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)propertiessubAxesBox = 'on'subAxesinsertedLineWidth = 1.2subAxesTickDirection = '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)propertiessubAxesBox = 'off'subAxesinsertedLineWidth = 3subAxesTickDirection = '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)propertiesrectangleColor = 'k'rectangleFaceColor = 'none'rectangleFaceAlpha = 0rectangleLineStyle = '-'rectangleLineWidth = 1.2rectangleInteractionsAllowed = '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)propertiesrectangleColor = 'r'rectangleFaceColor = 'none'rectangleFaceAlpha = 0rectangleLineStyle = '-'rectangleLineWidth = 2rectangleInteractionsAllowed = '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 arrowsfigureConnectedLineStyle = ':'figureConnectedLineColor = 'k'figureConnectedLineWidth = 1.2% setting of start arrowfigureConnectedLineStartHeadStyle = 'ellipse' % shape of start arrowfigureConnectedLineStartHeadLength = 3figureConnectedLineStartHeadWidth = 3% setting of end arrowfigureConnectedLineEndHeadStyle = 'cback2' % shape of ending arrowfigureConnectedLineEndHeadLength = 7figureConnectedLineEndHeadWidth = 7end

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 arrowsfigureConnectedLineStyle = ':'figureConnectedLineColor = 'r'figureConnectedLineWidth = 1.2% setting of start arrowfigureConnectedLineStartHeadStyle = 'ellipse' % shape of start arrowfigureConnectedLineStartHeadLength = 3figureConnectedLineStartHeadWidth = 3% setting of end arrowfigureConnectedLineEndHeadStyle = 'ellipse' % shape of ending arrowfigureConnectedLineEndHeadLength = 7figureConnectedLineEndHeadWidth = 7end

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 = 1:3plot(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