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POHow to plot S&P 500 and Sotheby's Time Series in one ggplot?
 

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  1. POHow to plot S&P 500 and Sotheby's Time Series in one ggplot?
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    <p>I am downloading with the quantmod package the S&amp;P 500 time series and the Sotheby's stock:</p> <pre><code>library(zoo) library(tseries) library(quantmod) library(ggplot2) env1 = new.env() getSymbols("^GSPC", env = env1, src ="yahoo", from = as.Date("1988-06-01"),to = as.Date("2013-05-29")) GSPC = env1$GSPC gspc.df = data.frame(date=time(GSPC), coredata(GSPC)) env2 = new.env() getSymbols("BID", env = env2, src ="yahoo", from = as.Date("1988-06-01"),to = as.Date("2013-05-29")) BID = env2$BID sothebys.df = data.frame(date=time(BID), coredata(BID)) </code></pre> <p>My objective is to merge or melt the Adjusted Prices together and plot them with ggplot. However, I have problems with the df frame:</p> <pre><code>t = as.Date(0:9128, origin="1988-06-01") y1 = gspc.df$GSPC.Adjusted y2 = sothebys.df$BID.Adjusted df = data.frame(t=t, values=c(y2,y1), type=rep(c("Bytes", "Changes"), each=9129)) g = ggplot(data=df, aes(x=t, y=values)) + geom_line() + facet_grid(type ~ ., scales="free") + scale_y_continuous(trans="log10") + ylab("Log values") g </code></pre> <p>When I try to execute the df = data... line I get an error concerning the number of rows. How can I melt or merge the data, so that I can use them for the combined ggplot?</p> <h1>EDIT</h1> <p>The graph works fine. In the last step I included the recession bars into the graph. The following code produces the recession bars including the normalized times seres:</p> <pre><code>recessions.df = read.table(textConnection( "Peak, Trough 1857-06-01, 1858-12-01 1860-10-01, 1861-06-01 1865-04-01, 1867-12-01 1869-06-01, 1870-12-01 1873-10-01, 1879-03-01 1882-03-01, 1885-05-01 1887-03-01, 1888-04-01 1890-07-01, 1891-05-01 1893-01-01, 1894-06-01 1895-12-01, 1897-06-01 1899-06-01, 1900-12-01 1902-09-01, 1904-08-01 1907-05-01, 1908-06-01 1910-01-01, 1912-01-01 1913-01-01, 1914-12-01 1918-08-01, 1919-03-01 1920-01-01, 1921-07-01 1923-05-01, 1924-07-01 1926-10-01, 1927-11-01 1929-08-01, 1933-03-01 1937-05-01, 1938-06-01 1945-02-01, 1945-10-01 1948-11-01, 1949-10-01 1953-07-01, 1954-05-01 1957-08-01, 1958-04-01 1960-04-01, 1961-02-01 1969-12-01, 1970-11-01 1973-11-01, 1975-03-01 1980-01-01, 1980-07-01 1981-07-01, 1982-11-01 1990-07-01, 1991-03-01 2001-03-01, 2001-11-01 2007-12-01, 2009-06-01"), sep=',', colClasses=c('Date', 'Date'), header=TRUE) recessions.trim = subset(recessions.df, Peak &gt;= min(gspc.df$date)) g.gspc = ggplot(data = df2) + geom_line(aes(x = Date, y = GSPC, colour = "blue")) + geom_line(aes(x = Date, y = Sothebys, colour = "red")) + theme_bw() g.gspc = g.gspc + geom_rect(data=recessions.trim, aes(xmin=Peak, xmax=Trough, ymin=-Inf, ymax=+Inf), fill='pink', alpha=0.4) plot(g.gspc) </code></pre> <p><img src="https://i.stack.imgur.com/8qKqZ.jpg" alt="Normalized SP500 and Sothebys share including recession bars"></p> <p>Thank you very much for your assistance / teaching. I am quite new to programming and R, thanks for helping me to improve :)</p> <p>By the way, if somebody has an idea to further improve this solution, please comment! Thx</p>
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      1. POHow to plot S&P 500 and Sotheby's Time Series in one ggplot?
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    1. COWelcome to stackoverflow. The exact error might point to the problem directly, without having to reproduce your example. So could you edit your post to include the exact error message?
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    2. COAlso, this recent post might help you with what you're trying to do. If I'm not mistaken, it even uses the same datasets: http://stackoverflow.com/questions/16703204/overlap-time-series-with-different-dataframes/16703580#16703580
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    3. CODear Thunk, the exact error message is in German. My problem is exactly this line: df = data.frame(t=t, values=c(y2,y1), type=rep(c("Bytes", "Changes"), each=9129))
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