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| cen.sir | estimate SIR direction of survival time |
| double.slice | double slice both censored data and un-censored data |
| edr.n | get e.d.r. directions |
| edr.percent | get e.d.r. directions |
| eigen.decomp | eigenvalue decompsition of one matrix with respect to the other matrix |
| plot.3d.sir | 3d plot of response vs. two sir directions |
| plot.csir | 2d plot of response variable and one direction |
| plot.ds | 2d plot of response variable and one direction |
| plot.sir | 2d plot of response variable and one direction |
| print.csir | print out the object of class csir |
| print.ds | print out the object of class ds |
| sir.test | test how many sir directions are significant |