Simple if statement inside a for looping
I have never work with if statement and I have to produce a simple one.
value=c(250,200,180)
vector1<-c(1:10)
vector2<-c(11:20)
vector3<-c(21:30)
matrixmy<-cbind(vector1,vector2,vector3)
My if statement will be inside a function, (myfunction). The idea is:
When function(250) I will use the first collumn of matrix matrixmy[,1] for the rest of the function.
When function(220) I will use the second collumn of matrix matrixmy[,2] for the rest of the function.
When function(200) I will use the first collumn of matrix matrixmy[,3] for the rest of the function
The function is already implemented, but I couldnt do a reproducible example.
The idea Ive been thinking for the if else statement is:
if value[i]=250 then j=1
sample=matrixmy[,1]
else
if value[i]=220 then
sample=matrixmy[,2]
else
then value[i]=200 then j=3
sample=matrixmy[,3]
Is it clear?
Any help?
Thanks
r if-statement
asked Nov 12 '18 at 14:07
LauraLaura
35319
add a comment |
I have never work with if statement and I have to produce a simple one.
value=c(250,200,180)
vector1<-c(1:10)
vector2<-c(11:20)
vector3<-c(21:30)
matrixmy<-cbind(vector1,vector2,vector3)
My if statement will be inside a function, (myfunction). The idea is:
When function(250) I will use the first collumn of matrix matrixmy[,1] for the rest of the function.
When function(220) I will use the second collumn of matrix matrixmy[,2] for the rest of the function.
When function(200) I will use the first collumn of matrix matrixmy[,3] for the rest of the function
The function is already implemented, but I couldnt do a reproducible example.
The idea Ive been thinking for the if else statement is:
if value[i]=250 then j=1
sample=matrixmy[,1]
else
if value[i]=220 then
sample=matrixmy[,2]
else
then value[i]=200 then j=3
sample=matrixmy[,3]
Is it clear?
Any help?
Thanks
r if-statement
asked Nov 12 '18 at 14:07
LauraLaura
35319
5
I strongly suggest you study some R tutorials and learn the proper syntax for theifcontrol-flow construct in R.
– Roland
Nov 12 '18 at 14:10
add a comment |
I have never work with if statement and I have to produce a simple one.
value=c(250,200,180)
vector1<-c(1:10)
vector2<-c(11:20)
vector3<-c(21:30)
matrixmy<-cbind(vector1,vector2,vector3)
My if statement will be inside a function, (myfunction). The idea is:
When function(250) I will use the first collumn of matrix matrixmy[,1] for the rest of the function.
When function(220) I will use the second collumn of matrix matrixmy[,2] for the rest of the function.
When function(200) I will use the first collumn of matrix matrixmy[,3] for the rest of the function
The function is already implemented, but I couldnt do a reproducible example.
The idea Ive been thinking for the if else statement is:
if value[i]=250 then j=1
sample=matrixmy[,1]
else
if value[i]=220 then
sample=matrixmy[,2]
else
then value[i]=200 then j=3
sample=matrixmy[,3]
Is it clear?
Any help?
Thanks
r if-statement
asked Nov 12 '18 at 14:07
LauraLaura
35319
I have never work with if statement and I have to produce a simple one.
value=c(250,200,180)
vector1<-c(1:10)
vector2<-c(11:20)
vector3<-c(21:30)
matrixmy<-cbind(vector1,vector2,vector3)
My if statement will be inside a function, (myfunction). The idea is:
When function(250) I will use the first collumn of matrix matrixmy[,1] for the rest of the function.
When function(220) I will use the second collumn of matrix matrixmy[,2] for the rest of the function.
When function(200) I will use the first collumn of matrix matrixmy[,3] for the rest of the function
The function is already implemented, but I couldnt do a reproducible example.
The idea Ive been thinking for the if else statement is:
if value[i]=250 then j=1
sample=matrixmy[,1]
else
if value[i]=220 then
sample=matrixmy[,2]
else
then value[i]=200 then j=3
sample=matrixmy[,3]
Is it clear?
Any help?
Thanks
r if-statement
r if-statement
asked Nov 12 '18 at 14:07
LauraLaura
35319
asked Nov 12 '18 at 14:07
LauraLaura
35319
asked Nov 12 '18 at 14:07
LauraLaura
35319
asked Nov 12 '18 at 14:07
LauraLaura
35319
asked Nov 12 '18 at 14:07
LauraLaura
35319
35319
5
I strongly suggest you study some R tutorials and learn the proper syntax for theifcontrol-flow construct in R.
– Roland
Nov 12 '18 at 14:10
add a comment |
5
I strongly suggest you study some R tutorials and learn the proper syntax for theifcontrol-flow construct in R.
– Roland
Nov 12 '18 at 14:10
5
5
I strongly suggest you study some R tutorials and learn the proper syntax for the
if control-flow construct in R.– Roland
Nov 12 '18 at 14:10
I strongly suggest you study some R tutorials and learn the proper syntax for the
if control-flow construct in R.– Roland
Nov 12 '18 at 14:10
add a comment |
1 Answer
1
active
oldest
votes
You can simplify things alot, just use:
index <- c(`250` = 1, `220` = 2, `200` = 3)[as.character(value[i])]
sample = matrixmy[, index]
If you want to stick to your code, use something like this.
if (value[i]==250) j=1
if (value[i]==220) j=2
if (value[i]==200) j=3
sample=matrixmy[,j]
answered Nov 12 '18 at 14:13
Andre ElricoAndre Elrico
5,63311028
add a comment |
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1 Answer
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active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You can simplify things alot, just use:
index <- c(`250` = 1, `220` = 2, `200` = 3)[as.character(value[i])]
sample = matrixmy[, index]
If you want to stick to your code, use something like this.
if (value[i]==250) j=1
if (value[i]==220) j=2
if (value[i]==200) j=3
sample=matrixmy[,j]
answered Nov 12 '18 at 14:13
Andre ElricoAndre Elrico
5,63311028
add a comment |
You can simplify things alot, just use:
index <- c(`250` = 1, `220` = 2, `200` = 3)[as.character(value[i])]
sample = matrixmy[, index]
If you want to stick to your code, use something like this.
if (value[i]==250) j=1
if (value[i]==220) j=2
if (value[i]==200) j=3
sample=matrixmy[,j]
answered Nov 12 '18 at 14:13
Andre ElricoAndre Elrico
5,63311028
add a comment |
You can simplify things alot, just use:
index <- c(`250` = 1, `220` = 2, `200` = 3)[as.character(value[i])]
sample = matrixmy[, index]
If you want to stick to your code, use something like this.
if (value[i]==250) j=1
if (value[i]==220) j=2
if (value[i]==200) j=3
sample=matrixmy[,j]
answered Nov 12 '18 at 14:13
Andre ElricoAndre Elrico
5,63311028
You can simplify things alot, just use:
index <- c(`250` = 1, `220` = 2, `200` = 3)[as.character(value[i])]
sample = matrixmy[, index]
If you want to stick to your code, use something like this.
if (value[i]==250) j=1
if (value[i]==220) j=2
if (value[i]==200) j=3
sample=matrixmy[,j]
answered Nov 12 '18 at 14:13
Andre ElricoAndre Elrico
5,63311028
edited Nov 12 '18 at 14:30
answered Nov 12 '18 at 14:13
Andre ElricoAndre Elrico
5,63311028
answered Nov 12 '18 at 14:13
Andre ElricoAndre Elrico
5,63311028
answered Nov 12 '18 at 14:13
Andre ElricoAndre Elrico
5,63311028
5,63311028
add a comment |
add a comment |
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5
I strongly suggest you study some R tutorials and learn the proper syntax for the
ifcontrol-flow construct in R.– Roland
Nov 12 '18 at 14:10