MATLAB中的多个y轴(打印时出现轴对齐问题) [英] Multiple y axes in MATLAB (axis alignment issue when printing)

问题描述

这里是一个奇怪问题的样本.我想绘制带有多个y轴的曲线，并且在MATLAB中使用了一种相当普遍的方法.

Here is a sample of a strange problem. I'd like to plot curves with multiple y axes and I use a fairly common method in MATLAB.

function plot_test()

clear; 
savefile = 1;

scrsz = get(0,'ScreenSize');
figure('Position',[1 1 0.9 * scrsz(3) 0.9 * scrsz(4)]);

hold on;
box on;

x = 0:1:10;

h1 = plot(x, x.^2 , 'r', 'LineWidth', 2.5);

%Axis label
xlabel('XLabel', 'FontSize', 20, 'Interpreter', 'latex');
ylabel('YLabel', 'FontSize', 20, 'Interpreter', 'latex');
set(gca, 'FontSize', 20, 'LineWidth', 3);

ax1 = gca;
ax2 = axes('Position',get(ax1,'Position'),'XAxisLocation','top','YAxisLocation','right','Color','none','XColor','none','YColor','k');
linkaxes([ax1 ax2],'x');
hold on
box on;
h2 = plot(x, x, 'b', 'Parent', ax2, 'LineWidth', 2.5);
ylabel('Second YLabel', 'FontSize', 20, 'Interpreter', 'latex');
set(gca, 'FontSize', 20, 'LineWidth', 3);

hl=legend([h1 h2],{'First Line','Second Line'});
set(hl,'FontSize',15,'Location','Northwest', 'Orientation','Vertical')


%Save pdf
if savefile
    % Backup previous settings
    prePaperType = get(gcf,'PaperType');
    prePaperUnits = get(gcf,'PaperUnits');
    preUnits = get(gcf,'Units');
    prePaperPosition = get(gcf,'PaperPosition');
    prePaperSize = get(gcf,'PaperSize');

    % Make changing paper type possible
    set(gcf,'PaperType','<custom>');

    % Set units to all be the same
    set(gcf,'PaperUnits','inches');
    set(gcf,'Units','inches');


    % Save the pdf
    print -dpdf Test.pdf;

    % Restore the previous settings
    set(gcf,'PaperType',prePaperType);
    set(gcf,'PaperUnits',prePaperUnits);
    set(gcf,'Units',preUnits);
    set(gcf,'PaperPosition',prePaperPosition);
    set(gcf,'PaperSize',prePaperSize);    
end

目标是打印图形的PDF并将其保存在与Test.pdf相同的文件夹中.完成此操作，但轴未对齐.在我的Windows机器上，它看起来很可怕，而在Mac上，它看起来几乎还可以(但是如果仔细观察，y轴的底部确实未对齐).

The objective is to print a PDF of the figure and save it in the same folder as Test.pdf. This is accomplished but the axes are misaligned. On my Windows machine it looks horrible while on a Mac it looks almost okay (but if you look closely, the y-axes are indeed misaligned at the bottom).

这仅在我使用第二个轴时发生.没有这些，所有这些都将完美运行.知道为什么吗?

This only happens when I use a second axis. Without that, all this runs perfectly. Any idea why?

推荐答案

好的，所以我找到了一种方法:诀窍是使用plotyy.下面的示例代码

Okay, so I found a way: The trick is to use plotyy. Sample code below

function plot_test2()

clear; 
savefile = 1;

scrsz = get(0,'ScreenSize');
figure('Position',[1 1 0.9 * scrsz(3) 0.9 * scrsz(4)]);

hold on;
box on;

x=(0:1:10);
y1=x;
y2=x.^2;
[hAx, hLine1, hLine2] = plotyy(x,y1,x,y2);


%Axis label
xlabel(hAx(1),'XLabel', 'FontSize', 20, 'Interpreter', 'latex', 'Color', 'k');
ylabel(hAx(1),'YLabel', 'FontSize', 20, 'Interpreter', 'latex', 'Color', 'k');
ylabel(hAx(2),'Second YLabel', 'FontSize', 20, 'Interpreter', 'latex');

set(hAx,{'ycolor'},{'k';'k'})
set(hAx,{'FontSize'},{20;20}, {'LineWidth'}, {3;3})
set(hLine1,'LineWidth', 3)
set(hLine2,'LineWidth', 3)
set(hLine1,'Color', 'r')
set(hLine2,'Color', 'b')

hl=legend([hLine1 hLine2],{'First Line','Second Line'});
set(hl,'FontSize',15,'Location','Northwest', 'Orientation','Vertical')


%Save pdf
if savefile
    % Backup previous settings
    prePaperType = get(gcf,'PaperType');
    prePaperUnits = get(gcf,'PaperUnits');
    preUnits = get(gcf,'Units');
    prePaperPosition = get(gcf,'PaperPosition');
    prePaperSize = get(gcf,'PaperSize');

    % Make changing paper type possible
    set(gcf,'PaperType','<custom>');

    % Set units to all be the same
    set(gcf,'PaperUnits','inches');
    set(gcf,'Units','inches');

    % Save the pdf
    print -dpdf Test.pdf;

    % Restore the previous settings
    set(gcf,'PaperType',prePaperType);
    set(gcf,'PaperUnits',prePaperUnits);
    set(gcf,'Units',preUnits);
    set(gcf,'PaperPosition',prePaperPosition);
    set(gcf,'PaperSize',prePaperSize);    
end

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