我必须绘制一些数据，我需要两个x和y轴。 主x和y给我位移信息，次要（x在顶部，y在右边）给我信息的能量。 我的问题是，如果我使绘图窗口更大，辅助轴不能正确调整大小，但它非常小，绘图标题写在工具栏下面，我只能看到字母的下半部分。 有人知道如何解决辅助轴上的主要问题吗？
我用于辅助轴的代码是：
figure(1)
%%%%voglio fare un plot tenendo fisse le dimensioni delle icone nella legenda
hplot = plot(yH(1,:),xH(1,:),'^', yC(:,1),xC(:,1),'*',yC(:,2),xC(:,2),'*',...
yC(:,3),xC(:,3),'*',yC(:,4),xC(:,4),'*',yC(:,5),xC(:,5),'*',...
yC(:,6),xC(:,6),'*','MarkerSize',s); % Markersize: specifys the size of the marker in points (s in questo caso)
hold on
plot(Ymcporigine,Xmcporigine,'k-','MarkerEdgeColor','k','MarkerSize',1); %Plot contorno MCP
hold on
plot(Yh, Xh, 'b-', 'MarkerSize', s); %Plot alone circolare
hold off
%Labe assi principali - It is necessary to give the label instructions after plot in order to avoid overlap
xlabel(gca, 'Deflessione magnetica [m]'); % label lower x axis
ylabel(gca,'Deflessione elettrica [m]'); %label left y axis
%particles outside MCP radius won't be appear in figure
xlim([0, Rmcp])
ylim([0, Rmcp])
%%%% legenda assi principali
l=legend(hplot, 'H^+','C^+','C^{+2}','C^{+3}','C^{+4}','C^{+5}','C^{+6}', 'Location','BestOutside');
a=get(l,'children');
set(a(1:3:end),'MarkerSize',10);
%%%% doppio Asse x
%xlabel(gca, 'Deflessione magnetica [m]'); % label asse x principale
%set secondary x limit as the momentum of a H+ at distance equal to the MCP radius
% Secondo Harres y=(q*B*LB*L)/sqrt(2mEkin) ==> mv=q*B*LB*L/y
mv_max = (q*B*LB*L)/Rmcp;
%mv_max = 1;
%Layout instruction
set(gca,'Box','off'); % Turn off the box surrounding the whole axes
axesUnits=get(gca,'Units');
axesPosition = get(gca,'Position'); %# Get the current axes position
hNewAxes = axes('Position',axesPosition,... %# Place a new axes on top...
'Units', axesUnits,...
'ActivePositionProperty', 'OuterPosition',...
'Color','none',... %# ... with no background color
'XAxisLocation','top',... %# ... located on the top
'Ytick', [],... %# ... with no y tick marks
'Xlim', [0, mv_max],... %# ... should define x axis scale (need to set xmax = mv_max)
'Box','off'); %# ... and no surrounding box
xlabel(hNewAxes,'Momentum (H^+)'); %# Add a label to the top axis
set(gca, 'XTickLabel', num2str(get(gca,'XTick')','%g'))
%%%%%Plot title - It is necessary to give the title instruction after secondary x axis in order to avoid overlap
title(['Calcolo approssimato interazione ioni campo magnetico B=', num2str(B), 'Tesla']);
%%%% doppio Asse y
%ylabel(gca,'Deflessione elettrica [m]'); %label asse y principale
%set secondary y limit as the energy of a H+ at distance equal to the MCP radius
% Secondo Harres x=(q*E*Le*L)/(2mEkin) ==> Ekin=q*E*Le*L/2mx
Le = 0.07; %Estensione del C.E. : 70 mm
E = 100000; %campo TP.m
Ekin_max = (q*E*Le*L)/(2*m_H*Rmcp);
%mv_max = 1;
set(gca,'Box','off'); % Turn off the box surrounding the whole axes
axesUnits = get(gca,'Units');
axesPosition = get(gca,'Position'); %# Get the current axes position
hNewAxes = axes('Position',axesPosition,... %# Place a new axes on top...
'Units', 'normalized',...
'ActivePositionProperty', 'OuterPosition',...
'Color','none',... %# ... with no background color
'YAxisLocation','right',... %# ... located on the right
'Ylim', [0, Ekin_max],... %# ... should define y axis scale (need to set ymax=Ekin_max)
'Xtick', [],... %# ... with no y tick marks
'Box','off'); %# ... and no surrounding box
ylabel(hNewAxes,'Energy (H^+)'); %# Add a label to the top axis
set(gca, 'YTickLabel', num2str(get(gca,'YTick')','%g'))
答案 0 :(得分：1)
我记得在Matlab文档中看到了这个walkthrough on how to set up multiple axes。我尝试了他们的示例代码，一切都很好。
如果您的代码与Matlab文档不同，您需要同时定义x轴和y轴，而不是在两个不同的新轴语句中。因此，请取出两个hNewAxes语句，并将其替换为包含所有属性的语句：
hNewAxes = axes('Position',axesPosition,... %# Place a new axes on top...
'Units', 'normalized',...
'ActivePositionProperty', 'OuterPosition',...
'Color','none',... %# ... with no background color
'YAxisLocation','right',... %# ... located on the right
'XAxisLocation','top',...
'Xlim', [0, mv_max],...
'Ylim', [0, Ekin_max],... %# ... should define y axis scale (need to set ymax=Ekin_max)
'Box','off'); %# ... and no surrounding box
如果你想要绘制一些关于一组轴的数据线，而另一些关于第二组的数据线，那么对于第二组，你必须以最后一个布局的方式绘制它们。演练：
hl2 = line(x2,y2,'Color','k','Parent',ax2);
其中'Parent'属性告诉Matlab要使用哪些轴。
答案 1 :(得分：0)
在Matlab文档中，您似乎应该将ActivePositionProperty设置为OuterPosition而不是Position。我无法重现缩放问题，但设置似乎确实调整了标题位置。