Catalogues and Specifications Reference Manual
Data Set (DTSET) : Querying Properties in MODEL
Querying Properties in MODEL
Consider the following examples, which allow you to query two properties of this parameterised I-beam in MODEL:
Example 1: The depth of the beam
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Datakey: DEPT
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Dtitle: ’Depth of beam’
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Pproperty: (PARAM [1] )
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Dproperty: 600
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Purpose: DATA
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Number: 1
The command Q PROP DEPT in MODEL or DRAW will return the depth of the current beam (or the default of 600 if the true value cannot be evaluated).
Example 2: The cross-sectional area of the beam
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Datakey: XSEC
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Dtitle: ’Cross‑section of beam’
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Pproperty: (((P [1] - (2 * P[3])) * P[4]) + (2 * (P[2] * P[3]))
Note:
PARAM has been shortened to P here to show the format of the expression more clearly. The full version must be used when setting the attribute.
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Purpose: DATA
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Number: not relevant here, so leave unset
The command Q PROP XSEC in MODEL or DRAW will return the calculated cross-sectional area of the current beam.
Similarly, you could query the following attributes of this DATA element:
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Q PRTI XSEC
Data title
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Q PRDE XSEC
Data description
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Q PRPU XSEC
Data purpose
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