Selection by value requires the user to define:
♦ A matrix, which could be the internal matrix or an external .ufm file.
♦ An “operation”, e.g. “less than”, “greater than or equal” etc.
♦ A critical value.
Thus you could select cells in the second input trip matrix whose values are > 10.
Note that tests such as EQ or NE also imply equality within some plus/minus limits which also need to be specified. The principles apply equally to link selection within P1X or SATDB; see 11.6.1 for further details.
Note that selection by value is not “permanent” when applied to the internal matrix. Thus if you select all internal matrix cells > 10.0, factor just those cells by 0.5, and then carry out another operation “with selection by value” the cells to be selected in the second operation will be those whose current value is 10.0, i.e. those cells who were originally > 20.0. In order to “fix” a selection by value using the internal matrix you should copy it into a .ufm file (and add it as an input matrix) and base your selection on that file so that the values do not change.
N.B. This is the opposite of link selection in SATDB, P1X etc where links, once selected, are permanently “branded”.