Thanks.
This is an irregular time series. The line plot does not look good because
of the gap between 9/11/2008 and 10/12/2009. I think two plots would be
better.
How would you include the date on the x-axis. Right now it only gives one
tick mark, 2009.

Yolande

On Tue, Jul 31, 2012 at 2:01 PM, Rui Barradas <ruipbarradas@sapo.pt> wrote:

> Hello,
>
> It only gives that error if you don't
>
>
> last$date <- as.Date(last$date, format="%m/%d/%Y")
>
> You must have dates, not character values.
> Try it, then make a zoo object, then plot it.
>
> Rui Barradas
>
> Em 31-07-2012 18:54, Yolande Tra escreveu:
>
>  Thank you everyone for the attempt to solve the problem
>> It is an irregular series and insert NAs when a date is missing
>>
>>> library(zoo)
>>> z <- zoo(last$r_wvht, order.by=last$date)
>>> plot(z)
>>>
>> Error in plot.window(...) : need finite 'xlim' values
>> In addition: Warning messages:
>> 1: In xy.coords(x, y, xlabel, ylabel, log) : NAs introduced by coercion
>> 2: In min(x) : no non-missing arguments to min; returning Inf
>> 3: In max(x) : no non-missing arguments to max; returning -Inf
>>
>> I have also tried
>>
>> z <- read.zoo("plot1.csv", header = TRUE, sep = ",", format = "%m/%d/%Y")
>>> plot(z)
>>>
>> The plot does not look good. It does not display the individual dates.
>>
>> Y
>> Y
>> On Tue, Jul 31, 2012 at 1:33 PM, Rui Barradas <ruipbarradas@sapo.pt>
>> wrote:
>>
>>  Hello,
>>>
>>> Sorry, I forgot the "time series" part of your question. You could use
>>> instead one of
>>>
>>> # 1.  type = "l" gives a line plot
>>> plot(r_wvht ~ date, data = last, type="l")
>>>
>>> # 2. use time series object plot
>>> library(zoo)
>>> z <- zoo(last$r_wvht, order.by=last$date)
>>> plot(z)
>>>
>>> Rui Barradas
>>>
>>> Em 31-07-2012 18:27, Rui Barradas escreveu:
>>>
>>> Hello,
>>>
>>>>  You could use dput(), it's not your first post...
>>>>
>>>>
>>>> last <- structure(list(date = c("8/6/2008", "8/8/2008", "8/11/2008",
>>>> "8/13/2008", "8/14/2008", "8/18/2008", "8/20/2008", "8/27/2008",
>>>> "8/28/2008", "8/31/2008", "9/2/2008", "9/3/2008", "9/4/2008",
>>>> "9/5/2008", "9/8/2008", "9/11/2008", "10/12/2009", "10/14/2009",
>>>> "10/19/2009", "10/21/2009", "10/26/2009", "10/29/2009", "10/30/2009",
>>>> "11/2/2009", "11/3/2009", "11/4/2009", "11/11/2009", "11/13/2009"
>>>> ), r_wvht = c(0.9766667, 0.7733333, 1.4833333, 1.5766667, 1.39,
>>>> 0.78, 0.8383333, 1.77, 1.295, 2.41, 1.3166667, 1.3075, 1.39,
>>>> 1.6333333, 1.2416667, 1.395, 0.8633333, 2.79, 1.0325, 1.965,
>>>> 1.78, 1.5666667, 1.05, 1.4633333, 1.24, 1.0075, 1.605, 1.8475
>>>> )), .Names = c("date", "r_wvht"), class = "data.frame", row.names =
>>>> c("1",
>>>> "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13",
>>>> "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24",
>>>> "25", "26", "27", "28"))
>>>>
>>>> last$date <- as.Date(last$date, format="%m/%d/%Y")
>>>>
>>>> plot(r_wvht ~ date, data = last)
>>>>
>>>> (You were forgetting that last$date was a character vector, not class
>>>> Date.)
>>>>
>>>> Hope this helps,
>>>>
>>>> Rui Barradas
>>>>
>>>> Em 31-07-2012 18:02, Yolande Tra escreveu:
>>>>
>>>>  Hello,
>>>>>
>>>>> This should be pretty simple but I cannot get it right. Please point to
>>>>> the
>>>>> right code. Thanks.
>>>>>
>>>>> last <- read.csv(file.path(dataDir,"****plot1.csv"), as.is
>>>>>
>>>>> =T,stringsAsFactors
>>>>>>
>>>>>> = FALSE)
>>>>>
>>>>> last
>>>>>>
>>>>>>            date    r_wvht
>>>>> 1    8/6/2008 0.9766667
>>>>> 2    8/8/2008 0.7733333
>>>>> 3   8/11/2008 1.4833333
>>>>> 4   8/13/2008 1.5766667
>>>>> 5   8/14/2008 1.3900000
>>>>> 6   8/18/2008 0.7800000
>>>>> 7   8/20/2008 0.8383333
>>>>> 8   8/27/2008 1.7700000
>>>>> 9   8/28/2008 1.2950000
>>>>> 10  8/31/2008 2.4100000
>>>>> 11   9/2/2008 1.3166667
>>>>> 12   9/3/2008 1.3075000
>>>>> 13   9/4/2008 1.3900000
>>>>> 14   9/5/2008 1.6333333
>>>>> 15   9/8/2008 1.2416667
>>>>> 16  9/11/2008 1.3950000
>>>>> 17 10/12/2009 0.8633333
>>>>> 18 10/14/2009 2.7900000
>>>>> 19 10/19/2009 1.0325000
>>>>> 20 10/21/2009 1.9650000
>>>>> 21 10/26/2009 1.7800000
>>>>> 22 10/29/2009 1.5666667
>>>>> 23 10/30/2009 1.0500000
>>>>> 24  11/2/2009 1.4633333
>>>>> 25  11/3/2009 1.2400000
>>>>> 26  11/4/2009 1.0075000
>>>>> 27 11/11/2009 1.6050000
>>>>> 28 11/13/2009 1.8475000
>>>>>
>>>>> x<-as.vector(last$date)
>>>>>> x
>>>>>>
>>>>>>    [1] "8/6/2008"   "8/8/2008"   "8/11/2008"  "8/13/2008" "8/14/2008"
>>>>> "8/18/2008"  "8/20/2008"  "8/27/2008"
>>>>>    [9] "8/28/2008"  "8/31/2008"  "9/2/2008"   "9/3/2008" "9/4/2008"
>>>>> "9/5/2008"   "9/8/2008"   "9/11/2008"
>>>>> [17] "10/12/2009" "10/14/2009" "10/19/2009" "10/21/2009" "10/26/2009"
>>>>> "10/29/2009" "10/30/2009" "11/2/2009"
>>>>> [25] "11/3/2009"  "11/4/2009"  "11/11/2009" "11/13/2009"
>>>>>
>>>>> y<-as.vector(last$r_wvht)
>>>>>> y
>>>>>>
>>>>>>    [1] 0.9766667 0.7733333 1.4833333 1.5766667 1.3900000 0.7800000
>>>>> 0.8383333
>>>>> 1.7700000 1.2950000 2.4100000
>>>>> [11] 1.3166667 1.3075000 1.3900000 1.6333333 1.2416667 1.3950000
>>>>> 0.8633333
>>>>> 2.7900000 1.0325000 1.9650000
>>>>> [21] 1.7800000 1.5666667 1.0500000 1.4633333 1.2400000 1.0075000
>>>>> 1.6050000
>>>>> 1.8475000
>>>>>
>>>>> plot(x,y)
>>>>>>
>>>>>> Error in plot.window(...) : need finite 'xlim' values
>>>>> In addition: Warning messages:
>>>>> 1: In xy.coords(x, y, xlabel, ylabel, log) : NAs introduced by coercion
>>>>> 2: In min(x) : no non-missing arguments to min; returning Inf
>>>>> 3: In max(x) : no non-missing arguments to max; returning -Inf
>>>>>
>>>>> plot(x,y,xlim=c("6/8/2008","****11/13/2009"))
>>>>>>
>>>>>> Error in plot.window(...) : invalid 'xlim' value
>>>>> Y
>>>>>
>>>>>      [[alternative HTML version deleted]]
>>>>>
>>>>> ______________________________****________________
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>>>>> >
>>>>> PLEASE do read the posting guide http://www.R-project.org/**<http://www.r-project.org/**>
>>>>> posting-guide.html <http://www.r-project.org/**posting-guide.html<http://www.r-project.org/posting-guide.html>>
>>>>>
>>>>>
>>>>> and provide commented, minimal, self-contained, reproducible code.
>>>>>
>>>>> ______________________________****________________
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>>>> >
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>>>> posting-guide.html <http://www.r-project.org/**posting-guide.html<http://www.r-project.org/posting-guide.html>>
>>>>
>>>>
>>>> and provide commented, minimal, self-contained, reproducible code.
>>>>
>>>>
>>>
>

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