R cannot export all rows to csv [closed] - r

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Fundamental stuff but i couldn't seem to get around this. I performed the following process:
d1<-read.csv('hourly.csv',sep=",",header=F)
names(d1)<-c("date","rain","q","qa","qb")
d2<-read.csv('event.csv',sep=",",header=F)
names(d2)<-c("enum","st","et","rain2","qtot")
for(k in 1:206){
st<-d2[k,2]
et<-d2[k,3]
Datetime<-d1[st,]
print(Datetime)
write.csv(Datetime, file="DatesA3.csv")
}
In the end, i exported the results to a csv file. There are 206 rows altogether and they display fine in R. But when exporting, only the last row is exported in the csv file. I tried multiple things such at write.table, append, etc. but nothing seems to work.
How do i export every row into one file?
Please advise and thank you!

Datetime[k, ] <- d1[st, ] # instead, otherwise you overwrite
# and write the result outside the loop

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How to choose the first "n" elements in R [closed]

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This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers.
Closed 5 years ago.
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(USING R)
So I imported a data set by using
xcars <- read.csv(file.choose())
and then I chose my data set which was originally an excel file.
So, I have a column named dist (short for displacement) and I want to choose the first 25 entries underneath that column and then plot it on a histogram, so I attempted the following.
carsUpTo25 <- xcars(1:25,)
hist(carsUpTo25$dist)
Of course this didn't work. However, any help on how I would do this would be helpful.
Try this-
hist(xcars[,dist[1:10]])

How to read CSV files in a loop? [closed]

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This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers.
Closed 6 years ago.
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I am new to R and now I have an issue while I try to read CSV files in a loop. My CSV files are named as
result_file_1.csv , result_file_2.csv,....result_file_10.csv
So I planned to read a CSV by the below code:
for(i in 1:10){
t1=read.csv("result_file_i.csv")
// rest of my code
}
I also tried:
for(i in 1:10){
t1=read.csv("result_file_"+i+".csv")
// rest of my code
}
both did not work. Any help is appreciated
As suggested above I used paste0("result_file",i,".csv") and it worked fine.

Excel messes up some dots (".") in a number [closed]

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Closed 6 years ago.
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I have a tab delimited file:
I created this file in R as a data.frame and wrote it to the above file using write.table(dataFrame,"filepath",row.names=FALSE). However after I opened this in excel I got some ##### in my excel file:
The only difference between the tab del file and the excel file is that in the excel file the . is omitted, but I don't have any idea how this is possible because most of the other numbers are just fine. Any suggestion to fix this problem is welcome.
Update
I can fit the data in the column:
However there should be a . after the 1
Probably your import settings are wrong regarding the seperation for thousands and decimals. Notice that the problem arises when the first number is >1. Excel interprets a number as a thousand if the first number is > 1 , because it woudln't make sense for excel to convert a number which begins with a 0 to a thousand. So you have to fix this:
You have to do this while importing the file in the last step, you have to click on Advanced and then set the Decimal seperator to: . and the Thousands seperator to: , (or visa versa, it's what you prefer offcourse but in your case it has to be this)

"there is no package called 'xlsx'": having trouble reading .xlsx file [closed]

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This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers.
Closed 5 years ago.
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Looking to read in an .xlsx file. This is an assignment so I specifically can't use Excel first to convert it to .csv.
Tried using read.xlsx which couldn't be found so I tried 'library(xlsx)' which was not a package according to R.
Does anyone know if there's something glaringly obvious that I'm not doing? Is the package called something different? Is there a different/better way to read an xlsx file?
Thanks!

working directory with spaces in R [closed]

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Closed 5 years ago.
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I am having the problem that when I use setwd() with a path that includes spaces (e.g. setwd("C:/Users/Name/My Documents/") I get the error message
"cannot change working directory"
I am a bit suprised that I did not find much about this here or on google - so it must either be a rare error or everyone knows about it I reckon. Either way, is there a why to work around it?
I am using Windows 7 and R version 3.0.2.
R cannot setwd into a directory that it doesn't have 'x' (execute) permission for.
This should work, but if really needed, you can use the function shortPathName.
> shortPathName("C:/Program Files (x86)/Adobe/")
[1] "C:\\PROGRA~2\\Adobe\\"
I can replicate your error if I just copy and paste
setwd("C:/Users/Name/My Documents/")
to console as is. The problem is that R cannot find the specified path. I believe that you should replace "Name" with your username...
If I replace "Name" with my username, it works as expected.

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