Rescale: Difference between revisions
Jump to navigation
Jump to search
imported>Jeremy (Importing text file) |
imported>Jeremy (Importing text file) |
||
| Line 8: | Line 8: | ||
rx = rescale(x,means,''stds'') rescales an autoscaled matrix x using a vector of means, and vector of standard deviations stds. | rx = rescale(x,means,''stds'') rescales an autoscaled matrix x using a vector of means, and vector of standard deviations stds. | ||
===Options=== | ===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. | * '''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=== | ===See Also=== | ||
[[auto]], [[medcn]], [[mncn]], [[npreprocess]], [[preprocess]], [[scale]] | [[auto]], [[medcn]], [[mncn]], [[npreprocess]], [[preprocess]], [[scale]] | ||
Revision as of 20:57, 2 September 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