⌨️ () Welcome
it is great to hear that R is ranked #1. Could you please provide a web link to this survey?
R is the heaviest used software in Data Science. (Free, Vector Ops, Community, packages)ctrl +Enter runs the line from the script.
In "Describe ()" I got an error I get stuck that says "could not find function "describe"", could you maybe tell me why that could happen? ThanksPs.: sorry if is an easy question, Im just a beginner :)
I found in error in your tutorial. At of the video, on line 84, everything is still a character when you look at the Global Environment (top left). How do I make so that df has numbers in the Global Environment?
Hay, sorry, I’m now at from your course and now the import of data begins, and you say it yourself, most important, and most used, so then why not start with this. Soit, good course like I said before
⌨️ () Installing R
Upto author of this video is trying to sell R to us. Actually tutorial starts after 2:25 thank you. And I am a python & Java architect trying to explore R just for benchmarking purpose.
"If you are on a linux computer, you probably already familiar with what you need to know." 😊
Cannot find the link to download files mentioned @. Thank you for helping.
at , it is instructed to click on video page and download files, I am unable to find that could someone please help
i dont see the download file as seen in
Please Please share the location of the files to be downloaded []
Where can I download these files?[]
where is the "download files" folder ? Can someone send me a link to the site?
_Intro_Files as mentioned at ! You do understand that to like yr class we must not waste any unreasonable time for solving sharads : to understamd where yr files are
_Intro_Files as mentioned at in this tutorial. I cannot find it on the G-Drive link provided for course files. Please clarify. Thanks.
please where are the files to download @
_Course_Files and it looks like it has the same contents as what is discussed at about . When I double click on the Installing file, it doesn't open. I have to open R and then open from file>open script. Once I get the file open, library, head, summary, etc. are not blue in color. They are black like the rest of the text. I try CTRL + ENTER and it does nothing. Can anyone tell me how to fix this?
Window Users - To run a line as a command () use CTRL+R. the vid says CTRL+Enter, but this puts in a line return.
at around into the video, I get an error stating object 'iris' not found when I try to run the plot(iris) line. Anyone know how to fix this?
⌨️ () RStudio
RStudio.R" is the "Rstudio.R" file. Notice that the names of the file referenced in the video is not the exact same as the name of the file in the Google Drive, but they are pretty similar. Like how this file has the term "Studio" and the video at references a filename with the term "Studio""R01_2_3_Packages.R" is the "Packages.R" file. The rest of the files follow a similar vein. You should be able to quickly deduce which file corresponds to which lesson in the video.Hope this helps! - Sincerely, some college student.
⌨️ () Packages
⌨️ () Packages " package ‘pacman’ is not available (for R version 3.4.4)"how to proceed?
"One package to load them all".... my precioussss
Installing Pacman
installing additional packages
@ when he says run the Pac-Man file I’ve been getting an error message saying “ $ operator is invalid for atomic vectors” within the same error message it says “DESCRIPTION file of package ‘read xl’ is missing or broken” can anyone provide some insight?
I must comment on the video. I'm on the mark. I learned more about R-Studio than watching other YouTube videos and reading books. I'm looking forward to learn more. Thank you!
⌨️ () plot()
Bookmark:
Where can i find the file to upload graphics ?Can anyone help me out?
Plot(x,y) is a scatter plot of data, but adapts to the type of data.?plot then look at helpBar charts are for counts with category data is.Histograms are for (shape, gaps, outliers, symmetry) seeing interval data.scatterplot (linear, spread, outlier, correlation)Dataframes and lists
How did it pick up The scale for y plot dnorm ..?
Timestamp for my learning process , Thank you for this awesome presentation!
⌨️ () Bar Charts
For Bar Charts in , I'm getting a different view after clicking on head and I don't see the cars. Can you assist?
⌨️ () Histograms
Edit : Just got the solution by myself lol. The thing is , at he activates the code par(mfrow...) .When I type in that code, I get " figure margins too large" error.
I can't view the histograms in says " Error in plot.new() : figure margins too large"..My R version is 4.0.0 and Rstudio version is 1.2.5042
At , the histogram for "Petal Wdith of Setosa" takes only 1/3 of the space, whereas when I tried running the same code, it took all of the space. I am not able to view the three histograms in one space. Can someone please help me with viewing multiple histograms in one plot space?
Hey, is there anyone who can help me understand Histogram part. I am going part by part with this video. At , it shows only the red chart on the plot screen. After that, he also adds the "versicolor" and "virginica" and after that the plot screen shows 3 graphs at the same time. When I try that, It only comes up with one graph each time. Idk why...
At what does breaks=9 do? (at line 39)
⌨️ () Scatterplots
⌨️ () Overlaying Plots
⌨️ () summary()
⌨️ () describe()
Hello. I am new using R. Everything was doing great until I´ve arrived to the 'describe' function, at .I´ve followed your lead, downloaded previously pacman, but as I download psych, it shows the following: ..."package ‘psych’ successfully unpacked and MD5 sums checkedThe downloaded binary packages are inC:\Users\mateu\AppData\Local\Temp\RtmpwXlTa4\downloaded_packagespsych installedWarning message:In pacman::p_load(pacman, psych) : Failed to install/load:psych"And, although I am able to activate it manually at the packages bar, it says that the function 'describe()' cannot be found. I´m trying to solve it but I just don't have enough knowledge. What do I do? What happened?
⌨️ () Selecting Cases
⌨️ () Data Formats
B ())... Is this because I use RStudio (64-bit)?
⌨️ () Factors
⌨️ () Entering Data
⌨️ () Importing Data
timestamp if you're using windows, use a . instead of a ~ so ./Desktop/mbb.csv instead of ~/Desktop/mbb.csv hope this helps someone else. Not sure what the difference is but this worked for me.
Hi, I'm a bit stuck at . Whenever I run line 25, I get the following error message:
Hello, Could someone help me in this problem " could not find function "import" in .
End of Importing Data
⌨️ () Hierarchical Clustering
Modeling Data (Heirarchical Clustering, set number of k groups, measures of distance, Divisive (all in one group then start spliting apart) vs agglomative -all apart then add together).
does anyone know how to run one line of script only like he does? when I do ctrl + enter on my pc, it will run the entire block. ex
⌨️ () Principal Components
Principle components (PCA) - less noise, fewer unhelpful variables implies more meaning. Shadows.2 variables. linear. regression. But we look at the perpendicular distance to regression lines, not vertical. Collapse distance. Rotate (transform data). 2D to 1D. Hopefully it is important information.Regression - stepwise, forward, lars, lasso
can somebody clarify what's happening at , i.e. the significance of standard deviation in selection of pc's?it seems the SD's must be cumulative rather than individualthanks
⌨️ () Regression
has anyone noticed that on , in the file, he actually write the sentence like: x <- as.matrix(data[, -12]), not the one shown on the screen x <- as.matrix(data[-12])?
"And here I specify where it is in each of them...I have to give a little index number [-42]...I'm really sorry, but what does this mean? I've tried manipulating the index number around, and higher index numbers do lead to higher predictive value in results...what exactly is happening here?
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