[R] model frame and formula mismatch in model.matrix()

jul 2-pom j.pompon at ibmc-cnrs.unistra.fr
Fri Apr 12 21:05:43 CEST 2013


Hello everyone,

I am trying to fit the following model
All X. variables are continuous, while the conditions are categoricals.

model <- lm(X2
+X3+X4+X5+X6+X7+X8+X9+X10+X11+X12+X13+X14+X15+X16+X17+X18+X19+X20+X21+X22+X23+X24+X25+X26+X27+X28+X29+X30+X31+X32+X33+X34+X35+X36+X37+X38+X39+X40+X41+X42+X43+X44+X45+X46+X47+X48+X49+X50+X51+X52+X53+X54+X55+X56+X57+X58+X59+X60+X61+X62+X63+X64+X65+X66+X67+X68+X69+X70+X71+X72+X73+X74+X75+X76+X77+X78+X79+X80+X81+X82+X83+X84+X85+X86+X87+X88+X89+X90+X91+X92+X93+X94+X95+X96+X97+X98+X99+X100+X101+X102+X103+X104+X105+X106+X107+X108+X109+X110+X111+X112+X113+X114+X115+X116+X117+X118+X119+X120+X121+X122+X123+X124+X125+X126+X127+X128+X129+X130+X131+X132+X133+X134+X135+X136+X137+X138+X139+X140+X141+X142+X143+X144+X145+X146+X147+X148+X149+X150+X151+X152
~ conditions, data = proteo)

but I get this error message:

Error in model.matrix.default(mt, mf, contrasts) : 
  model frame and formula mismatch in model.matrix()

can someone help me please?

Julien.



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