R: Object doesn't find custom function
I'm newbie in R and I want to create an object with his methods. I have defined my object and function with these code:
setClass("gComparativa", slots=list(data="ANY"))
show_graphic <- function(object) 0
setGeneric("show_graphic")
setMethod("show_graphic", "gComparativa", function(object){
})
I create and call the method with these code:
g <- new("gComparativa", data=data)
g.show_graphic()
But when I call the method I've this error:
Error in g.show_graphic() : This function cannot be found
"g.show_graphic"
What am I doing wrong? What can I define methods and call later?
r oop
asked Nov 13 '18 at 23:15
José CarlosJosé Carlos
69321946
add a comment |
I'm newbie in R and I want to create an object with his methods. I have defined my object and function with these code:
setClass("gComparativa", slots=list(data="ANY"))
show_graphic <- function(object) 0
setGeneric("show_graphic")
setMethod("show_graphic", "gComparativa", function(object){
})
I create and call the method with these code:
g <- new("gComparativa", data=data)
g.show_graphic()
But when I call the method I've this error:
Error in g.show_graphic() : This function cannot be found
"g.show_graphic"
What am I doing wrong? What can I define methods and call later?
r oop
asked Nov 13 '18 at 23:15
José CarlosJosé Carlos
69321946
1
Might be other issues and I'm not the most familiar with S4 but you don't call methods in R with dot notation like that, you just doshow_graphic(g). See more here adv-r.hadley.nz/s4.html#s4-generics
– Calum You
Nov 13 '18 at 23:25
1
@CalumYou Just saw your comment right after I posted my answer. I think technically your comment came first, so if you post as an answer I will delete.
– duckmayr
Nov 13 '18 at 23:27
add a comment |
I'm newbie in R and I want to create an object with his methods. I have defined my object and function with these code:
setClass("gComparativa", slots=list(data="ANY"))
show_graphic <- function(object) 0
setGeneric("show_graphic")
setMethod("show_graphic", "gComparativa", function(object){
})
I create and call the method with these code:
g <- new("gComparativa", data=data)
g.show_graphic()
But when I call the method I've this error:
Error in g.show_graphic() : This function cannot be found
"g.show_graphic"
What am I doing wrong? What can I define methods and call later?
r oop
asked Nov 13 '18 at 23:15
José CarlosJosé Carlos
69321946
I'm newbie in R and I want to create an object with his methods. I have defined my object and function with these code:
setClass("gComparativa", slots=list(data="ANY"))
show_graphic <- function(object) 0
setGeneric("show_graphic")
setMethod("show_graphic", "gComparativa", function(object){
})
I create and call the method with these code:
g <- new("gComparativa", data=data)
g.show_graphic()
But when I call the method I've this error:
Error in g.show_graphic() : This function cannot be found
"g.show_graphic"
What am I doing wrong? What can I define methods and call later?
r oop
r oop
asked Nov 13 '18 at 23:15
José CarlosJosé Carlos
69321946
asked Nov 13 '18 at 23:15
José CarlosJosé Carlos
69321946
asked Nov 13 '18 at 23:15
José CarlosJosé Carlos
69321946
asked Nov 13 '18 at 23:15
José CarlosJosé Carlos
69321946
asked Nov 13 '18 at 23:15
José CarlosJosé Carlos
69321946
69321946
1
Might be other issues and I'm not the most familiar with S4 but you don't call methods in R with dot notation like that, you just doshow_graphic(g). See more here adv-r.hadley.nz/s4.html#s4-generics
– Calum You
Nov 13 '18 at 23:25
1
@CalumYou Just saw your comment right after I posted my answer. I think technically your comment came first, so if you post as an answer I will delete.
– duckmayr
Nov 13 '18 at 23:27
add a comment |
1
Might be other issues and I'm not the most familiar with S4 but you don't call methods in R with dot notation like that, you just doshow_graphic(g). See more here adv-r.hadley.nz/s4.html#s4-generics
– Calum You
Nov 13 '18 at 23:25
1
@CalumYou Just saw your comment right after I posted my answer. I think technically your comment came first, so if you post as an answer I will delete.
– duckmayr
Nov 13 '18 at 23:27
1
1
Might be other issues and I'm not the most familiar with S4 but you don't call methods in R with dot notation like that, you just do
show_graphic(g). See more here adv-r.hadley.nz/s4.html#s4-generics– Calum You
Nov 13 '18 at 23:25
Might be other issues and I'm not the most familiar with S4 but you don't call methods in R with dot notation like that, you just do
show_graphic(g). See more here adv-r.hadley.nz/s4.html#s4-generics– Calum You
Nov 13 '18 at 23:25
1
1
@CalumYou Just saw your comment right after I posted my answer. I think technically your comment came first, so if you post as an answer I will delete.
– duckmayr
Nov 13 '18 at 23:27
@CalumYou Just saw your comment right after I posted my answer. I think technically your comment came first, so if you post as an answer I will delete.
– duckmayr
Nov 13 '18 at 23:27
add a comment |
1 Answer
1
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votes
You'll need
show_graphic(g)
instead. R's OOP systems don't generally work like many other programming languages. (Here's a good primer).
You can't access class functions via <objectname>.<functionname>(), but rather you just call the function on the object like <functionname>(<objectname>).
Consider that dots can be part of an object name in R; for example try
example.object <- 2
example.object
# [1] 2
answered Nov 13 '18 at 23:26
duckmayrduckmayr
7,29811226
add a comment |
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1 Answer
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active
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votes
1 Answer
1
active
oldest
votes
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oldest
votes
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oldest
votes
You'll need
show_graphic(g)
instead. R's OOP systems don't generally work like many other programming languages. (Here's a good primer).
You can't access class functions via <objectname>.<functionname>(), but rather you just call the function on the object like <functionname>(<objectname>).
Consider that dots can be part of an object name in R; for example try
example.object <- 2
example.object
# [1] 2
answered Nov 13 '18 at 23:26
duckmayrduckmayr
7,29811226
add a comment |
You'll need
show_graphic(g)
instead. R's OOP systems don't generally work like many other programming languages. (Here's a good primer).
You can't access class functions via <objectname>.<functionname>(), but rather you just call the function on the object like <functionname>(<objectname>).
Consider that dots can be part of an object name in R; for example try
example.object <- 2
example.object
# [1] 2
answered Nov 13 '18 at 23:26
duckmayrduckmayr
7,29811226
add a comment |
You'll need
show_graphic(g)
instead. R's OOP systems don't generally work like many other programming languages. (Here's a good primer).
You can't access class functions via <objectname>.<functionname>(), but rather you just call the function on the object like <functionname>(<objectname>).
Consider that dots can be part of an object name in R; for example try
example.object <- 2
example.object
# [1] 2
answered Nov 13 '18 at 23:26
duckmayrduckmayr
7,29811226
You'll need
show_graphic(g)
instead. R's OOP systems don't generally work like many other programming languages. (Here's a good primer).
You can't access class functions via <objectname>.<functionname>(), but rather you just call the function on the object like <functionname>(<objectname>).
Consider that dots can be part of an object name in R; for example try
example.object <- 2
example.object
# [1] 2
answered Nov 13 '18 at 23:26
duckmayrduckmayr
7,29811226
answered Nov 13 '18 at 23:26
duckmayrduckmayr
7,29811226
answered Nov 13 '18 at 23:26
duckmayrduckmayr
7,29811226
answered Nov 13 '18 at 23:26
duckmayrduckmayr
7,29811226
7,29811226
add a comment |
add a comment |
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1
Might be other issues and I'm not the most familiar with S4 but you don't call methods in R with dot notation like that, you just do
show_graphic(g). See more here adv-r.hadley.nz/s4.html#s4-generics– Calum You
Nov 13 '18 at 23:25
1
@CalumYou Just saw your comment right after I posted my answer. I think technically your comment came first, so if you post as an answer I will delete.
– duckmayr
Nov 13 '18 at 23:27