Medcn: Difference between revisions
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imported>Jeremy |
imported>Scott |
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MEDCN centers a matrix x to it's median and returns a matrix mcx with median zero columns and a vector of medians mx used to center the data. Optional input options is discussed below. | MEDCN centers a matrix x to it's median and returns a matrix mcx with median zero columns and a vector of medians mx used to center the data. Optional input options is discussed below. | ||
The output msg returns any warning messages. | The output <tt>msg</tt> returns any warning messages. | ||
===Options === | ===Options === | ||
Revision as of 14:48, 7 October 2008
Purpose
Median center scales matrix to median zero.
Synopsis
- [mcx,mx,msg] = medcn(x,options)
Description
MEDCN centers a matrix x to it's median and returns a matrix mcx with median zero columns and a vector of medians mx used to center the data. Optional input options is discussed below.
The output msg returns any warning messages.
Options
options = a structure array with the following fields.
- display: [ {'off'} | 'on'] Governs screen display.
- matrix_threshold: {.15} Error threshold based on fraction of missing data in whole matrix.
- column_threshold: {.25} Error threshold based on fraction of missing data in single column.
See Also
auto, mncn, percentile, rescale, scale