如何對齊MATLAB的子圖？

Question

我的MATLAB子圖未完美對齊，請參閱下圖中的綠色矩形。如何避免這種轉變？

這裏是我想

clear all; 
clc; 

RF=RF_data(:,2:end); 

figure 

subplot(3,4,1) 

pos_pre = 1.3:1:3.3; % for positioning 

boxplot(RF(2:71,[45,47,46]),... 
    'colors','b','positions',pos_pre,'width',0.18,... 
    'symbol', 'bd', 'OutlierSize',3); 
set(gca,'XTickLabel',{' '}) 
hold on 

pos_post = 1.55:1:3.55; % Ignore this comment 

boxplot(RF(72:end,[45,47,46]),'colors','r',... 
    'positions',pos_post,'width',0.18,'symbol', 'rd','OutlierSize',3,... 
    'factorseparator',1); 

set(gca,'XTick',1.5:1:3.5) 
set(gca,'XTickLabel',{'10a', '10b', '10c'}, 'FontSize', 7) 

X = get(gca,'XLim'); 
Y = get(gca,'YLim'); 
hold off 

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 

subplot(3,4,2) 

pos_pre = 1.3:1:3.3; % Ignore this comment 

boxplot(RF(2:71,[17,16,15]),... 
    'colors','b','positions',pos_pre,'width',0.18,... 
    'symbol', 'bd', 'OutlierSize',3); 
set(gca,'XTickLabel',{' '}) 
hold on 

pos_post = 1.55:1:3.55; % Ignore this comment 

boxplot(RF(72:end,[17,16,15]),'colors','r',... 
    'positions',pos_post,'width',0.18,'symbol', 'rd','OutlierSize',3,... 
    'factorseparator',1); 

set(gca,'XTick',1.5:1:3.5) 
set(gca,'XTickLabel',{'7a', '7b', '7c'}, 'FontSize', 7) 

hold off 

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 

subplot(3,4,3) 

pos_pre = 1.3:1:3.3; % Ignore this comment 

boxplot(RF(2:71,[54, 53, 52]),'colors','b',... 
    'positions',pos_pre,'width',0.18,... 
    'symbol', 'bd', 'OutlierSize',3); 
set(gca,'XTickLabel',{' '}) 
hold on 

pos_post = 1.55:1:3.55; 

boxplot(RF(72:end,[54, 53, 52]),'colors','r',... 
    'positions',pos_post,'width',0.18,'symbol', 'rd','OutlierSize',3,... 
    'factorseparator',1); 

set(gca,'XTick',1.5:1:3.5) 
set(gca,'XTickLabel',{'6a', '6b', '6c', '6d', '6e', '6f', '6g'}, 'FontSize', 7) 

hold off 

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 

subplot(3,4,4) 

pos_pre = 1.3:1:3.3; 

boxplot(RF(2:71,[76,75,74]),... 
    'colors','b','positions',pos_pre,'width',0.18,... 
    'symbol', 'bd', 'OutlierSize',3); 
set(gca,'XTickLabel',{' '}) 
hold on 

pos_post = 1.55:1:3.55; 

boxplot(RF(72:end,[76,75,74]),'colors','r',... 
    'positions',pos_post,'width',0.18,'symbol', 'rd','OutlierSize',3,... 
    'factorseparator',1); 

set(gca,'XTick',1.5:1:3.5) 
set(gca,'XTickLabel',{'5a', '5b', '5c', '5d', '5e', '5f', '5g', '5h'}, 'FontSize', 7) 

X = get(gca,'XLim'); 
Y = get(gca,'YLim'); 
hold off 

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
subplot(3,4,(5:6)) 

pos_pre = 1.3:1:8.3; 

boxplot(RF(2:71,[32,31,30,50,62,85,86,34]),... 
    'colors','b','positions',pos_pre,'width',0.18,... 
    'symbol', 'bd', 'OutlierSize',3); 
set(gca,'XTickLabel',{' '}) 
hold on 

pos_post = 1.55:1:8.55; 

boxplot(RF(72:end,[32,31,30,50,62,85,86,34]),'colors','r',... 
    'positions',pos_post,'width',0.18,'symbol', 'rd','OutlierSize',3,... 
    'factorseparator',1); 

set(gca,'XTick',1.5:1:8.5) 
set(gca,'XTickLabel',{'5a', '5b', '5c', '5d', '5e', '5f', '5g', '5h'}, 'FontSize', 7) 

hold off 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 

subplot(3,4,(7:8)) 

pos_pre = 1.3:1:7.3; 

boxplot(RF(2:71,[12, 11, 42, 41, 40, 79, 78]),... 
    'colors','b','positions',pos_pre,'width',0.18,... 
    'symbol', 'bd', 'OutlierSize',3); 
set(gca,'XTickLabel',{' '}) 
hold on 

pos_post = 1.55:1:7.55; 

boxplot(RF(72:end,[12, 11, 42, 41, 40, 79, 78]),'colors','r',... 
    'positions',pos_post,'width',0.18,'symbol', 'rd','OutlierSize',3,... 
    'factorseparator',1); 

set(gca,'XTick',1.5:1:7.5) 
set(gca,'XTickLabel',{'6a', '6b', '6c', '6d', '6e', '6f', '6g'}, 'FontSize', 7) 

hold off 

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
subplot(3,4,(9:12)) 

pos_pre = 1.3:1:19.3; 

boxplot(RF(2:71,[1,63,89,88,87,27,80,33,26,28,39,9,21,72,77,19,18,38,5]),... 
    'colors','b','positions',pos_pre,'width',0.18,... 
    'symbol', 'bd', 'OutlierSize',3); 
set(gca,'XTickLabel',{' '}) 
hold on 

pos_post = 1.55:1:19.55; 

boxplot(RF(72:end,[1,63,89,88,87,27,80,33,26,28,39,9,21,72,7,19,18,38,5]),... 
    'colors','r','positions',pos_post,'width',0.18,'symbol', 'rd',... 
    'OutlierSize',3,'factorseparator',1); 

set(gca,'XTick',1.5:1:19.5) 
set(gca,'XTickLabel',{'2a', '2b', '2c', '2d', '2e', '2f', '2g','2e','2f','2g','2h',... 
    '2i','2j','2k','2l','2m','2n','2o','2p','2q','2r','2s'}, 'FontSize', 7) 


X = get(gca,'XLim'); 
Y = get(gca,'YLim'); 
hold off 

text('Position',[0.85*X(1,2), 0.9*Y(1,2)],'String','1901-1970',... 
    'color', 'b', 'FontWeight', 'bold', 'FontSize', 8) 

text('Position',[0.85*X(1,2), 0.8*Y(1,2)],'String','1971-2013',... 
    'color', 'r', 'FontWeight', 'bold', 'FontSize', 8) 

%% 
disp('Done') 

它要求增加一些更詳細，所以我只是寫隨機的東西。

Answer 1

我看不出在這個例子中的一個問題：

% first row 
subplot(3,4,1), plot(cumsum(randn(100,1))) 
subplot(3,4,2), plot(cumsum(randn(100,1))) 
subplot(3,4,3), plot(cumsum(randn(100,1))) 
subplot(3,4,4), plot(cumsum(randn(100,1))) 

% second row 
subplot(3,2,3), plot(cumsum(randn(100,1))) 
subplot(3,2,4), plot(cumsum(randn(100,1))) 

% third row 
subplot(3,1,3), plot(cumsum(randn(100,1))) 

---

編輯：

使用您帶來的代碼，一個快速的解決方法是手動調整軸位置對齊。

首先你需要存儲所有子圖的句柄。所以以下添加到您的腳本：

figure 
h = zeros(1,7); 

h(1) = subplot(3,4,1); 
% ... [snip] ... 

h(2) = subplot(3,4,2); 
% ... [snip] ... 

% ... 

h(7) = subplot(3,4,(9:12)); 
% ... [snip] ... 

然後，你可以做這樣的事情：

% positions of axes on the left 
positions = cell2mat(get(h([1 5 7]), 'Position')); 

% minimum x-position 
x = min(positions(:,1)); 

% set them to be left aligned, and just the width accordingly 
for i=[1 5 7] 
    pos = get(h(i), 'Position'); 
    set(h(i), 'Position',[x, pos(2), pos(3) + (pos(1) - x), pos(4)]); 
end 

下面是結果我得到（我用隨機數據RF_data = rand(100,100);運行腳本）：