我正在使用Windows.当尝试在png设备上绘制图形时,它会因错误而失败.
我的代码:
png("C:\\plot1.png", width = 480, height = 480, units = "px", bg = "white")
par(mar= c(4, 4, 2, 1))
hist(pwrcon$Global_active_power,col = "red", main = "Global Active Power", xlab = "Global Active Power (kilowatts)")
dev.off()
错误:
Error in png("C:\\plot1.png", width = 480, height = 480, units = "px", :
unable to start png() device
In addition: Warning messages:
1: In png("C:\\plot1.png", width = 480, height = 480, units = "px", :
unable to open file 'C:\plot1.png' for writing
2: In …r ×1