the wiggle clip. Clipped amplitudes appear ‘squared off’. A wiggle clip
setting of 3 clips amplitudes that fall beyond three traces in either
direction. If your data appears clipped, increase the wiggle clip or decrease
the wiggle excursion.
- Color Gain
- Applies a scalar to your data range on the color palette so that
colors are focused on a smaller or larger data range than the default.
If the data range on your color palette is –32 800 to +32 800, and you
change the color gain from 1 to 2, then your new data range will be –16
400 to +16 400. All values greater than 16 400 will be displayed as 16
400.
- Color Bias
- Shifts the color mapping about the zero point. This is useful
for one sided data which contains all positive or negative values. Enter
a number between –0.5 and +0.5. Zero is the default and means that colors
are distributed about the zero data value. Apply a color bias to shift
the data range so that colors are distributed about a value other than
zero. For example, if you have a color range of –32 800 to 32 800 and
enter a color bias of -0.5, the new color range will be 0 to 65 500.
A setting of 0.5 would shift the color range to –65 000 to 0.
- Display gain
is a temporary setting. Use the Amplitude
Scale Factor to make adjustments that can be saved with your data
file for display, plotting, and export.
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