【MATLAB基础绘图第8棒】绘制局部放大图

MATLAB绘制局部放大图

1 工具准备

MATLAB官网-ZoomPlot(Kepeng Qiu. Matlab Central, 2022) 初始数据图绘制完成后，调用以下代码：

%% 添加局部放大

zp = BaseZoom();

zp.plot;

1.1 具体绘制步骤

具体绘制步骤如下：

通过鼠标左键框选作图区域；鼠标右键确定后，通过鼠标左键框选需要放大的区域；鼠标右键确定后，完成局部放大图的绘制。

1.2 子坐标系（sub-coordinate system）设置

子坐标系（sub-coordinate system）默认设置：

% theme of inserted axes (sub-axes)

properties

subAxesBox = 'on'

subAxesinsertedLineWidth = 1.2

subAxesTickDirection = 'in'

subAxesBackgroundColor = 'w'

end

例：去除子坐标系并设置线宽为3，具体代码如下：

% theme of inserted axes (sub-axes)

properties

subAxesBox = 'off'

subAxesinsertedLineWidth = 3

subAxesTickDirection = 'in'

subAxesBackgroundColor = 'w'

end

1.3 放大区域（the zoomed zone）设置

放大区域（the zoomed zone）默认设置：

% theme of the zoomed zone (figures)

properties

rectangleColor = 'k'

rectangleFaceColor = 'none'

rectangleFaceAlpha = 0

rectangleLineStyle = '-'

rectangleLineWidth = 1.2

rectangleInteractionsAllowed = 'none'

end

例：设置放大区域线条颜色及线宽为2，具体代码如下：

% theme of the zoomed zone (figures)

properties

rectangleColor = 'r'

rectangleFaceColor = 'none'

rectangleFaceAlpha = 0

rectangleLineStyle = '-'

rectangleLineWidth = 2

rectangleInteractionsAllowed = 'none'

end

1.4 连接线（the connected lines）设置

连接线（the connected lines）默认设置：

% theme of the connected lines (figures)

properties

% setting of lines between arrows

figureConnectedLineStyle = ':'

figureConnectedLineColor = 'k'

figureConnectedLineWidth = 1.2

% setting of start arrow

figureConnectedLineStartHeadStyle = 'ellipse' % shape of start arrow

figureConnectedLineStartHeadLength = 3

figureConnectedLineStartHeadWidth = 3

% setting of end arrow

figureConnectedLineEndHeadStyle = 'cback2' % shape of ending arrow

figureConnectedLineEndHeadLength = 7

figureConnectedLineEndHeadWidth = 7

end

例：设置箭头末端形状及颜色，具体代码如下：

% theme of the connected lines (figures)

properties

% setting of lines between arrows

figureConnectedLineStyle = ':'

figureConnectedLineColor = 'r'

figureConnectedLineWidth = 1.2

% setting of start arrow

figureConnectedLineStartHeadStyle = 'ellipse' % shape of start arrow

figureConnectedLineStartHeadLength = 3

figureConnectedLineStartHeadWidth = 3

% setting of end arrow

figureConnectedLineEndHeadStyle = 'ellipse' % shape of ending arrow

figureConnectedLineEndHeadLength = 7

figureConnectedLineEndHeadWidth = 7

end

2 案例

2.1 案例1：基础图形（设置1个局部放大区）

成图如下： MATLAB代码如下：

clc

clear

close all

%%

addpath(genpath(pwd))

% basic plotting

x = linspace(-0.1*pi,2*pi, 30);

y = cell(1, 3);

y{1, 1} = 0.4*sinc(x)+0.8;

y{1, 2} = tanh(x);

y{1, 3} = exp(-sinc(x));

figure(1);

color_ = [0, 114, 189; 126, 47, 142; 162, 20, 47]/255;

ax = axes('Units', 'normalized');

hold(ax, 'on');

box(ax,'on');

set(ax, 'LineWidth', 1.2, 'TickDir', 'in');

for i = 1:3

plot(x, y{1, i}, 'Parent', ax, 'Color', color_(i, :), 'LineWidth', 3)

end

set(gca,'Layer','top','FontSize',14,'Fontname', 'Times New Roman');

% add a zoomed zone

zp = BaseZoom();

zp.plot;

2.2 案例2：设置2个局部放大区

成图如下： MATLAB代码如下：

clc

clear

close all

%%

addpath(genpath(pwd))

% basic plotting

tmp_ = 5;

t1 = 0:pi/20:8*pi;

t2 = 8*pi:pi/20:16*pi;

y1_ = exp(-t1/tmp_ );

y2_ = exp(-t1/tmp_ ).*sin(tmp_ *t1);

t = [t1, t2];

y1 = [y1_, fliplr(y1_)];

y2 = [y2_, fliplr(y2_)];

figure(1);

plot(t, y2, 'Color', 'r', 'LineStyle', '-', 'LineWidth', 1.5)

hold on

plot(t, y1, 'Color', 'b', 'LineStyle', ':', 'LineWidth', 1.5)

plot(t, -y1, 'Color', 'b', 'LineStyle', ':','LineWidth', 1.5)

xlim([min(t), max(t)])

set(gca,'Layer','top','FontSize',14,'Fontname', 'Times New Roman');

% add 2 zoomed zones

zp = BaseZoom();

zp.plot;

zp.plot;

参考

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