R Programming By Example

Setting up static user inputs

First, we will show how to filter the timestamps in the data to only show observations that fall within a range defined by the user. To do this, we need to first define four timestamps: the minimum, the initial left limit, the initial right limit, and the maximum. These four values will be used by our date range widget to define the allowed range for the user (the minimum and maximum values are used for this), as well as the initial date range (the initial left and right limits are used for this), which may be different from the limits of the allowed range.

Therefore, we need to extract such values, and we do so by making use of the TimeStamp class we created in Chapter 8, Object-Oriented System to Track Cryptocurrencies ...