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| There are multiple ways of probing a data set for point or cell values. The simplest
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| is the Probe Location filter. Additionally, there are a variety of filters
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| to plot data with respect to time, location, or grid object Id.
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| === Probe Filter ===
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| The probe filter can be used to query a data set for point or cell data.
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| Options for the probe filter are:
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| * Show point button is used to show where the center of the sphere is for generating the probe points.
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| * Center on bounds will place the sphere center at the center of the data set's bounds.
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| * The sphere center can either be set in the properties tab of the object inspector or in the 3d view with the mouse cursor. To choose a new point in the 3d view window, press P and then click on the desired point. Note that the Show Point option must be selected.
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| The output for this filter is a single cell comprised of a set of points in a vtkPolyData.
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| === Plot Data / Scatter Plot ===
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| The Plot Data filter and Scatter Plot filter are very similar in functionality
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| with the Scatter Plot filter being a deprecated version of the Plot Data filter.
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| The main difference is that the Scatter Plot filter's output is a 1D rectilinear
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| grid while the Plot Data filter's output is the same type as the input.
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| The Plot Data filter plots point or cell data over the entire data set. By default
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| the x axis values are determined with respect to their point or cell index.
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| In the Display tab of the Object inspector the user can choose which point or cell
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| array to use as the x axis values.
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| The Display tab also gives options for
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| which arrays are to be plotted as well as plot preferences such as line thickness and marker style.
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| === Plot Over Line ===
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| === Plot on Sorted Lines ===
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| === Plot on Intersection Curves ===
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| === Plot Selection Over Time ===
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| === Plot Global Variables Over Time ===
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