R friends, In a matrix of 1s and 0s, I'm getting a singularity error. Any helpful ideas?
lm(formula = activity ~ metaF + metaCl + metaBr + metaI + metaMe + paraF + paraCl + paraBr + paraI + paraMe) Residuals: Min 1Q Median 3Q Max -4.573e-01 -7.884e-02 3.469e-17 6.616e-02 2.427e-01 Coefficients: (1 not defined because of singularities) Estimate Std. Error t value Pr(>|t|) (Intercept) 7.9173 0.1129 70.135 < 2e-16 *** metaF -0.3973 0.2339 -1.698 0.115172 metaCl NA NA NA NA metaBr 0.3454 0.1149 3.007 0.010929 * metaI 0.4827 0.2339 2.063 0.061404 . metaMe 0.3654 0.1149 3.181 0.007909 ** paraF 0.7675 0.1449 5.298 0.000189 *** paraCl 0.3400 0.1449 2.347 0.036925 * paraBr 1.0200 0.1449 7.040 1.36e-05 *** paraI 1.3327 0.2339 5.697 9.96e-05 *** paraMe 1.2191 0.1573 7.751 5.19e-06 *** --- Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1 Residual standard error: 0.2049 on 12 degrees of freedom Multiple R-squared: 0.9257, Adjusted R-squared: 0.8699 F-statistic: 16.61 on 9 and 12 DF, p-value: 1.811e-05 ______________________________________________ R-help@r-project.org 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.