Hey, I think you don't need to understand differential equations to grasp the basics of time series or stochastic modeling. However, knowledge of differential equations can be beneficial for more advanced topics and certain models within these fields.
I am getting error in implementation of codes. mtcars %＞% # Group by one column + group_by(cyl) %＞% + summarize(mean_mpg = mean(mpg)) Error in mtcars %＞% group_by(cyl) %＞% summarize(mean_mpg = mean(mpg)) : could not find function "%＞%"
@@StatisticsGlobe I have merged some csv files using dplyr and reduce (full.join), now I have a species column whose characters are listed in columns, in some cases the species are repeated while I want them to be repeated only once, I can Merge the columns with paste (sep=`,`) command But I can't for the rows. My data looks like starwars dataset and I can also email you an example if I couldn't explain it properly
library(dplyr) dat % dplyr::summarise(Col2 = paste(Col2, collapse = ",")) print(head(dat.merged)) ## I have found this but how can I run it for all my columns in once
Hey, thanks for the further details. Are you looking for this? library(dplyr) library(tidyr) dat % summarise(across(everything(), ~paste(unique(.), collapse = ","), .names = "merged_{col}")) dat_merged
Hy sir Sir I import a excel dataset in Rstudio version 4.3.2 but when I was want to see colnames, it gives me "null"... Kindly give me some suggestion who can I solve this problem 🙏
The code when you tried to import your data. Regarding your other question, please have a look here: statisticsglobe.com/r-split-data-into-train-and-test-sets
Hey, you can find a free introduction here: th-cam.com/video/7mr4Pf2CvSU/w-d-xo.html For a more comprehensive introduction course, please have a look here: statisticsglobe.com/online-course-r-introduction
It has been a while...thank you for the video. I was having some difficulty with group().
Thanks a lot for your kind feedback! 🙂
hello sir, do I need to understand differential equations to understand time series or stochastic modeling?
Hey, I think you don't need to understand differential equations to grasp the basics of time series or stochastic modeling. However, knowledge of differential equations can be beneficial for more advanced topics and certain models within these fields.
@@StatisticsGlobe thank you i will learn them later
You are very welcome!
I am getting error in implementation of codes.
mtcars %＞% # Group by one column
+ group_by(cyl) %＞%
+ summarize(mean_mpg = mean(mpg))
Error in mtcars %＞% group_by(cyl) %＞% summarize(mean_mpg = mean(mpg)) :
could not find function "%＞%"
Hey, you have to install and load dplyr first. Run this before executing your code:
install.packages("dplyr")
library(dplyr)
@@StatisticsGlobe I have already installed and loaded with library command. Still getting error message, I don't know why?
Ahh, I think you are using the wrong symbol, it should be %>% instead of %＞%
Thanks, I need to merge rows with string variables, and Sumrize doesn't work for me. Could you help me?
Hey, could you explain what you mean with "merge rows"?
@@StatisticsGlobe I have merged some csv files using dplyr and reduce (full.join), now I have a species column whose characters are listed in columns, in some cases the species are repeated while I want them to be repeated only once, I can Merge the columns with paste (sep=`,`) command
But I can't for the rows.
My data looks like starwars dataset and I can also email you an example if I couldn't explain it properly
library(dplyr)
dat %
dplyr::summarise(Col2 = paste(Col2, collapse = ","))
print(head(dat.merged))
## I have found this but how can I run it for all my columns in once
Hey, thanks for the further details. Are you looking for this?
library(dplyr)
library(tidyr)
dat %
summarise(across(everything(),
~paste(unique(.),
collapse = ","),
.names = "merged_{col}"))
dat_merged
Hy sir
Sir I import a excel dataset in Rstudio version 4.3.2 but when I was want to see colnames, it gives me "null"...
Kindly give me some suggestion who can I solve this problem 🙏
Hey, could you please share your code? Regards, Joachim
@@StatisticsGlobe
code of what sir?
sir can you explain me coding for data splitting in training and testing data?
The code when you tried to import your data. Regarding your other question, please have a look here: statisticsglobe.com/r-split-data-into-train-and-test-sets
Hii sir, i wanna learn r programming language from scratch. How can I learn?
Hey, you can find a free introduction here: th-cam.com/video/7mr4Pf2CvSU/w-d-xo.html For a more comprehensive introduction course, please have a look here: statisticsglobe.com/online-course-r-introduction