Rescale: Difference between revisions
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===Purpose=== | ===Purpose=== | ||
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===Description=== | ===Description=== | ||
Rescales a matrix x using the means means and standard deviation stds vectors specified. An optional input options is an options structure with the field: | Rescales a matrix <tt>x</tt> using the means <tt>means</tt> and standard deviation <tt>stds</tt> vectors specified. An optional input <tt>options</tt> is an options structure with the field: | ||
rx = rescale(x,means) rescales a mean centered matrix x using a vector of means. | rx = rescale(x,means) rescales a mean centered matrix x using a vector of means. | ||
Revision as of 11:07, 9 October 2008
Purpose
Scales data back to original scaling.
Synopsis
- rx = rescale(x,means,stds,options)
Description
Rescales a matrix x using the means means and standard deviation stds vectors specified. An optional input options is an options structure with the field:
rx = rescale(x,means) rescales a mean centered matrix x using a vector of means.
rx = rescale(x,means,stds) rescales an autoscaled matrix x using a vector of means, and vector of standard deviations stds.
Options
- stdthreshold: [ 0 ] scalar value or vector of standard deviation threshold values. If a standard deviation is below its corresponding threshold value, the threshold value will be used in lieu of the actual value. A scalar value is used as a threshold for all variables.
See Also
auto, medcn, mncn, npreprocess, preprocess, scale