or contamination climate change

In Stock

Size Guide

$34.99 $29.99

Shipping and Returns Policy

Operators play a pivotal role in R programming, allowing for a wide range of operations from basic arithmetic to complex logical evaluations. There are three logical operators: and , or , and not . The semantics (meaning) of these operators is similar to their meaning in English. For example, x > 0 ... Comparison operators are used in logical statements to determine equality or difference between variables or values. Given that x = 5 , the table below explains ... A deep dive into logical operators in R. Learn how to change or compare results of comparisons made using relational operators with NOT, OR and AND in R. Jan 27, 2015 ... I'm using a Query Expression to filter some data, and I can't figure out how to combine the LogicalOperator.AND & LogicalOperator.OR together. Nov 15, 2024 ... A system of logic to designed to yield optimal search results. The Boolean operators, AND, OR, and NOT, help you construct a logical search. Apr 12, 2020 ... The option to use logical operators in a filtering query, eg if you would like to get the rows that contain the words “Belgium” and “Bolivia” Jun 24, 2024 ... Logical operators. We use these operators to evaluate a statement to return either a True or a False. Logical operators; Assignment operators; Function operators; String Operators; Literal constructors; Miscellaneous operators. Also see: Operator precedence ... Logical operators. Logical operators evaluate Boolean expressions and determine whether the entire expression is true or false based on the operator used. You ...
  • Next Day Delivery by USPS Find out more

    Order by 9pm (excludes Public holidays)

    $11.99

  • Express Delivery - 48 Hours Find out more

    Order by 9pm (excludes Public holidays)

    $9.99

  • Standard Delivery $6.99 Find out more

    Delivered within 3 - 7 days (excludes Public holidays).

  • Store Delivery $6.99 Find out more

    Delivered to your chosen store within 3-7 days

    Spend over $400 (excluding delivery charge) to get a $20 voucher to spend in-store
  • International Delivery Find out more

    International Delivery is available for this product. The cost and delivery time depend on the country.

You can now return your online order in a few easy steps. Select your preferred tracked returns service. We have print at home, paperless and collection options available.

You have 28 days to return your order from the date it’s delivered. Exclusions apply.

View our full Returns and Exchanges information.

Our extended Christmas returns policy runs from 28th October until 5th January 2025, all items purchased online during this time can be returned for a full refund.

No reviews yet. Only logged in customers who have purchased this product may leave a review.