| mni.vertex.power.analysis {mni.cortical.statistics} | R Documentation |
Given a standard deviation at every vertex this function computes the statistical power both in the form of the n required to recapture a change of delta, or the delta required to recapture a change of n. Basically a wrapper to power.t.test.
mni.vertex.power.analysis(std.file, n=25, alpha=0.005, power=0.995, delta=0.5)
std.file |
A text file with one line per vertex containing the standard deviations at each vertex. |
n |
The number of subjects to compute the power for. |
alpha |
The threshold at which to compute the power. |
power |
The power to use in the computation. |
delta |
The change required in the power computation. |
power.t.test.
mni.read.glim.file.
mni.build.data.table.
mni.vertex.statistics.
mni.write.vertex.stats.