[R] Axis whitout all the row, that contains time
ru|pb@rr@d@@ @end|ng |rom @@po@pt
Sun Feb 14 09:52:31 CET 2021
It's not scale_x_time with arguments breaks and labels.
It's scale_x_datetime with arguments
date_breaks and date_labels.
If you also want the hour displayed in the x axis labels, change the
format string in my previous post to
scale_x_datetime(date_breaks = "20 secs", date_labels = "H:%M:%S")
Can you post as data sample the output of dput?
dput(head(listeMesuresPropres, 20)) # or 30
Hope this helps,
Às 07:35 de 14/02/21, Informatique escreveu:
> the time are in the first table like that : 10:24:00
> and i use this for
> listeMesuresPropres$Heure. <- hms(listeMesuresPropres$Heure.
> after time ar like that : 10H 24M 0S
> and when i use with ggplot
> scale_x_time(breaks = "20 secs",labels = "%H:%M:%S")
> it have the graphics but noting write on the X axis.
> I think it a problem with the format of the time, because if i try a ggplot without scale_x_time i don't have anything on the graphic.
> François-Marie BILLARD
> On Fri, 12 Feb 2021 18:24:35 +0000
> Rui Barradas <ruipbarradas using sapo.pt> wrote:
>> In order to select every 20 s, set the date_breaks = "20 secs", not the
>> The axis labels are also formatted, with date_labels, standard datetime
>> format strings are used for this. And rotated, not part of the question.
>> # Create some data
>> time <- seq(as.POSIXct("2021-02-11"), as.POSIXct("2021-02-11 00:29:59"),
>> by = "1 secs")
>> y <- cumsum(rnorm(length(time)))
>> df1 <- data.frame(time, y)
>> # Plot the data
>> ggplot(df1, aes(time, y)) +
>> geom_line() +
>> scale_x_datetime(date_breaks = "20 secs", date_labels = "%M:%S") +
>> theme(axis.text.x = element_text(angle = 90, vjust = 0.5, hjust=1,
>> size = 5))
>> Hope this helps,
>> Rui Barradas
>> Às 15:05 de 12/02/21, Informatique escreveu:
>>> i'm using Rstudio from a few day, and i have some information in a CVS file, take every five second, format of the time is HH:MM:SS.
>>> I use the hour on the X axis, but i don't want having all the time print. For example only every 10 values.
>>> I think it will be possible with scale_x_datetime(breaks = date_breaks(XXX)
>>> but i don't understand how select every 20 s.
>>> Thank's for your help
>>> François-marie BILLARD
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