在matlab中通過循環在一個圖中繪製多個圖

Question

我想繪製正態分佈圖，但通過循環繪製同一圖中的多個繪圖。對於第一次迭代，其精確的3個繪圖在一個圖中，但在其他3個圖中繪製只有一個繪圖。這裏是代碼

load iris.dat; 
iris; 
number_of_features = 4; 
classes = iris(:,5); 
number_of_classes = length(unique(classes)); 

for class_number = 1:number_of_classes 
likelihood{class_number} = struct; 

for feature_number = 1:number_of_features 
    likelihood{class_number}.pd{feature_number} = fitdist(iris(find(iris(:, 5) == class_number),feature_number),'Normal'); 
end 
end 
hold all 
for feature_number = 1:number_of_features 
for class_number=1:number_of_classes 
    ppd=iris(find(iris(:, 5) == class_number),feature_number); 
    y=normpdf(ppd,likelihood{class_number}.pd{feature_number}.mu,likelihood{class_number}.pd{feature_number}.sigma); 
    figure(feature_number) 
    stem(ppd,y) 
end 
end 

請，如果任何人可以檢查，並告訴什麼在代碼

Answer 1

這個問題我不知道，但下面的代碼可能會工作。我剛剛改變了你的命令的地方。

load iris.dat; 
iris; 
number_of_features = 4; 
classes = iris(:,5); 
number_of_classes = length(unique(classes)); 

for class_number = 1:number_of_classes 
likelihood{class_number} = struct; 

for feature_number = 1:number_of_features 
    likelihood{class_number}.pd{feature_number} = fitdist(iris(find(iris(:, 5) == class_number),feature_number),'Normal'); 
end 
end 

for feature_number = 1:number_of_features 
figure(feature_number) 
hold on 
for class_number=1:number_of_classes 
    ppd=iris(find(iris(:, 5) == class_number),feature_number); 
    y=normpdf(ppd,likelihood{class_number}.pd{feature_number}.mu,likelihood{class_number}.pd{feature_number}.sigma); 
    stem(ppd,y) 
end 
hold off 
end