tscollection

Create tscollection object

Description

A tscollection object is a collection of one or more timeseries objects with the same time vector. Collections of timeseries are useful for analyzing multiple data trends that occur simultaneously.

Creation

To create a tscollection object, use the tscollection function.

Syntax

tsc = tscollection(ts)

tsc = tscollection(timevals)

Description

tsc = tscollection(ts) creates a tscollection object containing the timeseries objects in ts. The input ts can be a single timeseries object or a cell array of timeseries objects. Each timeseries must have the same time vector.

tsc = tscollection(timevals) defines the time vector of a tscollection.

Input Arguments

ts — Input timeseries

scalar | cell array

Input timeseries, specified as a scalar or a cell array.

timevals — Sample times

scalar | vector

Sample times, specified as a numeric scalar or vector, or a cell array of date character vectors. Valid date character vectors can have the following forms:

Format	Example
dd-mmm-yyyy HH:MM:SS	01-Mar-2000 15:45:17
dd-mmm-yyyy	01-Mar-2000
mm/dd/yy	03/01/00
mm/dd	03/01
HH:MM:SS	15:45:17
HH:MM:SS PM	3:45:17 PM
HH:MM	15:45
HH:MM PM	3:45 PM
mmm.dd,yyyy HH:MM:SS	Mar.01,2000 15:45:17
mmm.dd,yyyy	Mar.01,2000
mm/dd/yyyy	03/01/2000

Data Types: double | single | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | cell

Name-Value Pair ArgumentsExample: tsc = tscollection(ts,'Name','MyTSC')

Specify optional comma-separated pairs of Name,Value arguments. Name is the argument name and Value is the corresponding value. Name must appear inside single quotes (' '). You can specify the name and value pair arguments in any order as Name1,Value1,Name2,Value2.

'Name' — tscollection name

character vector

tscollection name, specified as a character vector.

'isDatenum' — datenum indicator

true (default) | false

datenum indicator, specified as true or false. A value of true indicates that the time vector of the tscollection object consists of datenum values. For more information, see datenum.

Data Types: logical

Properties

Name — tscollection name

character vector

tscollection name, represented as a character vector.

Time — Time values

vector

Time values, represented as a vector.

When TimeInfo.StartDate is empty, values are measured relative to 0. When TimeInfo.StartDate is defined, values represent date character vectors measured relative to the StartDate.

The length of Time must be the same as the first or the last dimension of Data for each collection.

TimeInfo — Time information

collection of fields

Time information, represented as a collection of the following fields describing the time vector:

• Units — Time units with the value 'weeks', 'days', 'hours', 'minutes', 'seconds', 'milliseconds', 'microseconds', or 'nanoseconds'.

• Start — Start time.

• End — End time (read only).

• Increment — Interval between subsequent time values (NaN when times are not uniformly sampled).

• Length — Length of time vector (read only).

• Format — Character vector defining the date display (see datestr).

• StartDate — Date character vector defining the reference date (see setabstime).

• UserData — Additional user-defined information.

To access the value of a field, use the form tsc.TimeInfo.field for a tscollection object tsc.

Object Functions

Modify and Combine

addsampletocollection	Add sample to tscollection
addts	Add timeseries to tscollection
delsamplefromcollection	Delete sample from tscollection
horzcat	Horizontally concatenate tscollection objects
removets	Remove timeseries from tscollection
resample	Resample tscollection time vector
set	Set tscollection properties
setabstime	Set tscollection times as date character vectors
settimeseriesnames	Rename timeseries in tscollection
vertcat	Vertically concatenate tscollection objects

Query

get	Query tscollection properties
getabstime	Convert tscollection time vector to cell array
getsampleusingtime	Subset of tscollection data
gettimeseriesnames	Names of timeseries in tscollection
isempty	Determine if tscollection is empty
length	Length of tscollection time vector
size	Size of tscollection

Examples

Create tscollection

Create a tscollection object from two timeseries objects.

ts1 = timeseries([1.1 2.9 3.7 4.0 3.0]',1:5,...
'Name','Acceleration');
ts2 = timeseries([3.2 4.2 6.2 8.5 1.1]',1:5,...
'Name','Speed');
ts = tscollection({ts1;ts2})

Time Series Collection Object: unnamed

Time vector characteristics

      Start time            1 seconds
      End time              5 seconds

Member Time Series Objects:

      Acceleration
      Speed