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Shiny code 002, 003, and 004 Errors with running regression and incorrect argument format #36
Description
Dear @dataprofessor,
I have been enjoying learning Shiny and R programming, and have appreciated your YouTube videos, and I am struggling with episodes 2-4 (and the associated Code on your github) and I'm not sure where to go to remedy the issue.
In each of the code files provided, I attempt to Run the code and get the following errors:
Error in y - ymean : non-numeric argument to binary operator
In addition: Warning messages:
1: In randomForest.default(m, y, ...) :
The response has five or fewer unique values. Are you sure you want to do regression?
2: In mean.default(y) : argument is not numeric or logical: returning NA
Do you know where I might be able to go, or what resources there are, for me to remedy these errors so that I can continue to learn and apply the knowledge you've shared on these tutorials? So far, I haven't been able to get very far due to these persistent errors spanning each of the R files.
Your help would be greatly appreciated!
Best regards,
Kolbi
Activity
nvavrock commentedon Jan 26, 2026
#Read data, at first I got an error message stating,
#Error in y - ymean : non-numeric argument to binary operator
#Until I put in line 20 and lines 23-25. Fixed bug.
weather <- read.csv(
text = getURL("https://raw.githubusercontent.com/dataprofessor/data/master/weather-weka.csv"),
stringsAsFactors = FALSE
)
weather$play <- as.factor(weather$play)
weather$outlook <- as.factor(weather$outlook)
weather$windy <- as.factor(weather$windy)
That bug is fixed, but now Status/Output only says "Calculation Complete", but doesn't show the percent of yes or no
nvavrock commentedon Jan 26, 2026
I fixed the app, 003-play-golf:
fixed-app-file.md