关于多重比较矫正报错的咨询

尊敬的严教授及您的团队,我在进行two sample ttest时遇到了困难,请问老师是怎么回事?如何解决?
Warning: Rank deficient, rank = 2, tol =  1.687539e-14. 
> In palm_core at 1413
  In palm at 81
  In y_GroupAnalysis_PermutationTest_Image at 123
  In y_TTest2_Image at 92
  In DPABI_STAT_TOOL>ComputeButton_Callback at 531
  In gui_mainfcn at 96
  In DPABI_STAT_TOOL at 42
  In @(hObject,eventdata)DPABI_STAT_TOOL('ComputeButton_Callback',hObject,eventdata,guidata(hObject))
以上错误是因为我样本量的原因导致的吗?我是样本一组24一组52.
 
Warning: Matrix is singular to working precision. 
> In palm_core>fastt3d at 2757
  In palm_core at 1469
  In palm at 81
  In y_GroupAnalysis_PermutationTest_Image at 123
  In y_TTest2_Image at 92
  In DPABI_STAT_TOOL>ComputeButton_Callback at 531
  In gui_mainfcn at 96
  In DPABI_STAT_TOOL at 42
  In @(hObject,eventdata)DPABI_STAT_TOOL('ComputeButton_Callback',hObject,eventdata,guidata(hObject)
这个问题是在之后出现的。

不选置换检验可以执行分析吗?

不把GMD加进去covariate images的时候不会出错,可以运行,一加进去就不行了。

你的GMD加进去,会有共线性问题。