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ParaView Visualization Course

Comparative Viewing, XY Plot, Spreadsheet View

Dr. Jean M. Favre

Chief ScientistVisualization Group Leader

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Plot Over a Line

Position the line end-points on the extremities of thedataset

User can move them back with the “p” stroke (twotimes)

Plot will open a “XY Plot View”

Use panning, zooming and reset camera buttons

ValidPointMask array set to 0 if data is missing

Can be done interactively, “real-time” with the Auto-

Apply button Load State “nacaPlot.pvsm”

Histogram is a vtkRectilinearGrid.

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Bart Chart

Histogram will open a “Bar Chart View”

Use panning, zooming and reset camera buttons

Play test “LoadStateHistogram.pvsm”

“Plot over Line” and Histogram are of typevtkRectilinearGrid

Can be saved as such, or as CSV file

Can compute averages of the other data values.Use SpreadSheet View to look at CellData

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GeoPhysics example: Longitudinal average

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Spreadsheet View

Any dataset can be viewed in a “Spreadsheet View”

Allows display of node- or cell-data

Allows selection

Can be exported as CSV file Display can be reduced to “Show only selected

elements”

Very smart at showing a table of arrays for multi-million data points!

Demo with 400x400x400

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Comparative Viewing

• Compare, side-to-side, multiplevisualizationpipelines

• Demo

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Plot Over Time

• Multiple points canbe tracked overtime (based ontheir ID)– Make a selection

– Copy the ActiveSelection

– Apply

– Plotting is allowedfor one point at atime.

• Produces a multi-block dataset

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Summary

Plotting and Charting require RectilinearGrids (anduse the X coordinate as bottom axis). Developpersshould prepare data as such.

Comparative viewing is to be done with caution (or

low-resolution data)

Idem for “plot over time”

Both are ideal candidates for batch-modeprocessing