Yscale and Data Editing Scaling and Preprocessing: Difference between pages

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===Purpose===
===Data Editing, Scaling, and Preprocessing===
Rescale the y-axis limits on each subplot in a figure.
:[[preprocess]] - Selection and application of standard preprocessing structures.
===Synopsis===
:[[preprouser]] - User-defined preprocessing methods.
:yscale(infscale,xrange,allaxes)
:[[editds]] - Editor for DataSet Objects.
:ax = yscale(infscale,xrange,allaxes)
===Description===
Each axes on a subplot is rescaled so that the y-scale tightly fits the maximum and minimum of the displayed data. The input infscale, when set to 1 (one), also rescales each line object on each axes to tightly fit the new limits (i.e. inf-scales each line object relative to one another). Default is 0 scale axis to data. The input xrange uses the specified x-axis range for scaling rather than the current axis settings.
====Baselining and Offset Correction====
If the single output ax is requested, the plots are not rescaled, but the axis which would have been used is returned.
:[[baseline]] - Subtracts a polynomial baseline offset from spectra.
The optional third input allaxes rescales the specified axis or axes handles. Default is to rescale all axes.
:[[baselinew]] - Baseline using windowed polynomial filter.
:[[wlsbaseline]] - Weighted least squares baseline function.
:[[mscorr]] - Multiplicative scatter/signal correction (MSC).
:[[savgol]] - Savitzky-Golay smoothing and differentiation.
:[[lsq2top]] - Fits a polynomial to the top/(bottom) of data.
:[[med2top]] - Fits a constant to top/(bottom) of data.
====Derivatives and Smoothing====
:[[savgol]] - Savitzky-Golay smoothing and differentiation.
:[[polyinterp]] - Polynomial interpolation, smoothing, and differentiation.
====Sample-wise scaling corrections (Normalizing)====
:[[mscorr]] - Multiplicative scatter/signal correction (MSC).
:[[normaliz]] - Normalize rows of matrix.
:[[snv]] - Standard normal variate scaling.
====Variable-wise scaling and offset corrections====
:[[auto]] - Autoscales matrix to mean zero unit variance.
:[[mncn]] - Scale matrix to mean zero.
:[[medcn]] - Median center scales matrix to median zero.
:[[logdecay]] - Mean centers and variance scales a matrix using the log decay of the variable axis.
:[[scale]] - Scales data using specified means and std. devs.
:[[rescale]] - Scales data back to original scaling.
:[[gscale]] - Group/block scaling for a single or multiple blocks.
:[[gscaler]] - Applies group/block scaling to submatrices of a single matrix.
====Interference Removal and Missing Data====
:[[glsw]] - Generalized least-squares weighting/preprocessing.
:[[mdcheck]] - Missing Data Checker and infiller.
:[[osccalc]] - Calculates orthogonal signal correction (OSC).
====Sample and Variable handling====
:[[coadd]] - Reduce resolution through combination of adjacent variables or samples.
:[[delsamps]] - Deletes samples (rows) or variables (columns) from data matrices.
:[[excludemissing]] - Automatically exclude too-much missing data in a matrix.
:[[lamsel]] - Determines indices of wavelength axes in specified ranges.
:[[shuffle]] - Randomly re-orders matrix and multiple blocks rows.
:[[specedit]] - GUI for selecting spectral regions on a plot.
:[[unfoldm]] - Rearranges (unfolds) an augmented matrix to row vectors.
:[[unfoldmw]] - Unfolds multiway arrays along specified order.
:[[batchdigester]] - Parse wafer or batch data into MPCA or Summary PCA form.

Revision as of 09:57, 2 September 2008

Data Editing, Scaling, and Preprocessing

preprocess - Selection and application of standard preprocessing structures.
preprouser - User-defined preprocessing methods.
editds - Editor for DataSet Objects.


Baselining and Offset Correction

baseline - Subtracts a polynomial baseline offset from spectra.
baselinew - Baseline using windowed polynomial filter.
wlsbaseline - Weighted least squares baseline function.
mscorr - Multiplicative scatter/signal correction (MSC).
savgol - Savitzky-Golay smoothing and differentiation.


lsq2top - Fits a polynomial to the top/(bottom) of data.
med2top - Fits a constant to top/(bottom) of data.

Derivatives and Smoothing

savgol - Savitzky-Golay smoothing and differentiation.
polyinterp - Polynomial interpolation, smoothing, and differentiation.

Sample-wise scaling corrections (Normalizing)

mscorr - Multiplicative scatter/signal correction (MSC).
normaliz - Normalize rows of matrix.
snv - Standard normal variate scaling.

Variable-wise scaling and offset corrections

auto - Autoscales matrix to mean zero unit variance.
mncn - Scale matrix to mean zero.
medcn - Median center scales matrix to median zero.
logdecay - Mean centers and variance scales a matrix using the log decay of the variable axis.
scale - Scales data using specified means and std. devs.
rescale - Scales data back to original scaling.
gscale - Group/block scaling for a single or multiple blocks.
gscaler - Applies group/block scaling to submatrices of a single matrix.

Interference Removal and Missing Data

glsw - Generalized least-squares weighting/preprocessing.
mdcheck - Missing Data Checker and infiller.
osccalc - Calculates orthogonal signal correction (OSC).

Sample and Variable handling

coadd - Reduce resolution through combination of adjacent variables or samples.
delsamps - Deletes samples (rows) or variables (columns) from data matrices.
excludemissing - Automatically exclude too-much missing data in a matrix.
lamsel - Determines indices of wavelength axes in specified ranges.
shuffle - Randomly re-orders matrix and multiple blocks rows.
specedit - GUI for selecting spectral regions on a plot.


unfoldm - Rearranges (unfolds) an augmented matrix to row vectors.
unfoldmw - Unfolds multiway arrays along specified order.
batchdigester - Parse wafer or batch data into MPCA or Summary PCA form.
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