The result of using read.cm() on a current meter file holding measurements made with an Interocean S4 device. See read.cm() for some general cautionary notes on reading such files. Note that the salinities in this sample dataset are known to be incorrect, perhaps owing to a lack of calibration of an old instrument that had not been used in a long time.

data(cm)

Examples

library(oce)
data(cm)
summary(cm)
#> Cm summary
#> ----------
#> 
#> * File source:   "/Users/kelley/Dropbox/data/archive/sleiwex/2008/moorings/m11/cm/interocean_0811786/manufacturer/cm_interocean_0811786.s4a.tab"
#> * Instr. type:   (2Hz)S4
#> * Serial Num.:   8111786
#> * Version:       2.399
#> * North:         magnetic
#> * Time:          2008-06-26 to 2008-06-26 23:59:00 (1440 samples, mean increment 1 min)
#> * Data Overview
#> 
#>                                    Min.                Mean                Max. Dim.  NAs OriginalName
#>     Sample..                        842              1561.5                2281 1440    0     Sample #
#>     Date                             NA                  NA                  NA 1440    0         Date
#>     Time                             NA                  NA                  NA 1440    0         Time
#>     dec.S                             0                   0                   0 1440    0        dec S
#>     v [m/s]                      -0.862           -0.088736                0.74 1440    0       Vnorth
#>     u [m/s]                      -0.478             0.02761               0.654 1440    0        Veast
#>     Speed                          1.44              53.569               98.29 1440    0        Speed
#>     Dir                               7              126.99               352.1 1440    0          Dir
#>     Vref                             NA                  NA                  NA 1440 1440         Vref
#>     Hx                             -210             -31.052                 177 1440    0           Hx
#>     Hy                             -212            -0.58889                 211 1440    0           Hy
#>     conductivity [mS/cm]           36.8              36.924                37.2 1440    0         Cond
#>     temperature [°C, ITS-90]      1.204              2.0773               3.065 1440    0       T-Temp
#>     Depth                        73.242              74.767              77.148 1440    0        Depth
#>     none                             NA                  NA                  NA 1440 1440         none
#>     none.1                           NA                  NA                  NA 1440 1440         none
#>     Hdg                               0              175.79               359.2 1440    0          Hdg
#>     X                                NA                  NA                  NA 1440 1440            -
#>     salinity [PSS-78]            41.307               42.71              44.205 1440    0          Sal
#>     Dens                         1033.3              1034.5              1035.8 1440    0         Dens
#>     SV                           1467.9              1469.8              1472.2 1440    0           SV
#>     X.1                              NA                  NA                  NA 1440 1440            -
#>     N.S.Dist                    -2535.2              4159.5               10349 1440    0     N-S Dist
#>     E.W.Dist                    -2033.5              893.81              4687.5 1440    0     E-W Dist
#>     X.2                              NA                  NA                  NA 1440 1440            -
#>     SRB.Date                         NA                  NA                  NA 1440 1440     SRB Date
#>     SRB.Time                         NA                  NA                  NA 1440    0     SRB Time
#>     Vref.1                        1.226              1.2263                1.23 1440 1152         Vref
#>     Hx.1                             NA                  NA                  NA 1440 1440           Hx
#>     Hy.1                             NA                  NA                  NA 1440 1440           Hy
#>     Cond.1                           NA                  NA                  NA 1440 1440         Cond
#>     T.Temp.1                         NA                  NA                  NA 1440 1440       T-Temp
#>     Depth.1                          NA                  NA                  NA 1440 1440        Depth
#>     none.2                           NA                  NA                  NA 1440 1440         none
#>     none.3                           NA                  NA                  NA 1440 1440         none
#>     Hdg.1                            NA                  NA                  NA 1440 1440          Hdg
#>     X.3                              NA                  NA                  NA 1440 1440            -
#>     Sal.1                            NA                  NA                  NA 1440 1440          Sal
#>     Dens.1                           NA                  NA                  NA 1440 1440         Dens
#>     SV.1                             NA                  NA                  NA 1440 1440           SV
#>     pressure [dbar]              73.855              75.392              77.794 1440    0            -
#>     time                     2008-06-26 2008-06-26 11:59:30 2008-06-26 23:59:00 1440    0            -
#> 
#> * Processing Log
#> 
#>     - 2023-02-10 12:50:57 UTC: `create 'cm' object`
#>     - 2023-02-10 12:50:57 UTC: `read.oce("~/data/archive/sleiwex/2008/moorings/m11/cm/interocean_0811786/manufacturer/cm_interocean_0811786.s4a.tab", ...)`
#>     - 2023-02-10 12:50:57 UTC: `subset.cm(x, subset=time < as.POSIXct("2008-06-27 00:00:00", tz = "UTC"))`
plot(cm)