Summary data for hemispherical camera data.

Source: R/fd_remote_sensing.R

Summary data for hemispherical camera data.

fd_hemi_camera_summary()

Value

A data.frame or tibble. See "Details" for column descriptions.

Details

The columns are as follows:

  • replicate (character): Replicate code, extracted from SubplotID.

  • plot (integer): Plot ID number, extracted from SubplotID.

  • subplot (character): Subplot code, extracted from SubplotID.

  • date (date): Date of measurement

  • lai_cam (numeric): mean of leaf area index

  • lai_cam_sd (numeric): sd of leaf area index

  • lai_cam_n (integer): number of observations per sample

  • lai_cam_se (numeric): se of leaf area index

  • ndvi (numeric): mean of plot ndvi

  • ndvi_sd (numeric): sd of plot ndvi

  • ndvi_n (numeric): number of observations per sample

  • ndvi_se (numeric): se of plot ndvi

Note

For now this is pretty basic. More detailed summaries could be made, e.g. by live/dead, species, etc.

Author

Measurements by Jeff Atkins at the University of Michigan Biological Station.

Examples

fd_hemi_camera_summary()

#> These data are unpublished. Please contact Jeff Atkins to ask about using
#> Data citation: ESSD
#> Contact person: Jeff Atkins
#> # A tibble: 230 x 11
#>    replicate  plot subplot date       lai_cam lai_cam_sd lai_cam_n lai_cam_se
#>    <chr>     <int> <chr>   <date>       <dbl>      <dbl>     <int>      <dbl>
#>  1 A             1 E       2018-07-11    3.31      0.250         5     0.112 
#>  2 A             1 E       2018-07-23    3.31      0.250         5     0.112 
#>  3 A             1 E       2019-07-08    3.13      0.255         8     0.0903
#>  4 A             1 E       2019-07-12    2.88      0.267         5     0.119 
#>  5 A             1 E       2019-07-16    2.91      0.537         6     0.219 
#>  6 A             1 E       2019-07-24    2.96      0.454         5     0.203 
#>  7 A             1 E       2019-08-02    2.44      0.488         5     0.218 
#>  8 A             1 W       2018-07-11    4.15      0.544         5     0.243 
#>  9 A             1 W       2018-07-23    4.15      0.544         5     0.243 
#> 10 A             1 W       2019-07-08    3.38      0.215         6     0.0877
#> # ... with 220 more rows, and 3 more variables: ndvi <dbl>, ndvi_sd <dbl>,
#> #   ndvi_se <dbl>