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| data <- read.table("household_power_consumption.txt", header = TRUE, sep = ";", na.strings = "?", colClasses = c("character", "character", "numeric")) | ||
| data <- subset(data, Date == "1/2/2007" | Date == "2/2/2007") | ||
| png(file = "plot1.png", width = 480, height = 480) | ||
| hist(data$Global_active_power, col = "red", xlab = "Global Active Power (kilowatts)", main = "Global Active Power") | ||
| dev.off() |
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| data <- read.table("household_power_consumption.txt", header = TRUE, sep = ";", na.strings = "?", colClasses = c("character", "character", "numeric")) | ||
| data <- subset(data, Date == "1/2/2007" | Date == "2/2/2007") | ||
| png(file = "plot2.png", width = 480, height = 480) | ||
| plot(data$Global_active_power, type = "l", ylab = "Global Active Power (kilowatts)", xlab = "", xaxt = "n") | ||
| axis(1, c(0, nrow(data) / 2, nrow(data)), c("Thu", "Fri", "Sat")) | ||
| dev.off() |
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| data <- read.table("household_power_consumption.txt", header = TRUE, sep = ";", na.strings = "?", colClasses = c("character", "character", "numeric")) | ||
| data <- subset(data, Date == "1/2/2007" | Date == "2/2/2007") | ||
| png(file = "plot3.png", width = 480, height = 480) | ||
| plot(data$Sub_metering_1, type = "l", ylab = "Energy sub metering", xlab = "", xaxt = "n") | ||
| lines(data$Sub_metering_2, col = "red") | ||
| lines(data$Sub_metering_3, col = "blue") | ||
| axis(1, c(0, nrow(data) / 2, nrow(data)), c("Thu", "Fri", "Sat")) | ||
| legend("topright", | ||
| c("Sub_metering_1", "Sub_metering_2", "Sub_metering_3"), | ||
| lwd=c(2.5,2.5), | ||
| col = c("black", "red", "blue")) | ||
| dev.off() |
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| data <- read.table("household_power_consumption.txt", header = TRUE, sep = ";", na.strings = "?", colClasses = c("character", "character", "numeric")) | ||
| data <- subset(data, Date == "1/2/2007" | Date == "2/2/2007") | ||
| png(file = "plot4.png", width = 480, height = 480) | ||
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| par(mfrow=c(2, 2)) | ||
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| plot(data$Global_active_power, type = "l", ylab = "Global Active Power", xlab = "", xaxt = "n") | ||
| axis(1, c(0, nrow(data) / 2, nrow(data)), c("Thu", "Fri", "Sat")) | ||
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| plot(data$Voltage, type = "l", ylab = "Voltage", xlab = "datetime", xaxt = "n") | ||
| axis(1, c(0, nrow(data) / 2, nrow(data)), c("Thu", "Fri", "Sat")) | ||
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| plot(data$Sub_metering_1, type = "l", ylab = "Energy sub metering", xlab = "", xaxt = "n") | ||
| lines(data$Sub_metering_2, col = "red") | ||
| lines(data$Sub_metering_3, col = "blue") | ||
| axis(1, c(0, nrow(data) / 2, nrow(data)), c("Thu", "Fri", "Sat")) | ||
| legend("topright", | ||
| c("Sub_metering_1", "Sub_metering_2", "Sub_metering_3"), | ||
| lwd=c(2.5,2.5), | ||
| col = c("black", "red", "blue"), | ||
| bty = "n") | ||
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| plot(data$Global_reactive_power, type = "l", ylab = "Global_reactive_power", xlab = "datetime", xaxt = "n") | ||
| axis(1, c(0, nrow(data) / 2, nrow(data)), c("Thu", "Fri", "Sat")) | ||
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| dev.off() |
