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Error in Commands

I just couldn't understand what is the error in this command please help me out....

fit = lmFit(gse21340eset, design_gse21340)

when I run it I got this error

Coefficients not estimable: control.FH control.noFH rep.control.FH T2D.FH 
Error in lm.fit(design, t(M)) : 0 (non-NA) cases

what does this error means and where is error in above mentioned command??

r limma affy

What does design_gse21340 look like? It has some excess columns.

yes it has excess columns

can you please let me know what does this command means?

What does what command mean?

fit = lmFit(gse21340eset, design_gse21340)

this one..

In R, the following will tell you everything you need to know about the comment:

?lmFit

what will let me know everything?

How can I learn it quickly any shortcut if u have any idea??

Run the command as typed above by @Devon and @decosterwouter while in R. That is how you will get inline help for that command.

Thanx alot fr your help :)

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