Home/ Questions/Q 8006761
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-04T17:37:14+00:00

I have this time series data: timestamp depth from_sensor_to_river_bottom Depth_from_river_surface_to_bottom 1 2012-05-23 18:30:12-05 16.4

  • 0

I have this time series data:

     "timestamp"          "depth" "from_sensor_to_river_bottom" "Depth_from_river_surface_to_bottom"
"1" "2012-05-23 18:30:12-05" 16.4 17.16 0.760000000000002
"2" "2012-05-23 18:15:08-05" 16.38 17.16 0.780000000000001
"3" "2012-05-23 18:00:03-05" 16.39 17.16 0.77
"4" "2012-05-23 17:45:13-05" 16.35 17.16 0.809999999999999
"5" "2012-05-23 17:30:08-05" 16.37 17.16 0.789999999999999

I am using the following code:

d <- read.table(Name[1], header=TRUE)  #Name[1] is text file containing data

d <- read.zoo(d,
 format="'%Y-%m-%d %H:%M:%S'", 
 FUN=as.POSIXct  )

Its giving me this error:

Error in read.zoo(d, format = "'%Y-%m-%d %H:%M:%S'", FUN = as.POSIXct) : 
 index has 5 bad entries at data rows: 1 2 3 4 5

I wish to get help on this problem.
Thank you for your consideration.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    This works on the data in the post provided its OK to ignore the -05 at the end of each date/time. (To read from a file use something like the commented out line.) 

    Lines <- '"timestamp"          "depth" "from_sensor_to_river_bottom" "Depth_from_river_surface_to_bottom"
"1" "2012-05-23 18:30:12-05" 16.4 17.16 0.760000000000002
"2" "2012-05-23 18:15:08-05" 16.38 17.16 0.780000000000001
"3" "2012-05-23 18:00:03-05" 16.39 17.16 0.77
"4" "2012-05-23 17:45:13-05" 16.35 17.16 0.809999999999999
"5" "2012-05-23 17:30:08-05" 16.37 17.16 0.789999999999999'

library(zoo)
# z <- read.zoo("myfile.txt", tz = "")
z <- read.zoo(text = Lines, tz = "")

    The output from the above code is:

    > z
                    depth from_sensor_to_river_bottom Depth_from_river_surface_to_bottom
2012-05-23 17:30:08 16.37                       17.16                               0.79
2012-05-23 17:45:13 16.35                       17.16                               0.81
2012-05-23 18:00:03 16.39                       17.16                               0.77
2012-05-23 18:15:08 16.38                       17.16                               0.78
2012-05-23 18:30:12 16.40                       17.16                               0.76

    For more info try ?read.zoo and ?read.table and also vignette(“zoo-read”). The last one is an entire document focused on giving read.zoo examples.

    EDIT: Added links to commentary.

    • 0