[R] Plot by month

[Jim Lemon]

Hi ektaraK,
Here is a step by step way to create an example and get your plot:

# make up a lot of dates
dates<-as.Date("2021-1-1")+sample(0:364,100)
# make up the temperatures
temps<-runif(100,0,40)
# create a data frame
mydf<-data.frame(date=dates,temp=temps)
# create a month variable
mydf$month<-factor(format(mydf$date,"%b"),levels=month.abb)
# calculate mean temperature for months
temp_x_month<-by(mydf$temp,mydf$month,mean)
# create a factor of the months of the year for plotting
months<-factor(month.abb,levels=month.abb)
# plot mean temperature by month
plot(months,temp_x_month,main="Mean temperature by month")

You may only need to apply the last three steps to your data.

Jim

On Sun, Feb 27, 2022 at 1:07 AM Ebert,Timothy Aaron <tebert using ufl.edu> wrote:
>
> I did not get the data .... but I was wondering what you have already tried.
> Try group_by() function
> Try fill= or color= in the aes() statement in ggplot.
>
> What is the goal?
> Do you want lines, bars, or dots?
>
> Is this a class?
>
> Tim
>
> -----Original Message-----
> From: R-help <r-help-bounces using r-project.org> On Behalf Of ektaraful
> Sent: Saturday, February 26, 2022 2:00 AM
> To: r-help using r-project.org
> Subject: [R] Plot by month
>
> [External Email]
>
> Hi,
>
> I want to plot temp data from a csv file by month. Can you help me how I can do it in R?
>
> A sample csv file is attached herewith. Please use left hand data.
>
> Thanks.
> ektaraK
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