quarter

Quarter number of input date and time

Syntax

q = quarter(t)

Description

q = quarter(t) returns the quarter numbers for each date and time specified in t.

The q output is a double array containing integer values from 1 to 4.

Examples

Find Quarter Number of Dates

t = datetime(2013,05,31):calmonths(3):datetime(2014,05,31)

t = 1×5 datetime
   31-May-2013   31-Aug-2013   30-Nov-2013   28-Feb-2014   31-May-2014

q = quarter(t)

q = 1×5

     2     3     4     1     2

Input Arguments

t — Input date and time

datetime array

Input date and time, specified as a datetime array.

To support existing code that previously required Financial Toolbox™, quarter also accepts serial date numbers and text as inputs, but they are not recommended. For more information, see Version History.

Extended Capabilities

Tall Arrays

Calculate with arrays that have more rows than fit in memory.

The quarter function fully supports tall arrays. For more information, see Tall Arrays.

Thread-Based Environment

Run code in the background using MATLAB® backgroundPool or accelerate code with Parallel Computing Toolbox™ ThreadPool.

This function fully supports thread-based environments. For more information, see Run MATLAB Functions in Thread-Based Environment.

Distributed Arrays

Partition large arrays across the combined memory of your cluster using Parallel Computing Toolbox™.

This function fully supports distributed arrays. For more information, see Run MATLAB Functions with Distributed Arrays (Parallel Computing Toolbox).

Version History

Introduced in R2014b

R2022a: Serial date number and text inputs not recommended

Although quarter supports serial date number and text inputs, datetime values are recommended instead. The datetime data type provides flexible date and time formats, storage out to nanosecond precision, and properties to account for time zones and daylight saving time.

To convert serial date numbers or text to datetime values, use the datetime function. For example:

t = datetime(738427.656845093,"ConvertFrom","datenum");
q = quarter(t)

q =

     3

There are no plans to remove support for serial date number or text inputs.

R2022a: quarter functions from Financial Toolbox and MATLAB combined

In previous releases, there were two quarter functions: one in MATLAB^® that accepted datetime values, and one in Financial Toolbox that accepted serial date numbers or text values. As of R2022a, you can call quarter without Financial Toolbox. When you call quarter from MATLAB, it accepts all previous input types.

For example, you can make these calls with a serial date number and text from MATLAB:

q = quarter(738427.656845093)

q =

     3

q = quarter("28-Sep-2021")

q =

     3

Nonstandard Calendar and Date Format

In addition, quarter accepts two other inputs when the first input is not a datetime array. You can specify a second input (month1) for the first month of the financial calendar you are using. You can also specify a third input (F) for the date format.

q = quarter(t,month1)
q = quarter(t,month1,F)

To determine the quarter of t with respect to a different financial calendar, specify month1 as an integer between 1–12 (corresponding to the months from January to December). For example, if the fiscal year of your calendar starts on October 1, specify month1 as 10.

q = quarter("2021/28/09",10)

q =

     4

To interpret t using a particular date format, specify F using a valid date format as documented for the datestr function, though 'Q' format specifiers are not supported. For example:

q = quarter("2021/28/09",1,"yyyy/dd/mm")

q =

     3