Subsetting Part 1

[avahoffman]

1

Data-Wrangling/lecture_notes/Data_Subsetting_Part1.Rmd

Line 79 in f8e8a81

That was a lot of typing and nested functions, which can be confusing. Recently, the pipe `%>%` makes things such as this much more readable. It reads left side "pipes" into right side. RStudio `CMD/Ctrl + Shift + M` shortcut.

Not sure it's "recently" anymore (I feel old lol)

2

Data-Wrangling/lecture_notes/Data_Subsetting_Part1.Rmd

Line 188 in f8e8a81

## Subset rows of a `data.frame`:

Data-Wrangling/lecture_notes/Data_Subsetting_Part1.Rmd

Line 259 in f8e8a81

## Subset rows of a `data.frame`:

I think information about filtering based on multiple criteria could probably be condensed into one slide (basically telling them to combine with & or | -- comma is harder to interpret so I try not to show it that way). We were pressed for time with the lab so this could maybe help with time.

3

Data-Wrangling/lecture_notes/Data_Subsetting_Part1.Rmd

Line 333 in f8e8a81

## Summary

Summary is cut off at bottom of slide

4

Data-Wrangling/lecture_notes/Data_Subsetting_Part1.Rmd

Line 259 in f8e8a81

## Subset rows of a `data.frame`:

Many slides start with this header. Perhaps make them more specific?

[avahoffman]

LAB

Data-Wrangling/labs/data-subsetting-lab-part1.Rmd

Line 83 in f8e8a81

9. Filter cars with displacements (`displ`) greater than 4 and that are all 4 wheel drive (`drv`) (a value of 4 for `drv`). How many cars/rows are there.

Missing a code chunk for folks to put their answer

[carriewright11]

I was also thinking we could skip one or two of the questions in the lab (because we will do more of this in subsetting 2 and also because there are more questions here than other labs)- but we could make it an extra practice on your own question.

[carriewright11]

3

Data-Wrangling/lecture_notes/Data_Subsetting_Part1.Rmd

Line 333 in f8e8a81

## Summary

Summary is cut off at bottom of slide

That was just the how expanded my screen was for my browser on my laptop - it isn't actually cut off - so that is already ok :)

[carriewright11]

we were 5 min over - for understanding how much to cut (also ran through last 2 questions quickly)