search for: y1rang

...========== x <- demog$age y1 <- demog$mji y2 <- demog$nles xhist <- hist(x, plot=FALSE) y1hist <- hist(y1, plot=FALSE) y2hist <- hist(y2, plot=FALSE) top1 <- max(c(xhist$counts, y1hist$counts)) top2 <- max(c(xhist$counts, y2hist$counts)) xrange <- range(x,na.rm=TRUE) y1range <- range(y1,na.rm=TRUE) y2range <- range(y2,na.rm=TRUE) def.par <- par(no.readonly = TRUE) par(mfrow=c(2,2)) nf <- layout(matrix(c(2,0,1,3),2,2,byrow=TRUE), c(3,1), c(1,3), TRUE) par(mar=c(3,3,1,1)) plot(x, y1, xlim=xrange, ylim=y1range, xlab="Age", ylab="MJI")...

Dear List, I have a richness data distributing across 20 N to 20 S latitude. (120 E-140 E longitude). I would like to draw the richness in the north hemisphere and a regression line in the plot (x-axis: latitude, y-axis: richness in the north hemisphere). The above demand is done using plot. Then, south hemisphere richness and regression are required to be generated using the same y-axis above