plot

Plottimeseries

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Syntax

plot(ts)

plot(ts,LineSpec)

Description

example

plot(ts)plots thetimeseriesdata intsagainst time, interpolating values between samples.

example

plot(ts,LineSpec)plots thetimeseriesdata using a line graph and applies the specifiedspecsto lines, markers, or both.

You can also specify name-value arguments to defineLine Properties.

Examples

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Plot Time Series Object with Specified Start Date

Open Live Script

Create a time series object, set the start date, and then plot the time vector relative to the start date.

x = [2 5 8 2 11 3 6]; ts1 = timeseries(x,1:7); ts1.Name ='Daily Count'; ts1.TimeInfo.Units ='days'; ts1.TimeInfo.StartDate ='01-Jan-2011';% Set start date.ts1.TimeInfo.Format ='mmm dd, yy';% Set format for display on x-axis.ts1.Time = ts1.Time - ts1.Time(1);% Express time relative to the start date.plot(ts1)

Figure contains an axes object. The axes object with title Time Series Plot:Daily Count contains an object of type line.

Plot Two Time Series Objects on the Same Axes

Open Live Script

Create two time series objects from traffic count data, and then plot them in sequence on the same axes. Add an event to one series, which is automatically displayed with a red marker.

loadcount.dat; count1 = timeseries(count(:,1),1:24); count1.Name ='Oak St. Traffic Count'; count1.TimeInfo.Units ='hours'; plot(count1,':b') gridon

Figure contains an axes object. The axes object with title Time Series Plot:Oak St. Traffic Count contains an object of type line.

Obtain time of maximum value and add it as an event:

[~,index] = max(count1.Data); max_event = tsdata.event('peak',count1.Time(index)); max_event.Units ='hours';

Add the event to the time series:

count1 = addevent(count1,max_event);

Replace plot with new one showing the event:

plot(count1,'.-b') gridon

Figure contains an axes object. The axes object with title Time Series Plot:Oak St. Traffic Count contains 2 objects of type line.

Make a new time series object from column 2 of the same data source:

count2 = timeseries(count(:,2),1:24); count2.Name ='Maple St. Traffic Count'; count2.TimeInfo.Units ='Hours';

Turn hold on to add the new data to the plot:

holdon

The plot method does not add labels to a held plot. Use property/value pairs to customize markers:

plot(count2,'s-m','MarkerSize',6),

Figure contains an axes object. The axes object with title Time Series Plot:Oak St. Traffic Count contains 3 objects of type line.

Labels are erased, so generate them manually:

title('Time Series: Oak Street and Maple Street') xlabel('Hour of day') ylabel('Vehicle count')

Add a legend in the upper left:

legend('Oak St.','Maple St.','Location','northwest')

Figure contains an axes object. The axes object with title Time Series: Oak Street and Maple Street contains 3 objects of type line. These objects represent Oak St., Maple St..

Input Arguments

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`ts`—Input`timeseries`
scalar

Inputtimeseries, specified as a scalar.

`LineSpec`—Line style, marker, and color
character vector|string

Line style, marker, and color, specified as a character vector or string containing symbols. The symbols can appear in any order. You do not need to specify all three characteristics (line style, marker, and color). For example, if you omit the line style and specify the marker, then the plot shows only the marker and no line.

Example:'--or'是一个红色虚线圆圈标记吗

Line Style	Description	Resulting Line
`“- - -”`	Solid line
`'--'`	Dashed line
`':'`	Dotted line
`'-.'`	Dash-dotted line

Marker	Description	Resulting Marker
`'o'`	Circle
`'+'`	Plus sign
`'*'`	Asterisk
`'.'`	阿宝int
`'x'`	Cross
`'_'`	Horizontal line
`'\|'`	Vertical line
`'s'`	Square
`'d'`	Diamond
`'^'`	Upward-pointing triangle
`'v'`	Downward-pointing triangle
`'>'`	Right-pointing triangle
`'<'`	Left-pointing triangle
`'p'`	Pentagram
`'h'`	Hexagram

Color Name	Short Name	RGB Triplet
`'red'`	`'r'`	`[1 0 0]`
`'green'`	`'g'`	`[0 1 0]`
`'blue'`	`'b'`	`[0 0 1]`
`'cyan'`	`'c'`	`[0 1 1]`
`'magenta'`	`'m'`	`[1 0 1]`
`'yellow'`	`'y'`	`[1 1 0]`
`'black'`	`'k'`	`[0 0 0]`
`'white'`	`'w'`	`[1 1 1]`

Tips

Theplotfunction generates titles and axis labels automatically. These labels are:
- Plot Title —'Time Series Plot: '
  whereis the string assigned tots.Name阿,r by default,'unnamed'
- X-Axis Label —'Time ()'
  whereis the value of thets.TimeInfo.Unitsfield, which defaults to'seconds'
- Y-Axis Label —''
  whereis the string assigned tots.Name阿,r by default,'unnamed'
You can place new time series data on a time series plot (by settinghold on, for example, and issuing anothertimeseries/plotcommand). When you add data to a plot, the title and axis labels become blank strings to avoid labeling confusion. You can add your own labels after plotting using thetitle,xlabel, andylabelcommands.
Time series events, when defined, are marked in the plot with a circular marker with red fill. You can also specify markers for all data points using alinespecor name/value syntax in addition to any event markers your data defines. The event markers plot on top of the markers you define.
The value assigned tots.DataInfo.Interpolation.Namecontrols the type of interpolation theplotmethod uses when plotting and resampling time series data. Invoke thetimeseriesmethodsetinterpmethodto change default linear interpolation to zero-order hold interpolation (staircase). This method creates a newtimeseriesobject, with which you can overwrite the original one if you want. For example, to cause time serieststo use zero-order hold interpolation, type the following:
```
ts = ts.setinterpmethod('zoh');
```

Version History

Introduced before R2006a