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cmidega
‎02-17-2019
  • 4 Posts
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Re: isomeric log ratio transformation for compositional data

by Calcite | Level 5 in Statistical Procedures
‎02-14-2019 07:08 AM
‎02-14-2019 07:08 AM
Dear Rick, Thank you. The data represent proportions of time spent by a parasitic wasp in three different olfactometer arms and by all means the data is compositional. I intend to run ANOVA but think this should be run on log ratio transformed data. Kindly help Regards   ... View more

isomeric log ratio transformation for compositional data

by Calcite | Level 5 in Statistical Procedures
‎02-14-2019 03:20 AM
‎02-14-2019 03:20 AM
Hi, How does one construct a procure statement for isomeric log ratio transformation for compositional data? Example below   Time spent by a parasitic wasp in each arm of an olfactometer     Treatment (olfactometer arm) Proportion time (sec) Treated with extract1 20.84 Treated with extract1 6.64 Treated with extract1 29.61 Treated with extract1 23.44 Treated with extract1 32.47 Treated with extract1 23.82 Treated with extract1 32.97 Treated with extract2 15.83 Treated with extract2 12.32 Treated with extract2 18.38 Treated with extract2 30.44 Treated with extract2 30.08 Treated with extract2 30.38 Treated with extract2 24.45 Blank control 15.83 Blank control 63.33 Blank control 81.04 Blank control 52.01 Blank control 46.12 Blank control 37.45 Blank control 45.81 ... View more

Isemeric log ratio transformation

by Calcite | Level 5 in Statistical Procedures
‎02-14-2019 03:18 AM
‎02-14-2019 03:18 AM
Hi, How does one construct a procure statement for isomeric log ratio transformation for compositional data? Example below   Time spent by a parasitic wasp in each arm of an olfactometer     Treatment (olfactometer arm) Proportion time (sec) Treated with extract1 20.84 Treated with extract1 6.64 Treated with extract1 29.61 Treated with extract1 23.44 Treated with extract1 32.47 Treated with extract1 23.82 Treated with extract1 32.97 Treated with extract2 15.83 Treated with extract2 12.32 Treated with extract2 18.38 Treated with extract2 30.44 Treated with extract2 30.08 Treated with extract2 30.38 Treated with extract2 24.45 Blank control 15.83 Blank control 63.33 Blank control 81.04 Blank control 52.01 Blank control 46.12 Blank control 37.45 Blank control 45.81   ... View more

Isomeric logratio transformation procedure

by Calcite | Level 5 in Statistical Procedures
‎02-14-2019 03:06 AM
‎02-14-2019 03:06 AM
Hi, How does one construct a procure statement for isomeric log ratio transformation for compositional data? ... View more
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