Kurssisisältö
R Introduction: Part I
R Introduction: Part I
Vectors
It's time to explore how to store multiple values within a single variable, which can be efficiently done using vectors.
It's essential to understand that a vector must contain data of the same type; this means you cannot mix integers, complex numbers, and logical values in a single vector.
Creating a vector in R is straightforward: just list all the values separated by commas inside the c() function. Here's how you do it:
vec <- c(1, 2, 3) # Create a vector vec # Output its value
When you input different data types within the c() function, R will default to one type for all elements. For instance, in a vector like c(1, 2, 'some text'), all numeric values will be converted to text. The reasoning is straightforward: if you attempt to construct a vector with varying types, R will select the one type to which all values can be converted.
Swipe to start coding
Now, let's examine which types will be adopted when a vector consists of different data types.
- Display the vector containing the elements
0,10.5, and20, in that specific order. - Display the vector containing the elements
1,2.5, and5 + 10i, in that order. - Display the vector containing the elements
2.5,TRUE, and5, in that order. - Display the vector containing the elements
FALSE,25.5, and'R', in that order.
Ratkaisu
Vaihda työpöytään todellista harjoitusta vartenJatka siitä, missä olet käyttämällä jotakin alla olevista vaihtoehdoistaKiitos palautteestasi!
Vectors
It's time to explore how to store multiple values within a single variable, which can be efficiently done using vectors.
It's essential to understand that a vector must contain data of the same type; this means you cannot mix integers, complex numbers, and logical values in a single vector.
Creating a vector in R is straightforward: just list all the values separated by commas inside the c() function. Here's how you do it:
vec <- c(1, 2, 3) # Create a vector vec # Output its value
When you input different data types within the c() function, R will default to one type for all elements. For instance, in a vector like c(1, 2, 'some text'), all numeric values will be converted to text. The reasoning is straightforward: if you attempt to construct a vector with varying types, R will select the one type to which all values can be converted.
Swipe to start coding
Now, let's examine which types will be adopted when a vector consists of different data types.
- Display the vector containing the elements
0,10.5, and20, in that specific order. - Display the vector containing the elements
1,2.5, and5 + 10i, in that order. - Display the vector containing the elements
2.5,TRUE, and5, in that order. - Display the vector containing the elements
FALSE,25.5, and'R', in that order.
Ratkaisu
Vaihda työpöytään todellista harjoitusta vartenJatka siitä, missä olet käyttämällä jotakin alla olevista vaihtoehdoistaKiitos palautteestasi!
Vaihda työpöytään todellista harjoitusta vartenJatka siitä, missä olet käyttämällä jotakin alla olevista vaihtoehdoista