diff --git a/content/data_sci/visualization/sci_graphics/waterfall.md b/content/data_sci/visualization/sci_graphics/waterfall.md
index 5b706ed58..9db28873c 100644
--- a/content/data_sci/visualization/sci_graphics/waterfall.md
+++ b/content/data_sci/visualization/sci_graphics/waterfall.md
@@ -21,73 +21,50 @@ date: 2024-05-07
 clear all;clc;close all;
 
 set(0, 'DefaultAxesFontSize', 16); % 设置坐标轴标签的字体大小
-
 set(0, 'DefaultTextFontSize', 16); % 设置文本框的字体大小
 
 % 假设你已经有了一个信号，这里我们创建一个示例信号
-
 t = 0:0.01:10; % 时间向量
-
 signal = cos(2*pi*t) + 0.5*cos(4*pi*t) + rand(1, length(t)) * 0.1; % 示例信号
 
 % 使用EMD进行分解
-
 [IMFs, residuals] = emd(signal);
 
 % waterfall plot the IMFs
 
+
 figure('Position', [0 0 1500 900]);
 
 plot3(zeros(length(IMFs), 1), t, signal, 'LineWidth', 1.5, 'DisplayName', 'Signal');
-
 hold on;
 
 for i = 1:size(IMFs, 2)
-
-plot3(ones(length(IMFs), 1) * i, t, IMFs(:, i), 'LineWidth', 1.5, 'DisplayName', ['IMF ' num2str(i)]);
-
-hold on;
-
+    plot3(ones(length(IMFs), 1) * i, t, IMFs(:, i), 'LineWidth', 1.5, 'DisplayName', ['IMF ' num2str(i)]);
+    hold on;
 end
 
 % plot the residuals
-
 plot3(ones(length(IMFs), 1) * (size(IMFs, 2) + 1), t, residuals, 'LineWidth', 1.5, 'DisplayName', 'Residuals');
-
 hold off;
 
 xStringLables = cell(1, size(IMFs, 2) + 2);
-
 xStringLables{1} = 'Signal';
-
 for i = 1:size(IMFs, 2)
-
-xStringLables{i + 1} = ['IMF ' num2str(i)];
-
+    xStringLables{i + 1} = ['IMF ' num2str(i)];
 end
-
 xStringLables{size(IMFs, 2) + 2} = 'Residuals';
 
 % 设置图例
-
 legend('show');
-
 xlabel('IMF Index');
-
 ylabel('Time');
-
 zlabel('Amplitude');
-
 title('EMD Decomposition of Signal');
-
 xticks(0:size(IMFs, 2) + 1);
-
 xticklabels(xStringLables);
-
 grid on;
 
 % 保存图像
-
 saveas(gcf, 'EMD_Decomposition.png');
 ```