CST_MultiMetric {CSTools} | R Documentation |

## Multiple Metrics applied in Multiple Model Anomalies

### Description

This function calculates correlation (Anomaly Correlation Coefficient; ACC), root mean square error (RMS) and the root mean square error skill score (RMSSS) of individual anomaly models and multi-models mean (if desired) with the observations.

### Usage

```
CST_MultiMetric(
exp,
obs,
metric = "correlation",
multimodel = TRUE,
time_dim = "ftime",
memb_dim = "member",
sdate_dim = "sdate"
)
```

### Arguments

`exp` |
An object of class |

`obs` |
An object of class |

`metric` |
A character string giving the metric for computing the maximum skill. This must be one of the strings 'correlation', 'rms', 'rmsss' and 'rpss'. If 'rpss' is chossen the terciles probabilities are evaluated. |

`multimodel` |
A logical value indicating whether a Multi-Model Mean should be computed. |

`time_dim` |
Name of the temporal dimension where a mean will be applied. It can be NULL, the default value is 'ftime'. |

`memb_dim` |
Name of the member dimension. It can be NULL, the default value is 'member'. |

`sdate_dim` |
Name of the start date dimension or a dimension name identifiying the different forecast. It can be NULL, the default value is 'sdate'. |

### Value

An object of class `s2dv_cube`

containing the statistics of the
selected metric in the element `$data`

which is a list of arrays: for the
metric requested and others for statistics about its signeificance. The arrays
have two dataset dimensions equal to the 'dataset' dimension in the
`exp$data`

and `obs$data`

inputs. If `multimodel`

is TRUE, the
first position in the first 'nexp' dimension correspons to the Multi-Model Mean.

### Author(s)

Mishra Niti, niti.mishra@bsc.es

Perez-Zanon Nuria, nuria.perez@bsc.es

### References

Mishra, N., Prodhomme, C., & Guemas, V. (n.d.). Multi-Model Skill Assessment of Seasonal Temperature and Precipitation Forecasts over Europe, 29-31. doi: 10.1007/s00382-018-4404-z

### See Also

### Examples

```
mod <- rnorm(2*2*4*5*2*2)
dim(mod) <- c(dataset = 2, member = 2, sdate = 4, ftime = 5, lat = 2, lon = 2)
obs <- rnorm(1*1*4*5*2*2)
dim(obs) <- c(dataset = 1, member = 1, sdate = 4, ftime = 5, lat = 2, lon = 2)
lon <- seq(0, 30, 5)
lat <- seq(0, 25, 5)
coords <- list(lat = lat, lon = lon)
exp <- list(data = mod, coords = coords)
obs <- list(data = obs, coords = coords)
attr(exp, 'class') <- 's2dv_cube'
attr(obs, 'class') <- 's2dv_cube'
a <- CST_MultiMetric(exp = exp, obs = obs)
```

*CSTools*version 5.2.0 Index]