Created
July 12, 2015 14:23
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Plot xts object with multiple columns
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multiplot = function(r, legend.loc="topleft", legend.cex=1, overplot=F, plotSecondAxis=F, s_lty=1, plotfunc=recplot, legend=T, pointMax=F, pointLast=F, legendLast=F, legendLastRoundDigits=0 ) | |
{ | |
r = na.omit(r) | |
for ( x in names(r) ) | |
{ | |
n = r[,x] | |
m = n | |
r[,x] = m | |
} | |
print(tail(r)) | |
colours = RColorBrewer::brewer.pal(length(names(r)), "Dark2") | |
colours[ 1 ] = "black" | |
firstplot = T | |
count = 1 | |
for ( x in names(r) ) | |
{ | |
if ( firstplot ) | |
{ | |
if ( overplot == T ) | |
{ | |
plotfunc(r[,x], main="") | |
} | |
else | |
{ | |
plotfunc(r[,x], ylim=c(min(r), max(r)), main="") | |
} | |
firstplot = F | |
} | |
else | |
{ | |
if ( overplot == F ) | |
{ | |
lines(r[,x], col=colours[count], lty=s_lty) | |
} | |
else | |
{ | |
par(new=T, xaxt="n", yaxt="n") | |
plot.zoo(r[,x], col=colours[count]) | |
if ( plotSecondAxis == T ) | |
{ | |
par(xaxt="s", yaxt="s") | |
axis(4, col=colours[count] )#, line=count - 1) | |
par(xaxt="n", yaxt="n") | |
} | |
} | |
} | |
if ( pointMax == T ) | |
{ | |
localMax = r[ which.max(r[,x]), x ] | |
print( paste("Maximum for ", x, localMax)) | |
points( localMax, pch=16, col=colours[count] ) | |
} | |
if ( pointLast == T ) | |
{ | |
localLast = last(r[ ,x ]) | |
print( paste("Last for ", x, localLast)) | |
points(localLast, pch=16, col=colours[count] ) | |
} | |
count = count + 1 | |
} | |
par(xaxt="s", yaxt="s") | |
if ( legend == T ) | |
{ | |
legendLabels = names(r) | |
if ( legendLast == T ) | |
{ | |
newLegend = c() | |
for ( x in names(r) ) | |
{ | |
newLegend = c(newLegend, paste(x, ': ', round(last(r[,x]), legendLastRoundDigits), sep='')) | |
} | |
legendLabels = newLegend | |
} | |
legend(legend.loc, legendLabels, col=colours, lty=1, cex=legend.cex) | |
} | |
} |
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