r - create function to ggplot with data.table -



r - create function to ggplot with data.table -

i trying minimise code using functions regularly repeated pieces of code. have need create important number of charts wanting simplify readability.

pretty of info in data.table structures wanting pass function create plot.

reproducible example

library(ggplot2) library(gtable) library(grid) grid.newpage() dt.diamonds <- as.data.table(diamonds) d1 <- dt.diamonds[,list(revenue = sum(price), stones = length(price)), by=clarity] setkey(d1, clarity) mybarchart <- function(data, xdata, ydata, xlabel="", ylabel="", myfill="", myscale="comma") { ggplot(data, aes(x=xdata,y=ydata, fill=myfill)) + geom_bar(stat="identity") + labs(x=xlabel, y=ylabel) + scale_y_continuous(labels=myscale, expand=c(0,0)) + scale_fill_identity(name="") + theme_bw() } mybarchart(d1, "clarity", "revenue") #or mybarchart(d1, "clarity", "revenue", "clarity", "revenue", "red", "dollar")

the error error in eval(expr, envir, enclos) : object 'xdata' not found , suspect because using data.table rather data.frame.

my approach kind of function has been take examples this , checking other posts on this. yet haven't found else demonstrating how data.table rather data.frame

any ideas how create work data.table?

r function ggplot2 data.table

Comments

Post a Comment

Popular posts from this blog

Delphi change the assembly code of a running process -

Delphi change the assembly code of a running process - i'm trying alter address 00741fa5 has push test.009e721c . alter push test.009e71c8 . procedure callback; asm force $9e71c8 end; procedure tform2.btn1click(sender: tobject); var ppid :dword; pprocess : cardinal; begin getwindowthreadprocessid(findwindow(nil,pchar('test')), @ppid); pprocess := openprocess(process_all_access, false, ppid); injectasm(pprocess, $741fa5, 10, integer(@callback), 0); end; here injectasm function (with error checking) function injectasm(process: longword; injectaddress, injectsize, codeaddress, codesize : integer): pointer; var csize, rsize : integer; replaced : array of byte; jmp : array [0..4] of byte; jmpaddress : integer; nopv : byte; : integer; nbr: ulong_ptr; begin //injectsize must equal or greater 5, because need space our //(far) jmp wwxxyyzz instruction //if there's no space, inject in place of few instructions if injectsize ...
Read more

json - Hibernate and Jackson (java.lang.IllegalStateException: Cannot call sendError() after the response has been committed) -

json - Hibernate and Jackson (java.lang.IllegalStateException: Cannot call sendError() after the response has been committed) - hello have problem hibernate , jackson. have 2 pojos @entity @table(name = "users") public class user implements serializable { static final long serialversionuid = 4235637833262722256l; @id @generatedvalue private int id; @column(name = "creation_date") private date creationdate; @column(name = "first_name") private string firstname; @column(name = "last_name") private string lastname; @version @column(name = "version") private int version; @column(name = "e_mail") private string email; @column(name = "enabled") private boolean enabled; @column(name = "login") private string login; @column(name = "password") private string password; @jsonmanagedreference("role") @onetomany(mappedby = "user", cascade = cascadetype.all,fetch = fetchtyp...
Read more

C++ 11 "class" keyword -

C++ 11 "class" keyword - i've started using c++ 11 little bit more , have few questions on special uses of class keyword. know it's used declare class, there's 2 instances have seen don't understand: method<class t>(); and class class_name *var; why precede typename keyword class in first example, , keyword pointer in sec example? that known elaborated type specifier , necessary when class name "shadowed" or "hidden" , need explicit. class t { }; // love of god don't t t; t t2; if compiler smart, give these warnings: main.cpp:15:5: error: must utilize 'class' tag refer type 't' in scope t t2; ^ class main.cpp:14:7: note: class 't' hidden non-type declaration of 't' here t t; ^ if class not defined, deed forwards declaration. for example: template <typename t> void method() { using type = typename t::value_type; } method...
Read more