[R] Extract time and state of charge (Start and End) and Count

[roslinazairimah zakaria]

Dear all,

I have data of Battery Electric vehicle (BEV). I would like to extract data
from every hour starting from 0.00 to 0.59, 1:00-1:59 for SOC(state of
charge) start to end.

Some examples:
I can extract data from SOC=0 and SOC=12
dt_2014[which(dt_2014$Starting_SoC_of_12==0 &
dt_2014$Ending_SoC_of_12==12),]

I can extract data from SOC=1 and SOC=12
dt_2014[which(dt_2014$Starting_SoC_of_12==1 &
dt_2014$Ending_SoC_of_12==12),]

and I would like to further categorise the data by hour and count how many
cars from 0 state charge to 12 state charge at in that particular hour.

Thank you so much for any help given.

Some data
> dput(dt_2014[1:10,])
structure(list(ï..CarID = c("GC10", "GC10", "GC10", "GC10", "GC10",
"GC10", "GC10", "GC10", "GC10", "GC10"), BatteryChargeStartDate =
c("16/2/2014 16:05",
"16/2/2014 18:20", "17/2/2014 8:10", "18/2/2014 7:41", "18/2/2014 15:36",
"18/2/2014 16:36", "18/2/2014 21:26", "19/2/2014 8:57", "19/2/2014 21:08",
"20/2/2014 18:11"), BCStartTime = c("16:05", "18:20", "8:10",
"7:41", "15:36", "16:36", "21:26", "8:57", "21:08", "18:11"),
    Year = c(2014L, 2014L, 2014L, 2014L, 2014L, 2014L, 2014L,
    2014L, 2014L, 2014L), Month = c(2L, 2L, 2L, 2L, 2L, 2L, 2L,
    2L, 2L, 2L), Day = c(16L, 16L, 17L, 18L, 18L, 18L, 18L, 19L,
    19L, 20L), BatteryChargeStopDate = c("16/2/2014 17:05", "16/2/2014
19:00",
    "17/2/2014 15:57", "18/2/2014 9:52", "18/2/2014 15:39", "18/2/2014
17:36",
    "19/2/2014 1:55", "19/2/2014 14:25", "20/2/2014 5:17", "20/2/2014 23:20"
    ), BCStopTime = c("17:05", "19:00", "15:57", "9:52", "15:39",
    "17:36", "1:55", "14:25", "5:17", "23:20"), Year2 = c(2014L,
    2014L, 2014L, 2014L, 2014L, 2014L, 2014L, 2014L, 2014L, 2014L
    ), Month2 = c(2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L), Day2 = c(16L,
    16L, 17L, 18L, 18L, 18L, 19L, 19L, 20L, 20L), Starting_SoC_of_12 =
c(1L,
    2L, 4L, 5L, 4L, 2L, 8L, 8L, 4L, 8L), Ending_SoC_of_12 = c(11L,
    11L, 12L, 8L, 4L, 10L, 12L, 12L, 12L, 12L)), row.names = c(NA,
10L), class = "data.frame")


-- 
*Roslinazairimah Zakaria*
*Tel: +609-5492370; Fax. No.+609-5492766*

*Email: roslinaump using gmail.com <roslinaump using gmail.com>*
University Malaysia Pahang
Lebuhraya Tun Razak, 26300 Gambang, Pahang, Malaysia

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