Re: [R] an error message with 't.test' with R under Unix
Tao Shi [EMAIL PROTECTED] writes: Again, I don't see the error in R under Windows (R 2.3.0) or Unix (R2.3.1). Is this the bug you were talking about? CHANGES IN R VERSION 2.3.0 o Some of the classical tests put unnecessary restrictions on the LHS in the formula interface (e.g., t.test(x+y ~ g) was not allowed). -- O__ Peter Dalgaard Øster Farimagsgade 5, Entr.B c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~ - ([EMAIL PROTECTED]) FAX: (+45) 35327907 __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] an error message with 't.test' with R under Unix
Hi list,Could you please help me to explain the following error messages with 't.test' in R Unix 2.1.1? I don't see it in R under Windows (R 2.3.0) or Unix (R2.3.1). Is it really due to the different R versions?Thanks,...TaoUnix session: (R.2.1.1) R.version _ platform x86_64-unknown-linux-gnuarch x86_64 os linux-gnu system x86_64, linux-gnu status major2 minor1.1 year 2005month06 day 20 language Rt.test(extra ~ group, data = sleep)Welch Two Sample t-testdata: extra by group t = -1.8608, df = 17.776, p-value = 0.0794alternative hypothesis: true difference in means is not equal to 0 95 percent confidence interval: -3.3654832 0.2054832 sample estimates:mean in group 1 mean in group 2! 0.752.33 t.test((1:6)~rep(1:2,each=3))Error in terms.formula(formula[-3]) : invalid model formula in ExtractVars t.test(2^(1:6)~rep(1:2,each=3))Error in terms.formula(formula[-3]) : invalid power in formula t.test(2^extra ~ group, data = sleep)Error in terms.formula(formula[-3]) : invalid power in formulaUnix session: (R 2.3.1) R.version _ platform x86_64-unknown-linux-gnu arch x86_64 os linux-gnu system x86_64, linux-gnu status major 2 minor 3.1 year 2006 month 06day 01svn rev38247 language R version.string Version 2.3.1 (2006-06-01) t.test(1:6~rep(1:2,each=! 3))Welch Two Sample t-testdata: 1:6 by rep(1:2, each = 3) t = -3.6742, df = 4, p-value = 0.02131alternative hypothesis: true difference in means is not equal to 0 95 percent confidence interval: -5.266958 -0.733042 sample estimates:mean in group 1 mean in group 2 2 5 Windows session:=== R.version _ platform i386-pc-mingw32 arch i386 os mingw32 system i386, mingw32 status major 2 minor 3.0 year 2006 month 04day 24svn rev37909 language R version.string Version 2.3.0 (2006-04-24) help(t.test) t.test(extra ~ group, data = sleep)Welch Two Sample t-testdata: extra by group t = -1.8608, df = 17.7! 76, p-value = 0.0794alternative hypothesis: true difference in means is not equal to 0 95 percent confidence interval: -3.3654832 0.2054832 sample estimates:mean in group 1 mean in group 20.752.33 t.test(2^extra ~ group, data = sleep)Welch Two Sample t-testdata: 2^extra by group t = -1.6362, df = 10.718, p-value = 0.1308alternative hypothesis: true difference in means is not equal to 0 95 percent confidence interval: -18.641557 2.773344 sample estimates:mean in group 1 mean in group 23.448644 11.382751 t.test(1:6~rep(1:2,each=3))Welch Two Sample t-testdata: 1:6 by rep(1:2, each = 3) t = -3.6742, df = 4, p-value = 0.02131alternative hypothesis: true difference in means is not equal to 0 95 percent confidence interval: -5.266958 -0.733042 sample estimates:mean in group 1 mean in group 2 2 5 _ Use Messenger to talk to your IM friends, even those on Yahoo! 685ee3e858fe [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] an error message with 't.test' with R under Unix
Tao Shi [EMAIL PROTECTED] writes: Hi list,Could you please help me to explain the following error messages with 't.test' in R Unix 2.1.1? This is completely unreadable! However, yes, there was at some point a bug where the LHS of model formulas was checked more rigorously than need be, using the same rules that apply to the RHS. This fact can be found in a recent NEWS file. I don't see it in R under Windows (R 2.3.0) or Unix (R2.3.1). Is it really due to the different R versions?Thanks,...TaoUnix session: (R.2.1.1) R.version _ platform x86_64-unknown-linux-gnuarch x86_64 os linux-gnu system x86_64, linux-gnu status major2 minor1.1 year 2005month06 day 20 language Rt.test(extra ~ group, data = sleep)Welch Two Sample t-testdata: extra by group t = -1.8608, df = 17.776, p-value = 0.0794alternative hypothesis: true difference in means is not equal to 0 95 percent confidence interval: -3.3654832 0.2054832 sample estimates:mean in group 1 mean in group 2! 0.752.33 t.test((1:6)~rep(1:2,each=3))Error in terms.formula(formula[-3]) : invalid model formula in ExtractVars t.test(2^(1:6)~rep(1:2,each=3))Error in terms.formula(formula[-3]) : invalid power in formula t.test(2^extra ~ group, data = sleep)Error in terms.formula(formula[-3]) : invalid power in formulaUnix session: (R 2.3.1) R.version _ platform x86_64-unknown-linux-gnu arch x86_64 os linux-gnu system x86_64, linux-gnu status major 2 minor 3.1 year 2006 month 06day 01svn rev38247 language R version.string Version 2.3.1 (2006-06-01) t.test(1:6~rep(1:2,each =! 3))Welch Two Sample t-testdata: 1:6 by rep(1:2, each = 3) t = -3.6742, df = 4, p-value = 0.02131alternative hypothesis: true difference in means is not equal to 0 95 percent confidence interval: -5.266958 -0.733042 sample estimates:mean in group 1 mean in group 2 2 5 Windows session:=== R.version _ platform i386-pc-mingw32 arch i386 os mingw32 system i386, mingw32 status major 2 minor 3.0 year 2006 month 04 day24svn rev37909 language R version.string Version 2.3.0 (2006-04-24) help(t.test) t.test(extra ~ group, data = sleep)Welch Two Sample t-testdata: extra by group t = -1.8608, df = 17. 7! 76, p-value = 0.0794alternative hypothesis: true difference in means is not equal to 0 95 percent confidence interval: -3.3654832 0.2054832 sample estimates:mean in group 1 mean in group 20.752.33 t.test(2^extra ~ group, data = sleep)Welch Two Sample t-testdata: 2^extra by group t = -1.6362, df = 10.718, p-value = 0.1308alternative hypothesis: true difference in means is not equal to 0 95 percent confidence interval: -18.641557 2.773344 sample estimates:mean in group 1 mean in group 23.448644 11.382751 t.test(1:6~rep(1:2,each=3)) Welch Two Sample t-testdata: 1:6 by rep(1:2, each = 3) t = -3.6742, df = 4, p-value = 0.02131alternative hypothesis: true difference in means is not equal to 0 95 percent confidence interval: -5.266958 -0.733042 sample estimates:mean in group 1 mean in group 2 2 5 _ Use Messenger to talk to your IM friends, even those on Yahoo! 685ee3e858fe [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. -- O__ Peter Dalgaard Øster Farimagsgade 5, Entr.B c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
Re: [R] an error message with 't.test' with R under Unix
Hi Peter, Thank you for the reply! Really sorry for the formating (forgot to change to plain text). Here is basically what I'm talking about: R.version _ platform x86_64-unknown-linux-gnu arch x86_64 os linux-gnu system x86_64, linux-gnu status major2 minor1.1 year 2005 month06 day 20 language R t.test(1:6~rep(1:2,each=3)) Error in terms.formula(formula[-3]) : invalid model formula in ExtractVars Again, I don't see the error in R under Windows (R 2.3.0) or Unix (R2.3.1). Is this the bug you were talking about? ...Tao To: [EMAIL PROTECTED] CC: r-help@stat.math.ethz.ch Subject: Re: [R] an error message with 't.test' with R under Unix From: [EMAIL PROTECTED] Date: Wed, 13 Sep 2006 23:52:04 +0200 Tao Shi [EMAIL PROTECTED] writes: Hi list,Could you please help me to explain the following error messages with 't.test' in R Unix 2.1.1? This is completely unreadable! However, yes, there was at some point a bug where the LHS of model formulas was checked more rigorously than need be, using the same rules that apply to the RHS. This fact can be found in a recent NEWS file. I don't see it in R under Windows (R 2.3.0) or Unix (R2.3.1). Is it really due to the different R versions?Thanks,...TaoUnix session: (R.2.1.1) R.version _ platform x86_64-unknown-linux-gnuarch x86_64 os linux-gnu system x86_64, linux-gnu status major2 minor1.1 year 2005month06 day 20 language Rt.test(extra ~ group, data = sleep)Welch Two Sample t-testdata: extra by group t = -1.8608, df = 17.776, p-value = 0.0794alternative hypothesis: true difference in means is not equal to 0 95 percent confidence interval: -3.3654832 0.2054832 sample estimates:mean in group 1 mean in group 2 ! 0.752.33 t.test((1:6)~rep(1:2,each=3))Error in terms.formula(formula[-3]) : invalid model formula in ExtractVars t.test(2^(1:6)~rep(1:2,each=3))Error in terms.formula(formula[-3]) : invalid power in formula t.test(2^extra ~ group, data = sleep)Error in terms.formula(formula[-3]) : invalid power in formulaUnix session: (R 2.3.1) R.version _ platform x86_64-unknown-linux-gnu arch x86_64 os linux-gnu system x86_64, linux-gnu status major 2 minor 3.1 year 2006 month 06 day01svn rev38247 language R version.string Version 2.3.1 (2006-06-01) t.test(1:6~rep(1:2,each =! 3))Welch Two Sample t-testdata: 1:6 by rep(1:2, each = 3) t = -3.6742, df = 4, p-value = 0.02131alternative hypothesis: true difference in means is not equal to 0 95 percent confidence interval: -5.266958 -0.733042 sample estimates:mean in group 1 mean in group 2 2 5 Windows session:=== R.version _ platform i386-pc-mingw32 arch i386 os mingw32 system i386, mingw32 status major 2 minor 3.0 year 2006 month 04day24svn rev 37909 language R version.string Version 2.3.0 (2006-04-24) help(t.test) t.test(extra ~ group, data = sleep)Welch Two Sample t-testdata: extra by group t = -1.8608, df = 17. 7! 76, p-value = 0.0794alternative hypothesis: true difference in means is not equal to 0 95 percent confidence interval: -3.3654832 0.2054832 sample estimates:mean in group 1 mean in group 20.752.33 t.test(2^extra ~ group, data = sleep)Welch Two Sample t-testdata: 2^extra by group t = -1.6362, df = 10.718, p-value = 0.1308alternative hypothesis: true difference in means is not equal to 0 95 percent confidence interval: -18.641557 2.773344 sample
