Filter for Grain and Grain Positions
You can right-click a Grain Positions plot node to add a Filter subnode (), which controls the grain types to include and whether to render all grains or a subset of the grains. The Filter node has the following section:
Grain Selection
From the Grains to include list, select the grain types or subset to include in the Grain Positions plot:
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All (the default) to include all grains.
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Logical expression to include a subset of grains that fulfill the logical expression that you enter in the Logical expression for inclusion field. For example, gran.V>1 only includes grains with a speed larger than 1, and x>0 only includes grains in areas where the x coordinate is positive. Click the Replace Expression () button to select predefined expressions for the logical expression.
From the Grains to render list, select an option for controlling how many grains to render:
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All (the default) to render all grains in the granular flow simulation.
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Fraction to only render a fraction of the grains. You specify the fraction as a number between 0 and 1 in the Fraction of grains field. The default fraction is 1; that is, to render all grains.
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Number to only render a certain number of grains, which you specify in the Number of grains field. The default is to render 100 grains.