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Manipulating Data Frames in R

Manipulating Data Frames in R

Data Science, Recent Posts
Learn To Manipulate Data Frames Using The “mtcars” Dataset Below is an introduction to programming with r, all code in this exercise is only using base r and no other libraries are needed. Task 1: Create a new column to find Displacement per Cylinder  Create a new variable (DisplacementPerCylinder), to calculate the total displacement per cylinder in cubic inches for each vehicle from the mtcars dataset. # "str" allows you to display the internal structure of an R object str(mtcars) ## 'data.frame': 32 obs. of 11 variables: ## $ mpg : num 21 21 22.8 21.4 18.7 18.1 14.3 24.4 22.8 19.2 ... ## $ cyl : num 6 6 4 6 8 6 8 4 4 6 ... ## $ disp: num 160 160 108 258 360 ... ## $ hp : num 110 110 93 110 175 105 245 62 95 123 ... ## $ drat: num 3.9 3.9 3.85 3.08 3
Weather Data

Weather Data

Recent Posts, Tech Tips
Weather alerts, weather Alerts, notifications everywhere. The iPhone notifications from multiple weather apps are handy, and when you hear the notification alerts from other people’s phones going off around you, you’re going to look at your screen. Something is going on, or soon will be. In the old days, we listened to our radios for weather forecasts, often the local television station weather broadcast. Later on, the soothing sounds of the Weather Channel’s greatest hits played while our local forecast rolled across the screen in-between weather people pointing to a green screen and looking off-camera to create a less confusing presentation illusion. It all worked very nicely. Now we can view the weather in our computer browsers or on a phone app.You can easily view the weather in