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The Guard parameter is a special type of parameter used to control the activation or deactivation of objects based on the values of other parameters.

List of Logical Statements

The following are some of the logical statements that can be used within the expressions of Guard parameters:

.EQ. → Equal to (==)

.NE. → Not equal to (!=)

.LT. → Less than (<)

.LE. → Less than or equal to (<=)

.GT. → Greater than (>)

.GE. → Greater than or equal to (>=)

.AND. → AND (&&)

.OR. → OR (||)

.NOT. → NOT (!)

Example:

Code Block
<O N="GuardObject1" T="Project" Category="Logical Statement and Test" TransAlignRule="Right">
    <!-- created by ParamML Examples on 09.02.2023 -->
    <O N="Column_Type" T="Group">
        <P N="Rectangular" V="1" Category="Column_Type" />
        <P N="Circular" V="2" Category="Column_Type" />
    </O>
    <O N="Input" T="Group">
        <P N="W" V="10" D="column width" Role="Input" Category="Input" />
        <P N="L" V="10" D="column length" Role="Input" Category="Input" />
        <P N="D" V="10" D="column diameter" Role="Input" Category="Input" />
        <P N="H" V="100" D="column height" Role="Input" Category="Input" />
        <P N="ColumnType" V="Circular" Role="Input" Category="Input" />
    </O>
    <O N="Geometry" T="Group">
        <O T="Surface" Z="0">
            <P N="Guard" V="ColumnType .EQ. Rectangular" />
            <P N="Thickness" V="H" />
            <O T="Point" X="0" Y="0" />
            <O T="Point" X="W" Y="0" />
            <O T="Point" X="W" Y="L" />
            <O T="Point" X="0" Y="L" />
        </O>
        <O T="Circle" Z="0">
            <P N="Guard" V="ColumnType .EQ. Circular" />
            <P N="Thickness" V="H" />
            <P N="Radius" V="D/2" />
        </O>
    </O>
</O>

Navigate to the OpenBrIM App and search for your desired object.

Change the values of the "ColumnType" cell to "1" and "2" within the OpenBrIM app.

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To view this example in the library, see (https://openbrim.org/platform/?application=inc&author=ParamML_Examples_OpenBrIM+Platform&folder=Logical+Statement+and+Test&obj=objidqqxhbra6yog0phza05hea)