plot

Linear 2-D plot.

Syntax

  • plot(Y)

  • plot(X1, Y1, ...)

  • plot(X1, Y1, LineSpec, ...)

  • plot(..., propertyName, propertyValue, ...)

  • plot(ax, ...)

  • go = plot(...)

Input argument

  • X1 - x-coordinates: vector or matrix.

  • Y1 - y-coordinates: vector or matrix.

  • LineSpec - Line style, marker, and/or color: character vector or scalar string.

  • ax - a scalar graphics object value: parent container, specified as a axes.

  • propertyName - a scalar string or row vector character. see help of 'line' for property list.

  • propertyValue - a value.

Output argument

  • go - a graphics object: line type.

Description

plot(Y) plots the columns of Y versus their index.

plot(X, Y) plots line defined by X versus Y pair.

go = plot(...) returns a column vector of line graphics objects.

LineSpec is a string used to change the characteristics of the line and is composed of three optional parts in any order:

The SymbolSpec specifies the symbol to be drawn at each data point:

'o': Circle symbol

'x': Times symbol

'+': Plus symbol

'*': Asterisk symbol

'.': Dot symbol

's': Square symbol

'd': Diamond symbol

'v': Downward-pointing triangle symbol

'^': Upward-pointing triangle symbol

'>': Left-pointing triangle symbol

'<': Right-pointing triangle symbol

The LineStyleSpec specifies the line style to use for each data series:

'-': Solid line style

'--': Dashed line style

'-.': Dot-Dash-Dot-Dash line style

':': Dotted line style

The ColorSpec specifies the line color to use for each data series:

'k': Color Black

'y': Color Yellow

'm': Color Magenta

'c': Color Cyan

'r': Color Red

'b': Color Blue

'g': Color Green

see line for more information about properties

Examples

Default abscissae using indices:

f = figure()
plot(sin(0:0.1:2*pi))

Using explicit abscissae:

f = figure()
x = [0:0.1:2*pi]';
plot(x, sin(x))

Multiple curves with shared abscissae:

f = figure()
x = [0:0.1:2*pi]';
plot(x, [cos(x), cos(2*x), cos(3*x)])

Color and Size of Markers:

f = figure();
x = -pi:pi/10:pi;
y = tan(sin(x)) - sin(tan(x));
plot(x ,y, '--rs','LineWidth', 2, 'MarkerEdgeColor','k', 'MarkerFaceColor','g', 'MarkerSize', 11)

Adding Title and Axis Labels:

f = figure();
x = linspace(0, 10, 150);
y = sin(5*x);
plot(x,y,'Color',[0,0.7,0.9])
title(_('2-D Line Plot'))
xlabel('x')
ylabel('sin(5x)')

See also

line, plot3.

History

Author

Allan CORNET

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