Filter for Point Trajectories
You can right-click a Point Trajectories plot node to add a Filter subnode (), which controls the points to include and whether to render all points or a subset of the points. The Filter node has the following section:
Point Selection
From the Points to include list, select the points or subset to include in the point trajectories plot:
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All (the default) to include all points.
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Logical expression to include a subset of points that fulfill the logical expression that you enter in the Logical expression for inclusion field. For example, x>0 only includes points in areas where the x coordinate is positive. Click the Replace Expression () button to select predefined expressions for the logical expression.
From the Particles to render list, select an option for controlling how many particles to render:
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All (the default) to render all points in the point trajectories plot.
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Fraction to only render a fraction of the points. You specify the fraction as a number between 0 and 1 in the Fraction of points field. The default fraction is 1; that is, to render all points.
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Number to only render a certain number of points, which you specify in the Number of points field. The default is to render 100 points.