jbaba / bigdataassignments

BigDataAssignments

##Hour of Day trips Find number of trips based on hour of the day.

Scripts to find Hour of Day

Get Hour from startTime field

> hourOfDay<-format(as.POSIXct(dtrips$starttime) ,format = "%H")

do group using table command

> groupByHour<-table(hourOfDay)

Command

> barplot((groupByHour), beside = TRUE, col = c("green", "black"),main="Hour of Day",ylab="Freq")

Day Of Week

Number Of trips for day of week.

Script

Get Day name form date

> dayOfWeek<-(weekdays(as.Date(dateOfTrip,'%d-%m-%Y')))

Use data frame to convert vector

> d<-data.frame(dayOfWeek)

Provide Order

> d$dayOfWeek<-factor(d$dayOfWeek,levels=c("Sunday", "Monday","Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"))

Create Group By variable

> groupByDayOfWeek<-table(d[order(d$dayOfWeek),])

Command

> barplot(groupByDayOfWeek,main="Day Of Week",ylab="Freq")

Top Station trips

Find Stations who had highest and lowest number of trips.

Scripts To Find Top 5 City

Get Grouped values for all stations.

> groupByStation←table(dtrips$to_station_name)

Preapre Descending Order Vector

> orderByFreqDesc=order(-groupByStation)

Apply Desc Order Function to our Stations.

> View(groupByStation[orderByFreqDesc])

> top5City <- c(groupByStation[orderByFreq][1:5])

Command

> barplot(top5City,main="Top 5 City Trips",ylab="Freq",ylim=c(0,20000))

Scripts To Find Bottom 5 City

Get Grouped values for all stations.

> groupByStation←table(dtrips$to_station_name)

Make Order Vector

> orderByFreq=order(groupByStation)

Apply Order Function to our Stations.

> View(groupByStation[orderByFreq])

> bottom5City <- c(groupByStation[orderByFreq][1:5])

Command

> barplot(bottom5City,main="Bottom 5 City Trips",ylab="Freq",ylim=c(0,100))

Trips Per Station

Graph shows number of trips per stations. ######Command > barplot(table(dtrips$to_station_name),ylab="Frequency",main="Frequency Per Station",xla="Station Name",ylim=c(0,20000))

User Type Graph

Graph shows Roughly equal number of Customer and Subscribers.

Command

> barplot(table(dtrips$usertype),ylab="Frequency",main="Types Of User",xla="UserType",ylim=c(0,500000))

Gender Graph

Almost half of the user do not provide their Gender information.

Command

> barplot(table(dtrips$gender),ylab="Frequency",main="Gender Of People",xla="Gender",ylim=c(0,500000))

##Month Number of trips in Month

Script

> month <- format(as.POSIXct(dtrips$starttime) ,format = "%m")

> View(month)

> groupByMonth<-table(month)

Command

> barplot(groupByMonth,main="Month Trips",ylab="Freq")

##Month & Seasons: From Graph We can say that Most number of trips in Fall.

Script:

Find Month

> dtrips$month<-months(as.Date(dtrips$starttime))

Find Season

> dtirps$season[dtrips$month=="January"] <- "Winter"

> dtrips$season[dtrips$month=="February"] <- "Winter"

> dtrips$season[dtrips$month=="March"] <- "Spring"

> dtrips$season[dtrips$month=="April"] <- "Spring"

> dtrips$season[dtrips$month=="May"] <- "Spring"

> dtrips$season[dtrips$month=="June"] <- "Summer"

> dtrips$season[dtrips$month=="July"] <- "Summer"

> dtrips$season[dtrips$month=="August"] <- "Summer"

> dtrips$season[dtrips$month=="September"] <- "Fall"

> dtrips$season[dtrips$month=="October"] <- "Fall"

> dtrips$season[dtrips$month=="November"] <- "Fall"

> dtrips$season[dtrips$month=="December"] <- "Winter"

Command:

> barplot(table(dtrips$season), main="Season")

Following Command is used to remove exponential Number Format

> options(scipen = 999)

Extra Commands Used

timeOfTrip <- format(as.POSIXct(dtrips$starttime) ,format = "%H:%M")

dateOfTrip <- as.Date(dtrips$starttime)