我也遇到了这个问题,并通过调用图形参数函数 par() 和参数子集来解决它,最重要的是,将new=TRUE
在每个额外的plot()调用之前,在par()调用中,而不是在plot()调用中。例如:
png(fullname,
width = 3000,
height= 3000)
# original par() call
par(mfrow=c(1,1), cex=3, mar=c(3,3,3,7), bg=bgcol, col=txtcol)
# first plot
plot(zreate,
maxpixels=ncell(zreate),
col=qcol,
colNA=mapbg,
xaxt='n',
yaxt='n',
ext=map_extent,
breaks=tq,
bty='n',
legend=FALSE)
#second plot and par() call
par(mfrow=c(1,1), cex=3, mar=c(3,3,3,7), bg=bgcol, col=txtcol, new=TRUE)
plot(rt,
maxpixels=ncell(rt),
col=dcol,
legend=FALSE,
xaxt='n',
yaxt='n',
ext=map_extent,
bty='n')
#third plot and par() call
par(mfrow=c(1,1), cex=3, mar=c(3,3,3,7), bg=bgcol, col=txtcol, new=TRUE)
plot(r0,
maxpixels=ncell(r0),
col="#9e9ac8",
xaxt='n',
yaxt='n',
ext=map_extent, #PRENAFILTERING fix
bty='n',
legend=FALSE)