Overview:
PDFVis is a software program for visualizing uncertainty, which can be
represented by a probability density function (PDF) located at each grid cell in
a spatial domain. A full description of uncertainty at each grid cell is
represented using a probability distribution. The software allows scientists to
visualize the uncertainty in the given spatial domain by creating maps of first,
second, and third order statistics summarizing the distributions.
PDFVis also provides an interacitve probe that allows users to investigate the probability allows users distribution at any grid cell or from a user-selectable profile in the spatial domain. Furthermore, the software provides shape descriptions of the probability distribution by automatically computing and displaying the modality (the number of peaks) in the probability distributions. PDFVis also displays shaded surfaces of the probability distributions so that the shapes of the distributions are much easier to comprehend.
Features & Capabilities:
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displays several first, second, and third order statistics of probability
density functions (PDFs) simultaneously in one image using various graphics
display techniques
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provides an interactive probe that conveys various forms of density estimates
(e.g., histogram, kernel density estimator) of the PDF at the grid cell associated with the current probe position
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displays the density estimates of the distribution associated with the
current probe position
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displays shaded surfaces of PDFs from a user-selectable profile (row or column)
to the the shapes of the PDFs can be visualized, and color map the surfaces
according to a user-selectable scalar variable
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displays the modality of the PDFs at each grid cell and the locality of the
peaks in each grid cell
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allows scientists to query the modality of the PDF based on user-specified
range and criteria
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provides simple user command keys for easy interactivity
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