This question already has answers here:
How to reshape data from long to wide format
(14 answers)
Closed 2 years ago.
I have a dataset in below format
I am trying to get an output in below format using R. The product names for each sales order must be split in columns. There are multiple SalesOrderNumbers and for each of the the numbers of products could be n.
This is a "convert data frame from long to wide format" question. There are many resources on that. The post "How to reshape data from long to wide format" will give you directions on how to do it. Here is another source https://www.datacamp.com/community/tutorials/long-wide-data-R.
Please try that, first. If you have any trouble with it, we will be glad to help you.
Related
This question already has answers here:
How to reshape data from long to wide format
(14 answers)
Pivot_wider function (tidyr r package) from multiple variables
(2 answers)
Closed 8 months ago.
Hey guys I am trying to build a pivot table in R which I just started using. I know this topic has been discussed a few times here but I can't find an example that would help me out. I have data table which looks like following
What I am trying to do is build a triangle with Years as columns. Country & City as rows. So it looks like this
I have tried using group_by but can't figure it out. Would really appreciate any advice I can get!
Thanks in advance
This question already has answers here:
How do I convert a factor into date format?
(3 answers)
Closed 2 years ago.
I am searching for a function in R, that quickly transforms text like "07/04/1995" into the date format in R.
Every help is appreciated!
Best regards
Jakob
One option is lubridate, which has a set of functions that convert text to date based on the order of the month, day and year.
library(lubridate)
mdy("07/04/1995")
See the cheat sheet for more.
This question already has answers here:
How do I get the classes of all columns in a data frame? [duplicate]
(5 answers)
Closed 5 years ago.
Perhaps there is a much simplier way to do this but I do not know. I am trying to create a list of the variable types in R. I have a dataframe with about 20 variables and I want to be create a list where each element is the class of the variable in its corresponding position.
Lets say the dataframe is called USData.
Call class on your data frame using lapply:
lapply(data_frame, class)
This question already has answers here:
Sort (order) data frame rows by multiple columns
(19 answers)
Closed 9 years ago.
Playing around with airquality, and I want to sort the data by Ozone and Wind (within wind)
I have the following command:
sort.airquality<-airquality[order(Ozone, Wind),]
sort.airquality[1:153,]
For some reason I just don't think this is right, I've tried looking up some of the tutorials but they don't seem to cover exactly what I'm looking for. Any help would be most appreciated.
Thanks.
For improved readability, I suggest
sort.airquality <- airquality[with(airquality, order(Ozone, Wind)),]
You want
sort.airquality <- airquality[order(airquality$Ozone, airquality$Wind),]
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
Number format, writing 1e-5 instead of 0.00001
How to not display number as exponent?
I am using RStudio and have a problem that I could not find any solution for:
When working with very large numbers, R displays those number in a shorter format.
But when calculating (for example) (2000x1000x2000), I really want to see 4000000000 and not 4e+09.
How can I change that behaviour?