hw03

library(dplyr)

## 
## Attaching package: 'dplyr'

## The following objects are masked from 'package:stats':
## 
##     filter, lag

## The following objects are masked from 'package:base':
## 
##     intersect, setdiff, setequal, union

library(tidyr) 
library(stringr) 
library(scales)
library(readxl)

bike_orderline_tbl <- read_excel("./bike_orderlines.xlsx") 

bike_orderline_tbl %>% 
  group_by(category_1, category_2, frame_material) %>%
  summarise(Sales = sum(total_price, na.rm = TRUE)) %>% 
  mutate(Sales = dollar(Sales)) %>%
  rename( 'Prime category' = category_1, 'Secondary category' = category_2,    'Frame Material' = frame_material)

## `summarise()` has grouped output by 'category_1', 'category_2'. You can
## override using the `.groups` argument.

## # A tibble: 13 × 4
## # Groups:   Prime category, Secondary category [9]
##    `Prime category` `Secondary category` `Frame Material` Sales      
##    <chr>            <chr>                <chr>            <chr>      
##  1 Mountain         Cross Country Race   Aluminum         $3,318,560 
##  2 Mountain         Cross Country Race   Carbon           $15,906,070
##  3 Mountain         Fat Bike             Aluminum         $1,052,620 
##  4 Mountain         Over Mountain        Carbon           $7,571,270 
##  5 Mountain         Sport                Aluminum         $1,932,755 
##  6 Mountain         Trail                Aluminum         $4,537,610 
##  7 Mountain         Trail                Carbon           $4,835,850 
##  8 Road             Cyclocross           Carbon           $2,108,120 
##  9 Road             Elite Road           Aluminum         $5,637,795 
## 10 Road             Elite Road           Carbon           $9,696,870 
## 11 Road             Endurance Road       Aluminum         $1,612,450 
## 12 Road             Endurance Road       Carbon           $8,768,610 
## 13 Road             Triathalon           Carbon           $4,053,750