symbol in the plot
Thank you again, Joh
Based on your code seems I solved the problem.
new code as follows:
cs<-expression(delta[1], delta[2])
plot(sigma, delta1, ylim=range(-0.5, 2), xlab='sigma', ylab='delta', pch=22,
type='o')
points(sigma, delta2, col='red', axes=FALSE, type='o')
legend("topleft", cs, pch = c(21, 22), lty=1, col=2:1)
only concern is there is a waring message in R: Warning message:
In plot.xy(xy.coords(x, y), type = type, ...) :
"axes" is not a graphical parameter
gcheer3 wrote:
a graph question. Thanks a lot in advance. I made two scatterplots on one graph (sigma vs. delta1, sigma vs. delta2) (20 observations of delta1, delta2 and corresponding sigma) the x-axis is sigma, the y-axis is either delta1 or delta2. I connected both scatterplots. To seperate them, one curves is a line with circles, the other curve is a line with squares on it. I want to make a notation either on the y-axis or on the graph. The notiaion is "delta1--square; delta2--circle". So when people look at the graph, they can easily tell each curve's meaning. The curve with squares on it means the sigma vs. delta1, and the curve with circles on it means sigma vs. delta2. I think I can use 'expression' to write delta1, delta2 and sigma in greek letters, but I am not sure how to denote the square and cirle I graphed.
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