Windows Programming

Parallel Coordinates

Adithya Addanki(aa207)

Instructor: Dr. Yingcai Xiao

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• To know– What– Why

• Implementation Details• Technical Challenges• Demo• Limitations• Applications• Extensions

Agenda

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What and Why

• Most of the real world data typically has >=3 dimensions• Curse of Dimensionality

• Understanding data of more than 3 dimensions• Reduction techniques might be applied

• Backdrop of these might be the user want to still analyze the data based on original attributes instead of transformed or reduced attributes.

• Visualization• Visualizing dimensions >3 is not perceivable by human eye.

• Parallel Coordinates• Philbert Maurice D’Ocagne in 1885• Representing multiple dimensions with the help of parallel axes.• Samples in data set are represented as poly lines spanning the axes.

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Example

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Example

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Example

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Implementation Details

• WPF– UI

• Code Behind- Application Logic– C#

Challenges• Representing heterogeneous data types• Scaling the range of values to fit to fixed axes

Demo

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Limitations

• Each axis can only be compared with two other axes at once;– One to the left another to the right

• More range of values in each attribute might cause confusion to the user. Use with caution with regards to categorical data.

• ASCII based text characters only[character sets and digits]• Rearrangement of attributes | axes order might be required to

view patterns– Good arrangement of axes could be dealt using heuristics.

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Extensions & Applications

• Brushing- A provision to analyze the parallel coordinate plot where clusters are formed.

• Parallel Coordinates Applications– Data Mining– Traffic Control– Process Control– Computer Vision

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Questions?

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Thank You