[R-SIG-Finance] Error plotting a zoo object

[Joshua Ulrich]

Hi Baki,

Please follow the posting guide and use plain text.  Your HTML message was
mangled.

Here's a simple example that reproduces the behavior:
library(quantmod)
library(ggplot2)
bist100 <- getSymbols("XU100.IS", from="2011-01-01")
bist100 <- Cl(XU100.IS)
bist100na <- na.approx(bist100)
ggplot(bist100na, aes(x = date, y = XU100.IS.Close)) + geom_line()

You get an error because "date" is a function in 'base'.

You can either use 'autoplot()`:
autoplot(bist100na)

Or you can fortify the object yourself, but then you have to name the `x`
and `y` columns correctly.  By default, the xts/zoo index is put in a
column named "Index".  So the ggplot() call would look like:
ggplot(fortify(bist100na), aes(x = Index, y = XU100.IS.Close)) + geom_line()

It is also very easy to use xts or zoo plotting via the plot() function:
plot(bist100na)

Hope that helps.

Best,
Josh


On Thu, Nov 15, 2018 at 5:34 PM Baki UNAL via R-SIG-Finance <
r-sig-finance using r-project.org> wrote:

> Hello
> My code is:
>
>
> library(quantmod)library(tseriesChaos)library(nonlinearTseries)library(zoo)library(ggplot2)
> bist100 <- getSymbols("XU100.IS", from="2011-01-01")
> bist100 <- XU100.IS$XU100.IS.Close
> bist100na <- na.approx(bist100)
> bist100norm <- (bist100na - (min(bist100na)))/(max(bist100na) -
> min(bist100na))
> my_rqa_det <- function(mydata) {  rqa.analysis=rqa(time.series = mydata,
> embedding.dim=11, time.lag=1,
>  radius=0.05,lmin=2,do.plot=FALSE,distanceToBorder=2)  mydet <-
> rqa.analysis$DET  return(mydet)}
> rollbist100norm<- rollapply(bist100norm, 260, my_rqa_det, by.column =
> TRUE,                             align = "right")
> rollbist100normna <- na.omit(rollbist100norm)
> ggplot(rollbist100normna, aes(x = date, y = det)) + geom_line()
>
>
> I tried to plot "rollbist100normna" in the last line but I got the
> following error:
>
>
> Don't know how to automatically pick scale for object of type function.
> Defaulting to continuous.Don't know how to automatically pick scale for
> object of type function. Defaulting to continuous.Error: Columns `x`, `y`
> must be 1d atomic vectors or listsCall `rlang::last_error()` to see a
> backtrace
>
>
> How can I fix this problem?
> Best regards.
> Baki
>
>
>
>
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>
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-- 
Joshua Ulrich  |  about.me/joshuaulrich
FOSS Trading  |  www.fosstrading.com
R/Finance 2018 | www.rinfinance.com

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