I need to import two columns (time and temp) worth of data from a .csv file into R and convert it to a time-series and the plot it with a linear regression line. So far this is my approach:

```
Wintemp <- read.csv("FileName.csv")
Wintemp.ts <- as.ts(Wintemp)
plot(Wintemp,type="l")
```

I am able to successfully get a graph of the time series with the code above.

However I am having trouble with plotting the linear regression line. This is the code I have attempted with:

```
lm(formula = Wintemp) #Gives wrong values as my independent variable is time not temperature.
```

```
Call: lm(formula = Wintemp)
Coefficients:
(Intercept)
635.2
Temp -18.5
```

```
Lfit <- 635.3 - 18.5 * Wintemp
ts.plot(Wintemp.ts,Lfit, xlab = "time", ylab = "Temp")
```

This plots a line but it is far from correct.

I am new to R, could you please help with what the simplest way to perform these set of actions would be? Or what are the mistakes I am making?

Thank you, any help is very much appreciated.