The data is from an experiment in a Smarthouse in the Plant Accelerator and is decribed by Watts-Williams et al. (2019). The experiment involves 32 plants, each placed in a pot in a cart, and the carts were assigned 8 treatments using a randomized complete-block design. The main response is Projected Shoot Area (Area for short), being the sum of the plant pixels from three images. The eight treatments were the combinations of 4 Zinc (Zn) levels by two Arbuscular Mycorrhiza Fungi (AMF) levls. Each plant was imaged on 35 different days. It is used to explore the analysis of growth dynamics.
data(tomato.dat)
A data.frame containing 14784 observations on 33 variables. The names of the columns in the data.frame are:
Column | Name | Class | Description |
1 | Lane | factor | |
the Lane in the 2 Lane x 16 Positions grid. | 2 | Position | factor |
the Position in the 2 Lane x 16 Positions grid. | 3 | Days | factor |
the numbers of days after planting on which the current | |||
data was observed. | 4 | Snapshot.ID.Tag | character |
a unique identifier for each cart in the experiment. | 5 | xDays | numeric |
a centered numberic covariate for Days. | 6 | Days.diffs | numeric |
the number of Days between this and the previous | |||
observations (all one for this experiment). | 7 | xPosn | numeric |
a centered numeric covaariate for Positions. | 8 | Block | factor |
the block of the randomized complete-block design to | |||
which the current cart belonged. | 9 | Cart | factor |
the number of the cart within a block. | 10 | AMF | factor |
the AMF treatment (- AMF, +AMF) assigned to the | |||
cart. | 11 | Zn | factor |
the Zinc level (0, 10, 40, 90) assigned to the cart. | 12 | Weight.After | numeric |
the weight of the cart after watering. | 13 | Water.Amount | numeric |
the amount of water added to the cart. | 14 | Water.Loss | numeric |
the amount of water lost since the previous watering. | Column | Name | Class |
Watts-Williams SJ, Jewell N, Brien C, Berger B, Garnett T, Cavagnaro TR (2019) Using high-throughput phenotyping to explore growth responses to mycorrhizal fungi and zinc in three plant species. Plant Phenomics, 2019, 12.