Please use reply-all or equivalent to keep the list in the conversation. I don't do private online consultation.
Your example suggested you did not know the difference, but your error suggests a completely different expression triggered the error, so all the more reason to give us an example that we can run to trigger the same error. Items B and C are recommendations to read the help pages for those syntax elements. You should already have read enough of an introduction to R to have encountered the use of the question mark to bring up the help pages. If not, please do. -- Sent from my phone. Please excuse my brevity. On May 16, 2017 9:00:09 AM PDT, "Abdelrahman, Omar (RER)" <omar.abdelrah...@miamidade.gov> wrote: >Thanks Jeff. I will send plain text from now on. I am not sure what B >or C mean; is there a guide that I can reference? I know the difference >between "=" and "==" , they work the same in Stata and SAS. > >Omar >-----Original Message----- >From: Jeff Newmiller [mailto:jdnew...@dcn.davis.ca.us] >Sent: Tuesday, May 16, 2017 11:43 AM >To: r-help@r-project.org; Abdelrahman, Omar (RER) ><omar.abdelrah...@miamidade.gov>; 'r-help@r-project.org' ><r-help@r-project.org> >Subject: Re: [R] violin plot help > >Read >A) the Posting Guide (re plain text only... your emails may be damaged >by the mailing list if you send html-formatted email... only you can >solve this by figuring out how to use your email software) >B) Help on assignment (?`=`) >C) Help on logical tests (?`==`) >-- >Sent from my phone. Please excuse my brevity. > >On May 16, 2017 7:06:40 AM PDT, "Abdelrahman, Omar (RER)" ><omar.abdelrah...@miamidade.gov> wrote: >>I am trying to produce multiple violin plots by 3 categorical >>variables, each violin representing 1 year worth of data. The >variables >>are: >> >>Watershed (7 levels: county canals) >> >>Geography (5 levels: west; central; east; mouth; bay) >> >>Parameter (8 levels: water quality chemical parameters) >> >>Year (25 levels: 1992-2017) >> >>I want to produce 1 plot for each Parameter-Watershed subdivided into >>Geography with a violin for each year. I used facets with the >following >>code (not by year): >> >>ggplot () + >> >>facet_grid (PARAMETER ~Wshed, scales="free_y") + >> >>geom_violin (data=merged, aes(x=Geo, y=RESULT)) >> >> >> >>I do not want facets, they crowd the information so it is unreadable. >I >>just started with R this week and have not been able to figure out the > >>foreach protocol, or any other loop protocol. I tried to subset the >>data to do it iteratively with the following code: >> >> >> >>subdf<-subset (merged, Wshed = "AC") >> >> >> >>but got an error: Error: unexpected input in "subdf=subset (merged, >>Wshed == "" >> >>Any help would be greatly appreciated. >> >>Thanks, >> >>Omar Abdelrahman, Biologist II >>Miami-Dade County, Department of Regulatory and Economic Resources >>Division of Environmental Resources Management (DERM) Overtown Transit > >>Village >>701 NW 1st Court, 5th Floor >>Miami, FL 33136-3912 >>(305) 372-6872 >>abd...@miamidade.gov<mailto:abd...@miamidade.gov> >>www.miamidade.gov/environment<http://www.miamidade.gov/environment/> >> >> >> [[alternative HTML version deleted]] >> >>______________________________________________ >>R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >>https://stat.ethz.ch/mailman/listinfo/r-help >>PLEASE do read the posting guide >>http://www.R-project.org/posting-guide.html >>and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.