realtime plot, y axes overlapping

Question

Vincent I 2012-6-28

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/42316-realtime-plot-y-axes-overlapping

Hi,

the first time when the plot/s is created is fine. When i change the y values and axes start to overlap. I've tried everything but i'm unable to clear the old axes.what do i have to do to make the code down below look nice and pretty? Thank you

function addaxis(hObject, eventdata, handles,varargin)
%ADDAXIS  adds an axis to the current plot
handles.output = hObject;
guidata(hObject, handles);...
    %  get current axis
axes(handles.Axes1)
set(gca,'Units','pixels');
cah=gca;
axesPosition = get(cah,'position');  %# y axes spacing, in pixels
yWidth = 30;  %# Range of x values 
x=evalin('base','t');
xLimit = [min(x) max(x)]; 
xOffset = -yWidth*diff(xLimit)/axesPosition(3); 
%# Create the axes: 
handles.Axes1 = axes('Units','pixels','Position',axesPosition,... 
      'Color','w','XColor','k','YColor','r','ylim',[-inf inf],...
      'XTick',[],'XLim',xLimit,'NextPlot','add');
handles.Axes1 = axes('Units','pixels','Position',axesPosition+yWidth.*[-1 0 1 0],...
          'Color','none','XColor','k','YColor','m',...
          'XLim',xLimit+[xOffset 0],'YLim',[-inf inf],...
          'XTick',[],'XTickLabel',[],'NextPlot','add');
handles.Axes1 = axes('Units','pixels','Position',axesPosition+yWidth.*[-2 0 2 0],...
      'Color','none','XColor','k','YColor','b',...
      'XLim',xLimit+[2*xOffset 0],'YLim',[-inf inf],...
      'XTick',[],'XTickLabel',[],'NextPlot','add'); 
%# Plot the data: 
plot(handles.Axes1,evalin('base','t'),evalin('base','y1'),'r'); 
plot(handles.Axes1,evalin('base','t'),evalin('base','y2'),'m'); 
plot(handles.Axes1,evalin('base','t'),evalin('base','y3'),'b');