On 26/08/2018 3:10 AM, Jeremie Juste wrote:
Duncan Murdoch writes:
for ( i in 1:length(var1)){
This is generally a bad idea: if length(var1) == 0, it does the wrong
thing, since 1:0 is c(1L, 0L). Better to use
for ( i in seq_along(var1) ) {
granted. One should check the validity of th
Of course I meant
>If the length of var1 should not be 0 so
stopifnot(length(var)>0)
On Sun, Aug 26, 2018 at 9:10 AM, Jeremie Juste
wrote:
> Duncan Murdoch writes:
>
> >> for ( i in 1:length(var1)){
> >
> > This is generally a bad idea: if length(var1) == 0, it does the wrong
> > thing, sinc
Duncan Murdoch writes:
>> for ( i in 1:length(var1)){
>
> This is generally a bad idea: if length(var1) == 0, it does the wrong
> thing, since 1:0 is c(1L, 0L). Better to use
>
> for ( i in seq_along(var1) ) {
>
granted. One should check the validity of their variables before using
them but I
On 25/08/2018 1:47 PM, jeremieju...@gmail.com wrote:
Hello,
I'm aware it is not the answer you are expecting but indexes are not that bad
to implement as well.
for ( i in 1:length(var1)){
This is generally a bad idea: if length(var1) == 0, it does the wrong
thing, since 1:0 is c(1L, 0L). B
Hello,
I'm aware it is not the answer you are expecting but indexes are not that bad
to implement as well.
for ( i in 1:length(var1)){
elem1 <-var1[i]
elem2 <- var2[i]
}
if you want more abstraction you could then wrap that up in a function
HTHOn 25 Aug 2018 18:57, Jeff Newmiller wrote:
>
>
look at the map2 function in the purrr package.
On August 24, 2018 6:44:19 AM PDT, Deepa wrote:
>Hello,
>
>Is there an option to include multiple counters in a single for loop in
>R?
>
>For instance, in python there is
>
>for i,j in zip(x,range(0,len(x))):
>
>
>Any suggestions?
>
> [[altern
I don't know of any such option, but it's easy enough to achieve something more
or less equivalent.
x <- runif(5)
for (ir in seq(nrow(myi <- cbind(x, 1:length(x) {
i <- myi[ir,1]
j <- myi[ir,2]
cat(i,j,'\n')
}
I consider that for() statement to be ugly and unreadable. Normally I would
Sort of, but you typically wouldn't need to in R because of vectorization,
which buries the iteration in the underlying C code. Here's an example that
may clarify what I mean:
x <- cbind(1:5,6:10)
x ## a 2 column matrix
## get squares of all elements of x
## method 1
m1 <-x^2
##method 2: square t
Hello,
Is there an option to include multiple counters in a single for loop in R?
For instance, in python there is
for i,j in zip(x,range(0,len(x))):
Any suggestions?
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