Hi I am trying to create a uniform distribution which is Uniform(0, 0.1) which takes a value lambda. I am getting an error message which I believe to do with my loop structure, which says"Error in while (t_time[length(t_time)] <= 0.1) { :

argument is of length zero" Can someone please help?

# Error in while (t_time[length(t_time)] <= 0.1) { : argument is of length zero

Why dont you' try to do it outside a function first, you will see there are multiple mistakes. You define t_time as an empty vector, then try and query it in `while`

, this raises the error. Also the first argument of runif is the number of values you want. Then you try to assign this vector to a single value of a vector. Then you use the last value of cumsum, which is just sum. Then you add the vector t_time to the scaler count. !??!???!??!!!

The problem is that

```
t_time[length(t_time)]
```

returns NULL when you first reach the while() statement. Perhaps you want to use repeat() with a break statement.

Also:

- Vectors in R are indexed from one, so starting count at zero may cause problems with statements like

```
y_time[count]
```

- arrivals is a vector, so you cannot assign it to an element of y_time as you did in

```
y_time[count] = arrivals
```

- t_time seems to be intended to have several elements. Doing

```
count = count + t_time
```

Will add count to every element of t_time and store the result in count, making count a multi-element vector. Is that what you want?

```
t_time <- c()
length(t_time) #0
t_time[0] #NULL
t_time[length(t_time)] #NULL
t_time[length(t_time)] < 0 #logical(0)
if(TRUE){cat('foo')} # 'foo'
if(logical(0)){cat('bar')} # argument is of length zero
```

A conditional like `if`

or `while`

needs a logical vector of length 1 to operate on. Basically, it needs a `TRUE`

or a `FALSE`

, and `logical(0)`

is neither of those.

Is it possible to show me this in my code? Many Thanks

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