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Table class

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Table class

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15 Oct 2013 (Updated )

A class for handling data tables together with row and column labels

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Description

"Table" is a class for handling flat data tables together with row and column labels. It provides functions for reading/writing from/to text files, and for quickly displaying in a uitable object. Example:
    tab = Table.read('fisherIris.txt');
    show(tab);
    write(tab, 'tab2.txt');
Several plot functions are overloaded such that row or column labels are automatically added to the plot.
    figure;
    plot(tab('PetalLength'), tab('PetalWidth'), '*');

It provides facilities to access data using name of columns. It also support basic editing features: concatenation, extraction of sub-tables...
 
Subtables can be obtained via parens indexing:
    tab2 = tab(1:30, :);

Table content can be accessed by curly braces indexing:
    firstSpecies = tab{1:5, 'Species'};

Raw numeric data are stored in the 'data' property, and categorical information in the 'levels' field:
    petalLength = tab('PetalLength');
    petalLength(1:10).data
    species = tab.levels{5}

Several functions are available for quick overview of data stored in Table object: summary(), min(), max()...

A "Pca" class is also provided, that allows to quiclky perform principal component analysis and to keep column names in results.

A quick overview of the features is given in the demo script.

Acknowledgements

Data Table inspired this file.

This file inspired Image M.

MATLAB release MATLAB 7.9 (R2009b)
Other requirements some functions call the statistics toolbox, but most of the features do not need it.
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Updates
25 Jun 2014

add curly braces indexing, fix bugs in Table.read.

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