NDLUTIL software
Version 0.14		Sunday 20 Nov 2005 at 22:59
Copyright (c) 2005 Neil D. Lawrence

This toolbox implements some generic functions used by other toolboxes. Originally it was spun out of the IVM 0.221 toolbox.


Version 0.131 Release Notes
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Added files getline.m and tokenise.m which are string utilities for reading and processing files.

Version 0.13 Release Notes
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pdinv now adds jitter which is proportional to the mean of the diagonal elements of the matrix.




MATLAB Files
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Matlab files associated with the toolbox are:

cumGaussian.m: Cumulative distribution for Gaussian.
defaultOptions.m: The default options for optimisation.
gaussOverDiffCumGaussian.m: A gaussian in x over the difference between two cumulative Gaussians. 
gaussSamp.m: Sample from a Gaussian with a given covariance.
getline.m: Get a line from a file, but ignore it if it starts with #.
getSymbols.m: Get a cell structure of different plot symbols.
gradLogCumGaussian.m: Gradient of the log of the cumulative Gaussian.
invCumGaussian.m: Inverser of the cumulative Gaussian.
invSigmoid.m: The inverse of the sigmoid function.
lnCumGaussian.m: log cumulative distribution for Gaussian.
lnDiffCumGaussian.m: Computes the log of the difference between two cumulative Gaussians.
logdet.m: The log of the determinant when argument is positive definite.
ngaussian.m: Compute a Gaussian with mean 0 and variance 1.
numsf2str.m: Convert number to a string with a number of significant digits.
pdinv.m: Computes the inverse of a positive definite matrix
preparePlot.m: Helper function for tidying up the plot before printing.
rocCurve.m: Draw ROC curve and return labels.
scatterPlot.m: 2-D scatter plot of labelled points.
sigmoid.m: The sigmoid function
stringSigFigs.m: Convert number to a string with a number of significant digits.
stringSplit.m: Return separate parts of a string.
tableRead.m: Read in data which has column titles in the first line and separated values in each other line.
tokenise.m: Split a string into separate tokens.
traceProduct.m: Returns the trace of the product of two matrices.
zeroAxes.m: A function to move the axes crossing point to the origin.