sdpar-methods | R Documentation |
This function estimates the parameters of a piecewise linear model for the dependence between error standard deviation and mean.
## S4 method for signature 'dtiData'
sdpar(object,level=NULL,sdmethod="none",interactive=TRUE,threshfactor=1)
object |
An object of class |
level |
Suggested value for slot |
sdmethod |
Method for estimating voxelwise standard deviations if replicates of zero weighted images are available, can be set to |
interactive |
If |
threshfactor |
Factor for threshold-value selected if function is run in interactive mode. May be used to correct results if automatic threshold selection fails. |
The function returns an object of class dtiData
.
Returns a warning
Estimate parameters of a model for the dependence between error standard deviation and mean.
Karsten Tabelow tabelow@wias-berlin.de
J\"org Polzehl polzehl@wias-berlin.de
dtiData
,
readDWIdata
,
dti.smooth
,
dtiTensor
,
## Not run: demo(dti_art)
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