【发布时间】:2014-11-10 08:26:37
【问题描述】:
我想在 data.frame xy 中为每个组(由 ID 定义)绘制数据。当 1946 年之前的一年在一个组中时,plot 2 应该被执行。当年份在 1946 年和 2014 年之间时,应执行 plot1。
我的问题:如果没有 NA 值,这可以正常工作,但是由于我有数据间隙,我依靠 NA 来定义这些数据间隙。这就是我收到错误消息的原因:error in plot.window(need finite 'ylim' values)。我试图将finite=T 放在y 轴上的plot1 中,但这会产生subscript out of bounds 错误。有没有办法可以解决这个问题并且正确绘制图形?
以下是我的代码:它很长,但大部分代码由我所依赖的plot() 选项组成。
# read in sample data and split it up by group (defined by ID)
xy <- data.frame(NAME=c("NAME2","NAME2","NAME2","NAME2","NAME2","NAME3","NAME3","NAME3","NAME3","NAME5","NAME5","NAME5","NAME5"), ID=c(48,48,48,48,48,32,32,32,32,67,67,67,67),YEAR=c(1981,1983,1984,1988,1989,1984,1984,1988,1988,1899,1933,1948,1958),VALUE=c(0,205,-570,0,-310,-3680,-3680,NA,-3680,0,NA,13,-98))
ind <- split(x = xy,f = xy[,'ID'])
# Plot Scenario 1: if only years between 1946 and 2014 are present for each group do this:
plot1 <- function(x) {
fname <- paste0(x[1, 'ID'], '.png')
png(fname, width=1679, height=1165, res=150)
par(mar=c(6,8,6,5))
plot(x = c(1946, 2014),
y = range(x$VALUE),
type='n',
main=x[1, 'NAME'],
xlab="Time [Years]",
ylab="Value")
axis(2, at = seq(-100000, 100000, 500), cex.axis=1, labels=FALSE, tcl=-0.3)
points(ind[[i]][,c('YEAR','VALUE')], type="l", lwd=2)
points(ind[[i]][,c('YEAR','VALUE')], type="p", lwd=1, cex=1, pch=21, bg='white')
abline(h=0)
dev.off()
}
# Plot Scenario 2 if years under 1946 are present do this:
plot2 <- function(x) {
fname <- paste0(x[1, 'ID'], '.png')
png(fname, width=1679, height=1165, res=150)
par(mar=c(6,8,6,5))
plot(x[,c('YEAR','VALUE')],
type='n',
main=x[1, 'NAME'],
xlab="Time [Years]",
ylab="Value [mm]")
axis(2, at = seq(-100000, 100000, 500), cex.axis=1, labels=FALSE, tcl=-0.3)
points(ind[[i]][,c('YEAR','VALUE')], type="l", lwd=2)
points(ind[[i]][,c('YEAR','VALUE')], type="p", lwd=1, cex=1, pch=21, bg='white')
abline(h=0)
dev.off()
}
# Execute functions
lapply(ind, function(x) ifelse(any(x$YEAR < 1946 & x$YEAR < 2014), plot2(x), plot1(x)))
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