troubles with displaying legend on the plot
Hi! It seems, that y-coord of your legend (1979,0), (0,0) located
outside your coordinate system.
par(usr=c(1979,2002,20,90),mar=c(7, 4, 4, 2) + 0.1)
You can use par('usr') to determine extremes of your coordinates
for automatic legend placing. Or you can
legend(locator(1),[other options])
to place legend on your plot interactively.
Notice, that the y-coord has its 0 in the _bottom_ of figure region.
Wladimir Eremeev wrote:
Dear colleagues, I have troubles while trying to display legend on the plot. I have data.frame fr
fr
year M1 M2
1 1979 58.85198 56.77303
2 1980 57.59725 55.93749
3 1981 57.32133 55.55232
4 1982 54.69320 53.10566
5 1983 56.58973 55.03811
6 1984 58.81363 56.97641
7 1985 58.35583 56.82091
8 1986 60.41842 58.45457
9 1987 58.75928 57.03679
10 1988 59.89553 58.69077
11 1989 51.03595 49.45001
12 1990 52.23915 50.96713
13 1991 46.50311 45.50370
14 1992 47.38811 46.31649
15 1993 48.58066 47.44610
16 1994 46.04452 44.82441
17 1995 46.41809 45.54565
18 1996 37.65783 36.48118
19 1997 60.16313 58.63771
20 1998 51.47550 50.43720
21 1999 52.56228 51.64243
22 2000 41.71746 40.79734
23 2001 44.71175 44.05241
24 2002 49.78033 47.91608
actually I've loaded it from MySQL database.
Now drawing this plot with the following plot.r
===8<====
op<-par(no.readonly=TRUE);
par(usr=c(1979,2002,20,90),mar=c(7, 4, 4, 2) + 0.1);
plot(fr$year,fr$M1
,cex=0.8
,type="o",ylim=c(20,90),xlim=c(1979,2002)
,xlab="year",ylab="M, %"
,pch=20
,xaxt="n",
);
lines(fr$year,fr$M2);
points(fr$year,fr$M2,pch=21)
axis(1,at=c(1979:2002));
for(x in 1979:2002) {
abline(v=x, col = "lightgray", lty = "dotted");
}
for(y in seq(20,90,10)){
abline(h=y, col = "lightgray", lty = "dotted");
}
legend(1979,0,
legend=c("M1","M2"),
pch=c(20,21));
par(op);
===8<===
Legend doesn't appear.
I tried different coordinates, (1979,0), (0,0),
different colors, etc...
Nothing helps. What should I do to make the legend to appear?
I'm using R 1.6.2 for windows.
OS: Windows NT workstation 4.0.
Thank you in advance.