如何查看R包adehabitat中widesII输出的个体选择比率表格？

Hey there! I’ve run into this exact situation before with adehabitat’s widesII() function—great catch that the default output only shows global averages, even though the plot function clearly uses individual-level data. Here’s how you can pull those individual selection ratios into a usable table:

1. Save the widesII() output to a variable
   First, make sure you store the result of your widesII() call instead of just running it directly. For example:

   # Replace with your actual data and parameters
   my_selection <- widesII(used = my_used_data, available = my_available_data, ...)
   

2. Dig into the object’s structure
   The widesII() output is a list that holds more data than it prints by default. Run str(my_selection) to see all components—you’ll notice a section called $reluse; this is where the individual selection ratios live.

3. Extract the individual ratios as a table
   You can directly pull this component and convert it to a data frame for easy viewing:

   # Get the individual selection ratios matrix
   individual_ratios_matrix <- my_selection$reluse
   # Convert to a data frame for cleaner formatting
   individual_ratios_df <- as.data.frame(individual_ratios_matrix)
   

   This data frame will have resources as rows and individual animals as columns, with each cell holding the selection ratio for that individual-resource pair.

4. Optional: Reshape for readability
   If you prefer a long-format table (one row per individual-resource combination), use the tidyr package to pivot it:

   library(tidyr)
   long_ratios <- pivot_longer(
     individual_ratios_df,
     cols = everything(),
     names_to = "Individual_ID",
     values_to = "Selection_Ratio"
   )
   # Add resource names as a column
   long_ratios$Resource <- rownames(individual_ratios_df)
   

The plot function you’re using under the hood is accessing this same $reluse component to generate individual line graphs, so this gives you the exact numerical values behind those plots.

内容的提问来源于stack exchange，提问作者user9447153