Data Experts

➖➖➖➖➖➖➖➖➖➖➖ Create Empty Data frame

> data.frame()
> setNames()
> character()
> numeric()
> factor()
> matrix()

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➖➖➖➖➖➖➖➖➖➖➖ How to Combine Data Frames by Row

> install.packages("plyr")
> rbind()
> rbind.fill()
> head() ; tail()

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➖➖➖➖➖➖➖➖➖➖➖ Rename a Column Name in R

> colnames()

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➖➖➖➖➖➖➖➖➖➖➖ Complete Cases Function

> data.frame()
> complete.cases()

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➖➖➖➖➖➖➖➖➖➖➖ Named Numeric Vector Function

> unname()
> as.numeric()

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➖➖➖➖➖➖➖➖➖➖➖ Dimension Function

> dim()
> dimname()

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➖➖➖➖➖➖➖➖➖➖➖ Replace NA with 0

> is.na()
> which()

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This tutorial shows how to apply the max and min functions in R The example R code of this video can be found below: # Example 1 x1 ＜- c(4, 1, - 50, 20, 8) # Create example vector max(x1) # Apply max to vector min(x1) # Apply min to vector # Example 2 x2 ＜- c(x1, NA) # Create example vector with NA max(x2) # max returns NA max(x2, na.rm = TRUE) # Specify na.rm = TRUE min(x2, na.rm = TRUE) # Specify na.rm = TRUE www.dataexperts.ir https://www.instagram.com/data_experts/ https://t.me/Data_Experts

This tutorial explains how to apply the length function in the R programming language. R Code of this video: x ＜- c(8, 17, 23, 93, - 20, 15, 13, 55, 29, - 84) # Example vector in R length(x) # Apply length function www.dataexperts.ir https://www.instagram.com/data_experts/ https://t.me/Data_Experts

This tutorial explains how to apply the length function in the R programming language. R Code of this video: x ＜- c(8, 17, 23, 93, - 20, 15, 13, 55, 29, - 84) # Example vector in R length(x) # Apply length function

rbind rbind.fill in R www.dataexperts.ir https://www.instagram.com/data_experts/ https://t.me/Data_Experts

colnames function in R www.dataexperts.ir https://www.instagram.com/data_experts/ https://t.me/Data_Experts

complete.cases() www.dataexperts.ir https://www.instagram.com/data_experts/ https://t.me/Data_Experts

replace NA with 0 www.dataexperts.ir https://www.instagram.com/data_experts/ https://t.me/Data_Experts

> unname() > as.numeric() Remove fill name of an vector in R www.dataexperts.ir @data_experts

> data.frame() > setNames() Create empty data frame | R www.dataexperts.ir @data_experts

> dim() # Data Experts www.dataexperts.ir @data_experts

Dr Sasan Barak is an Assistant Professor in Business Analytics within Southampton Business School at the University of Southampton. He has awarded a PhD in management science/ forecasting from Lancaster University , UK as well as a double degree PhD in Finance from VSB, Czech Republic and UniBg, Italy. Sasan's main area of research revolves around forecasting model selection and implementation of statistical and machine learning algorithms in business and finance. Recently he has been working on Meta-learning and Deep Learning for forecasting model selection.. . 🔼 Forecasting in business and finance :From Statistical Learning to Machine Learning. . . 📣 Time: Jun 19, 2020 06:30 PM London Join Zoom Meeting. . https://us02web.zoom.us/j/86730077434 Meeting ID: 867 3007 7434 .. https://t.me/R_Experts

➖➖➖➖➖➖➖➖➖➖➖➖➖ 👁‍🗨 ۵ دلیل برای یادگیری علم داده(داده کاوی) ➖➖➖➖➖➖➖➖➖➖➖➖➖ 🔰 @Data_Experts 🌐 dataexperts.ir