
Chapter II-12 — Graphs
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And here we use “Stack on next”:
You can create layer graphs by plotting a number of waves in a graph using the fill to next mode. Depend-
ing on your data you may also want to use the add to next grouping mode. For example, in the following
normal graph, each trace might represent the thickness of a geologic layer:
We can show the layers in a more understandable way by using fill to next and add to next modes:
Because all the Grouping modes depend on the identity of the next trace, you may need to adjust the order-
ing of traces in a graph. You can do this using the Reorder Traces dialog. Choose Reorder Traces from the
Graph menu. Select traces you want to move. Adjust the ordering by dragging the selected traces up and
down in the list, dropping them in the appropriate spot.
Note: All of the waves you use for the various grouping, adding, and stacking modes should have the
same numbers of points, X scaling, and all be displayed using the same axes. Otherwise, if there
is not a point-to-point correspondence between the traces in your graph, you will get rather
unusual and confusing results when using any of these various graphing modes.
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