View(d)

library(ggplot2)

ggplot(d, aes(y=Sales, x=Year))+geom_line(col="blue")+theme_bw()+geom_point()

c <- ma(d, 5) #moving average #Mcomp package

c

autoplot(d, series="Data")+autolayer(c, series="5-MA")+xlab("Year")+ylab("Sales")+ggtitle("Sales")

Since you have not shown any data, I am guessing at the cause of your problem. The variable *d* seems to be a data frame, since you use it in ggplot(). The function ma(), which comes from the package forecast, takes a univariate time series as its first argument. Here is a quote from the documentation.

ma {forecast} R Documentation

## Moving-average smoothing

## Description

`ma`

computes a simple moving average smoother of a given time series.## Usage

ma(x, order, centre = TRUE)

## Arguments

`x`

Univariate time series `order`

Order of moving average smoother `centre`

If TRUE, then the moving average is centred for even orders.

I would expect ma() to throw an error if you pass it a data frame (edit: if it has more than one column). If my answer has not helped you solve your problem, please tells us what *d* is and what error your are getting. The best way to post is question is with a Reproducible Example.

Thanks for your reply

d was my dataframe.

this is the error which i am getting---

"Error: Objects of type data.frame not supported by autoplot."

I am unable to attach the file.

Kindly find the data below.

year | sales |
---|---|

1 | 23 |

2 | 40 |

3 | 25 |

4 | 27 |

5 | 32 |

6 | 48 |

7 | 33 |

8 | 37 |

9 | 37 |

10 | 50 |

11 | 40 |

my objective was to calculate the moving average.

while plotting i am getting an error.

regards

rahul

Unless you're constrained to use `ggplot2`

and `forecast`

, you can simply do something like this:

```
dataset <- data.frame(year = c(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11),
sales = c(23, 40, 25, 27, 32, 48, 33, 37, 37, 50, 40))
with(data = dataset,
expr = {
original_time_series <- ts(data = sales)
moving_averages <- filter(x = original_time_series,
filter = rep(x = (1 / 5),
times = 5))
matplot(x = year,
y = cbind(original_time_series, moving_averages),
type = "o",
lty = c(1, 3),
lwd = c(1, 2),
pch = c(1, 19),
col = c(1, 2),
xlab = "year",
ylab = "sales",
main = "Annual vs 5-Year Moving Average")
legend(x = 7,
y = 30,
legend = c("Annual", "5-Year Moving Average"),
col = c(1, 2),
lty = c(1, 3),
lwd = c(1, 2),
pch = c(1, 19))
})
```

^{Created on 2019-06-30 by the reprex package (v0.3.0)}

thankyou for your reply.

I was trying to plot Moving average using MA function because I have to perform this with function. I am getting the values of moving average but while performing in ggplot i am getting an error.

if you will use ma it will calculate the values. while plotting the ma values together with annual value i am getting an error.

I want to attach my csv file but i cannot attach the any files because I am new user.

Best regards

rahul

Here is an example of plotting your data using ggplot and the ma() function.

```
library(forecast)
#> Warning: package 'forecast' was built under R version 3.5.3
library(ggplot2)
d <- data.frame(Year = seq(1,11),
Sales = c(23, 40, 25, 27, 32, 48, 33, 37, 37, 50, 40))
ggplot(d, aes(y=Sales, x=Year))+geom_line(col="blue")+theme_bw()+geom_point()
```

```
d$MovingAvg <- ma(d$Sales, 5)
ggplot(data = d)+geom_line(aes(y=Sales, x=Year), col="blue")+
theme_bw()+ geom_point(aes(y=Sales, x=Year)) +
geom_line(aes(y=MovingAvg, x=Year), color = "red") +
geom_point(aes(y=MovingAvg, x=Year))
#> Warning: Removed 4 rows containing missing values (geom_path).
#> Warning: Removed 4 rows containing missing values (geom_point).
```

^{Created on 2019-06-30 by the reprex package (v0.2.1)}

thank you very much. it really helped me.

i appreciated. thanks alot.

best regards

rahul:grinning:

A little help with the styling

```
library(zoo)
library(tidyverse)
d <- data.frame(
year = c(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11),
sales = c(23, 40, 25, 27, 32, 48, 33, 37, 37, 50, 40)
)
d %>%
mutate(ma=rollapply(sales,5,mean,align='center',fill=NA)) %>%
gather(series, sales, -year) %>%
ggplot(aes(x=year, y=sales, color = series)) +
geom_line(aes(linetype = series), key_glyph = "timeseries") +
geom_point() +
labs(title = "Annual vs 5-Year Moving Average",
color = "",
linetype = "") +
scale_color_discrete(labels = c("5-Year Moving Average", "Anual")) +
scale_linetype_discrete(labels = c("5-Year Moving Average", "Anual")) +
theme_bw() +
theme(legend.position = "bottom")
```

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