R reshape2 - transform 6 cols into 2 columns





.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ height:90px;width:728px;box-sizing:border-box;
}







0















I am very new to R programming and stackoverflow, this is for a school's lab, please forgive me if I'm not asking the questions correctly..



I am given a data set with these columns:



ID  |  X_B_Rate  |  X_D_Rate  |  Y_B_Rate  |  Y_D_Rate  | Z_B_Rate  | Z_D_Rate


As you can see, the columns kind of repeat itself, the challenge is to write R code and transform the columns into:



ID  | x_or_y  |  B_or_D  |  Rate


I have tried reshape2's melt() function, but I can't wrap my head around how RegExp works with it



test <- melt(df, id.vars=c('ID'), measure.vars=grep('X$',colnames(df)), 

variable.name='x_or_y', value.name='Rate')


I know the code is definitely wrong... I'm only getting a list of IDs, I can't seem to understand how the RegExp works with the melt() function and I have tried googling "Reshape2 melt()" but everywhere there's only a very short doc on it.



I would totally appreciate if someone could tell me what am I doing wrong or at least point me in a the correct direction to the proper doc :(



Thanks in advance!






r reshape2







share|improve this question


















  • 1





    Could you provide sample data using dput(yourdf) for better results?

    – NelsonGon
    Nov 24 '18 at 17:12


















0















I am very new to R programming and stackoverflow, this is for a school's lab, please forgive me if I'm not asking the questions correctly..



I am given a data set with these columns:



ID  |  X_B_Rate  |  X_D_Rate  |  Y_B_Rate  |  Y_D_Rate  | Z_B_Rate  | Z_D_Rate


As you can see, the columns kind of repeat itself, the challenge is to write R code and transform the columns into:



ID  | x_or_y  |  B_or_D  |  Rate


I have tried reshape2's melt() function, but I can't wrap my head around how RegExp works with it



test <- melt(df, id.vars=c('ID'), measure.vars=grep('X$',colnames(df)), 

variable.name='x_or_y', value.name='Rate')


I know the code is definitely wrong... I'm only getting a list of IDs, I can't seem to understand how the RegExp works with the melt() function and I have tried googling "Reshape2 melt()" but everywhere there's only a very short doc on it.



I would totally appreciate if someone could tell me what am I doing wrong or at least point me in a the correct direction to the proper doc :(



Thanks in advance!






r reshape2







share|improve this question


















  • 1





    Could you provide sample data using dput(yourdf) for better results?

    – NelsonGon
    Nov 24 '18 at 17:12














0












0








0








I am very new to R programming and stackoverflow, this is for a school's lab, please forgive me if I'm not asking the questions correctly..



I am given a data set with these columns:



ID  |  X_B_Rate  |  X_D_Rate  |  Y_B_Rate  |  Y_D_Rate  | Z_B_Rate  | Z_D_Rate


As you can see, the columns kind of repeat itself, the challenge is to write R code and transform the columns into:



ID  | x_or_y  |  B_or_D  |  Rate


I have tried reshape2's melt() function, but I can't wrap my head around how RegExp works with it



test <- melt(df, id.vars=c('ID'), measure.vars=grep('X$',colnames(df)), 

variable.name='x_or_y', value.name='Rate')


I know the code is definitely wrong... I'm only getting a list of IDs, I can't seem to understand how the RegExp works with the melt() function and I have tried googling "Reshape2 melt()" but everywhere there's only a very short doc on it.



I would totally appreciate if someone could tell me what am I doing wrong or at least point me in a the correct direction to the proper doc :(



Thanks in advance!






r reshape2







share|improve this question














I am very new to R programming and stackoverflow, this is for a school's lab, please forgive me if I'm not asking the questions correctly..



I am given a data set with these columns:



ID  |  X_B_Rate  |  X_D_Rate  |  Y_B_Rate  |  Y_D_Rate  | Z_B_Rate  | Z_D_Rate


As you can see, the columns kind of repeat itself, the challenge is to write R code and transform the columns into:



ID  | x_or_y  |  B_or_D  |  Rate


I have tried reshape2's melt() function, but I can't wrap my head around how RegExp works with it



test <- melt(df, id.vars=c('ID'), measure.vars=grep('X$',colnames(df)), 

variable.name='x_or_y', value.name='Rate')


I know the code is definitely wrong... I'm only getting a list of IDs, I can't seem to understand how the RegExp works with the melt() function and I have tried googling "Reshape2 melt()" but everywhere there's only a very short doc on it.



I would totally appreciate if someone could tell me what am I doing wrong or at least point me in a the correct direction to the proper doc :(



Thanks in advance!






r reshape2




r reshape2






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Nov 24 '18 at 16:55









RivRiv

2116




2116








  • 1





    Could you provide sample data using dput(yourdf) for better results?

    – NelsonGon
    Nov 24 '18 at 17:12














  • 1





    Could you provide sample data using dput(yourdf) for better results?

    – NelsonGon
    Nov 24 '18 at 17:12








1




1





Could you provide sample data using dput(yourdf) for better results?

– NelsonGon
Nov 24 '18 at 17:12





Could you provide sample data using dput(yourdf) for better results?

– NelsonGon
Nov 24 '18 at 17:12












1 Answer
1






active

oldest

votes


















1














This should do it:



yourdf %>% 

  gather("id","value",1:ncol(.))


You can then rename your columns in whichever way you wish.
EDIT: Using reshape2 you could do something like this:



yourdf%>% 

  mutate(ID=row_number()) %>% 

  reshape2::melt(id.vars=c("ID"))


I've used my own data to exemplify as your question provides no sample data.






share|improve this answer


























    Your Answer






    StackExchange.ifUsing("editor", function () {
    StackExchange.using("externalEditor", function () {
    StackExchange.using("snippets", function () {
    StackExchange.snippets.init();
    });
    });
    }, "code-snippets");

    StackExchange.ready(function() {
    var channelOptions = {
    tags: "".split(" "),
    id: "1"
    };
    initTagRenderer("".split(" "), "".split(" "), channelOptions);

    StackExchange.using("externalEditor", function() {
    // Have to fire editor after snippets, if snippets enabled
    if (StackExchange.settings.snippets.snippetsEnabled) {
    StackExchange.using("snippets", function() {
    createEditor();
    });
    }
    else {
    createEditor();
    }
    });

    function createEditor() {
    StackExchange.prepareEditor({
    heartbeatType: 'answer',
    autoActivateHeartbeat: false,
    convertImagesToLinks: true,
    noModals: true,
    showLowRepImageUploadWarning: true,
    reputationToPostImages: 10,
    bindNavPrevention: true,
    postfix: "",
    imageUploader: {
    brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
    contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
    allowUrls: true
    },
    onDemand: true,
    discardSelector: ".discard-answer"
    ,immediatelyShowMarkdownHelp:true
    });


    }
    });














    draft saved

    draft discarded


















    StackExchange.ready(
    function () {
    StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53460401%2fr-reshape2-transform-6-cols-into-2-columns%23new-answer', 'question_page');
    }
    );

    Post as a guest















    Required, but never shown

























    1 Answer
    1






    active

    oldest

    votes








    1 Answer
    1






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    1














    This should do it:



    yourdf %>% 
    
  gather("id","value",1:ncol(.))


    You can then rename your columns in whichever way you wish.
    EDIT: Using reshape2 you could do something like this:



    yourdf%>% 
    
  mutate(ID=row_number()) %>% 
    
  reshape2::melt(id.vars=c("ID"))


    I've used my own data to exemplify as your question provides no sample data.






    share|improve this answer






























      1














      This should do it:



      yourdf %>% 
      
  gather("id","value",1:ncol(.))


      You can then rename your columns in whichever way you wish.
      EDIT: Using reshape2 you could do something like this:



      yourdf%>% 
      
  mutate(ID=row_number()) %>% 
      
  reshape2::melt(id.vars=c("ID"))


      I've used my own data to exemplify as your question provides no sample data.






      share|improve this answer




























        1












        1








        1







        This should do it:



        yourdf %>% 
        
  gather("id","value",1:ncol(.))


        You can then rename your columns in whichever way you wish.
        EDIT: Using reshape2 you could do something like this:



        yourdf%>% 
        
  mutate(ID=row_number()) %>% 
        
  reshape2::melt(id.vars=c("ID"))


        I've used my own data to exemplify as your question provides no sample data.






        share|improve this answer















        This should do it:



        yourdf %>% 
        
  gather("id","value",1:ncol(.))


        You can then rename your columns in whichever way you wish.
        EDIT: Using reshape2 you could do something like this:



        yourdf%>% 
        
  mutate(ID=row_number()) %>% 
        
  reshape2::melt(id.vars=c("ID"))


        I've used my own data to exemplify as your question provides no sample data.







        share|improve this answer














        share|improve this answer



        share|improve this answer








        edited Nov 24 '18 at 17:17

























        answered Nov 24 '18 at 17:11









        NelsonGonNelsonGon

        4,2264834




        4,2264834
































            draft saved

            draft discarded




















































            Thanks for contributing an answer to Stack Overflow!


            • Please be sure to answer the question. Provide details and share your research!

            But avoid …



            • Asking for help, clarification, or responding to other answers.

            • Making statements based on opinion; back them up with references or personal experience.


            To learn more, see our tips on writing great answers.




            draft saved


            draft discarded














            StackExchange.ready(
            function () {
            StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53460401%2fr-reshape2-transform-6-cols-into-2-columns%23new-answer', 'question_page');
            }
            );

            Post as a guest















            Required, but never shown





















































            Required, but never shown














            Required, but never shown












            Required, but never shown







            Required, but never shown

































            Required, but never shown














            Required, but never shown












            Required, but never shown







            Required, but never shown







            -

            這個網誌中的熱門文章

            Xamarin.form Move up view when keyboard appear

            圖片
            .everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ height:90px;width:728px;box-sizing:border-box; } 0 I'm trying to build a Chat app UI, the idea of the Layout was pretty simple: When the input bar is focused, keyboard show up and "push" up the chat bar, as it's a grid, the ListView will resize to fit the screen: I update the input bar's margin to "push" it up: NSValue result = (NSValue)args.Notification.UserInfo.ObjectForKey(new NSString(UIKeyboard.FrameEndUserInfoKey)); CGSize keyboardSize = result.RectangleFValue.Size; if (Element != null){ Element.Margin = new Thickness(0, 0, 0,keyboardSize.Height); //push the entry up to keyboard height when keyboard is activated } And this is ...
            閱讀完整內容

            Post-Redirect-Get with Spring WebFlux and Thymeleaf

            圖片
            .everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ height:90px;width:728px;box-sizing:border-box; } 2 Can someone explain to me how to implement the post-redirect-get pattern in Spring WebFlux and Thymeleaf? What subscribes on the database save method? @GetMapping("/register") public String showRegisterForm(Model model) { model.addAttribute("user", new User()); return "register"; } @PostMapping public String processRegisterForm(@Valid User user, BindingResult bindingResult) { if (bindingResult.hasErrors()) { return "register"; } else { userRepository.save(user); //what subscribes on this? //how to redirect on e.g. "/login"? ...
            閱讀完整內容

            Anylogic : not able to use stopDelay()

            圖片
            -2 I am building a railway station model. I want a train to depart when I click a button. I want to call stopDelay() for that but I am not sure how to do that and from which place. anylogic share | improve this question asked Nov 23 '18 at 10:12 Anupam Singh Anupam Singh 1 Hi Anupam, welcome to SOF. Please check how to ask good questions, see link below. Your question is...
            閱讀完整內容