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en:monte_carlo_examples [2018/05/05 07:41]
David Zelený [Example 2: Effect of environmental variables on species composition of plants in Carpathian wetlands tested by tb-RDA]
en:monte_carlo_examples [2019/01/26 20:00]
David Zelený
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-====== ​Constrained ordination ​====== +====== ​Ordination analysis ​====== 
-===== Monte Carlo permutation test =====+===== Monte Carlo permutation test (constrained ordination) ​===== 
 [[{|width: 7em; background-color:​ white; color: navy}monte_carlo|Theory]] [[{|width: 7em; background-color:​ white; color: navy}monte_carlo|Theory]]
 [[{|width: 7em; background-color:​ white; color: navy}monte_carlo_R|R functions]] [[{|width: 7em; background-color:​ white; color: navy}monte_carlo_R|R functions]]
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 Cl       1 0.006910560 ​ 0.8383942 ​ 0.736 Cl       1 0.006910560 ​ 0.8383942 ​ 0.736
 </​code>​ </​code>​
-Some variables (at the bottom of the table) ​does not explain significant part of variance, some does (with calcium, ''​Ca'',​ explaining the most). What I did is in fact the first step of forward selection, which aims to select the subset of variables ​which explain the most variance in the model (in the first step the variables are sorted by explained variance, the first of them is tested, and if significant,​ it is included as the first selected variables into the model). This will be the topic for [[en:​forward_sel_examples|Example 1 in Forward selection section]].+Some variables (at the bottom of the table) ​do not explain significant part of variance, some do (with calcium, ''​Ca'',​ explaining the most). What I did is in fact the first step of forward selection, which aims to select the subset of variables ​that explain the most variance in the model (in the first step the variables are sorted by explained variance, the first of them is tested, and if significant,​ it is included as the first selected variables into the model). This will be the topic for [[en:​forward_sel_examples|Example 1 in Forward selection section]].
  
  
en/monte_carlo_examples.txt · Last modified: 2019/02/10 16:04 by David Zelený