I currently work on a draft of an aquatic bioassessment. The conditions tested are the following: ER river water T dechlorinated water control 0.5 + 0.5mg / L of malate T + 1 dechlorinated water control + 1g / L of malate T ED dechlorinated water control SED + ER + river water sediment SED ED + sediment + water dechlorinated. It is the result of AChE in muscle (fillet of fish). The production of acetylcholine is followed with a spectrophotometer every 15 seconds for two minutes. The results are presented in the following table:
traitement t15 t30 t45 t60 t75 t90 t105 t120 ER 0.100 0.110 0.123 0.135 0.147 0.159 0.171 0.182 ER 0.112 0.134 0.153 0.174 0.192 0.208 0.226 0.251 T+0.5 0.078 0.082 0.088 0.094 0.101 0.108 0.113 0.120 t+0.5 0.053 0.100 0.109 0.120 0.127 0.136 0.145 0.154 TED 0.107 0.126 0.141 0.161 0.172 0.184 0.200 0.213 TED 0.117 0.135 0.153 0.169 0.183 0.201 0.218 0.229 TED 0.124 0.145 0.163 0.187 0.208 0.227 0.244 0.259 T+1 0.109 0.119 0.134 0.148 0.163 0.174 0.187 0.202 T+1 0.118 0.134 0.153 0.170 0.184 0.197 0.214 0.228 SED+ER 0.158 0.175 0.194 0.208 0.226 0.240 0.259 0.268 SED+ED 0.119 0.140 0.157 0.174 0.192 0.208 0.225 0.240 SED+ED 0.101 0.113 0.180 0.140 0.154 0.166 0.179 0.190 SED+ED 0.129 0.135 0.140 0.146 0.153 0.159 0.165 0.172 The statistical test is considered a repeated measures anova but I do not know how to do it in R. I watched the forums and I downloaded the R package 'nlme' by which I should be able to use the function 'lm'. But the problem is that I can not encode this function. Could you help me? -- View this message in context: http://r.789695.n4.nabble.com/please-Help-me-on-a-repeated-measures-anova-tp3159868p3159868.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.
