how to plot many plots at the same one?

Question

mika 2014-1-13

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/112194-how-to-plot-many-plots-at-the-same-one

回答： Bruno Pop-Stefanov 2014-1-15

采纳的回答： Image Analyst

在 MATLAB Online 中打开

Hello,

I'm tying to show the result (five plots for detected patterns) of the code below in one plot but in vain,

any idea please

help is much appreciated

n = 50 ;

 A = double( rand(n, n+1) > 0.5 ) ;
 B = 2*A - 1 ;
 patterns = {[1 0 1; 0 1 0; 1 0 1]; ... % X
             [1 0 1; 0 1 0; 1 0 0]; ... % Y
             [0 1 0; 1 0 1; 0 1 0]; ... % O
             [0 0 0; 1 1 1; 0 0 0]; ... % -
             [1 0 0; 1 0 0; 1 1 1]} ;   % L
 labels   = {'X', 'Y', 'O', '-', 'L'} ;
 matches  = cell( size(labels )) ;
 for pId = 1 : numel( patterns )
     nel    = numel( patterns{pId} ) ;
     ker    = 2*patterns{pId} - 1 ;    
     [r, c] = find( conv2(B, rot90(rot90(ker)), 'same') == nel ) ;
     matches{pId} = [r, c] ;
     figure(pId) ;  clf ;  hold on ;
     spy(A) ;
     plot( c, r, 'r+', 'MarkerSize', 20 ) ;
     title( sprintf( 'Matches for "%s" pattern', labels{pId} )) ;
     set( gcf, 'Units', 'normalized' ) ;
     set( gcf, 'Position', [0 0 0.4 0.7] ) ;
 end

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Image Analyst 2014-1-13

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/112194-how-to-plot-many-plots-at-the-same-one#answer_120695

编辑：Image Analyst 2014-1-13

在 MATLAB Online 中打开

Try using subplot() and getting rid of the set()s:

n = 50;
A = double( rand(n, n+1) > 0.5 ) ;
B = 2*A - 1 ;
patterns = {[1 0 1; 0 1 0; 1 0 1]; ... % X
  [1 0 1; 0 1 0; 1 0 0]; ... % Y
  [0 1 0; 1 0 1; 0 1 0]; ... % O
  [0 0 0; 1 1 1; 0 0 0]; ... % -
  [1 0 0; 1 0 0; 1 1 1]} ;   % L
labels   = {'X', 'Y', 'O', '-', 'L'} ;
matches  = cell( size(labels )) ;
for pId = 1 : numel( patterns )
  subplot(2,3,pId); % Put plot into this location.
  nel    = numel( patterns{pId} ) ;
  ker    = 2*patterns{pId} - 1 ;
  [r, c] = find( conv2(B, rot90(rot90(ker)), 'same') == nel ) ;
  matches{pId} = [r, c] ;
%   figure(pId) ;  clf ;  
  hold on ;
  spy(A) ;
  plot( c, r, 'r+', 'MarkerSize', 20 ) ;
  title( sprintf( 'Matches for "%s" pattern', labels{pId} )) ;
%   set( gca, 'Units', 'normalized' ) ;
%   set( gca, 'Position', [0 0 0.4 0.7] ) ;
end
% Enlarge figure to full screen.
set(gcf, 'Units', 'Normalized', 'OuterPosition', [0 0 1 1]);

2 个评论
显示无隐藏无

mika 2014-1-15

Thank you for your fast reply,

i'm trying to show the result of the shape recognition of 5 patterns at the same plot wich is only one plot. not the five plot at one using subplot.

any idea

thank you

Image Analyst 2014-1-15

在 MATLAB Online 中打开

Try this:

n = 50;
A = double( rand(n, n+1) > 0.5 ) ;
B = 2*A - 1 ;
patterns = {[1 0 1; 0 1 0; 1 0 1]; ... % X
  [1 0 1; 0 1 0; 1 0 0]; ... % Y
  [0 1 0; 1 0 1; 0 1 0]; ... % O
  [0 0 0; 1 1 1; 0 0 0]; ... % -
  [1 0 0; 1 0 0; 1 1 1]} ;   % L
labels   = {'X', 'Y', 'O', '-', 'L'} ;
for pId = 1 : numel( patterns )
  nel    = numel( patterns{pId} ) ;
  ker    = 2*patterns{pId} - 1 ;
  [r, c] = find( conv2(B, rot90(rot90(ker)), 'same') == nel ) ;
  % Append these r and c to the master list.
  if pId == 1
    % First one
    allR = r;
    allC = c;
  else
    allR = [allR; r(:)];
    allC = [allC; c(:)];
  end
end
plot(allC, allR, 'r+', 'MarkerSize', 20 ) ;
title( sprintf( 'Matches for "%s" pattern', labels{pId} )) ;
% Enlarge figure to full screen.
set(gcf, 'Units', 'Normalized', 'OuterPosition', [0 0 1 1]);

请先登录，再进行评论。

Answer 2

Bruno Pop-Stefanov 2014-1-15

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/112194-how-to-plot-many-plots-at-the-same-one#answer_121027

在 MATLAB Online 中打开

Hi Mika,

If you want to draw all the patterns in the same figure, you should indeed use hold on, however, by calling figure with a different ID number at each iteration of the loop, you create a new figure for each pattern. Also, you use clf which clears everything that was previously plotted on the current figure. Change your code to the following and that should work:

close all
clear all
clc
n = 50 ;
A = double( rand(n, n+1) > 0.5 ) ;
B = 2*A - 1 ;
patterns = {[1 0 1; 0 1 0; 1 0 1]; ... % X
    [1 0 1; 0 1 0; 1 0 0]; ... % Y
    [0 1 0; 1 0 1; 0 1 0]; ... % O
    [0 0 0; 1 1 1; 0 0 0]; ... % -
    [1 0 0; 1 0 0; 1 1 1]} ;   % L
labels   = {'X', 'Y', 'O', '-', 'L'} ;
matches  = cell( size(labels )) ;
for pId = 1 : numel( patterns )
    nel    = numel( patterns{pId} ) ;
    ker    = 2*patterns{pId} - 1 ;
    [r, c] = find( conv2(B, rot90(rot90(ker)), 'same') == nel ) ;
    matches{pId} = [r, c] ;
    figure(1) ;  hold on ;
    spy(A) ;
    plot( c, r, 'r+', 'MarkerSize', 20 ) ;
    title( sprintf( 'Matches for "%s" pattern', labels{pId} )) ;
    set( gcf, 'Units', 'normalized' ) ;
    set( gcf, 'Position', [0 0 0.4 0.7] ) ;
end