在matlab中如何在散点图中无跳跃地连接直线

% 准备数据
x = [1, 2, 3, 4, 6, 7, 9];
y = [3, 6, 4, 5, 8, 7, 9];

% 绘制散点图
scatter(x, y, 'filled');

hold on; % 保持图形

% 对数据进行排序
[x_sorted, idx] = sort(x);
y_sorted = y(idx);

% 计算相邻横坐标之间的差异
diff_x = diff(x_sorted);

% 插值填补空缺
x_interp = [];
y_interp = [];
for i = 1:length(diff_x)
    if diff_x(i) > 1 % 如果差异大于1，则需要插值
        x_interp = [x_interp, linspace(x_sorted(i), x_sorted(i+1), diff_x(i)+1)];
        y_interp = [y_interp, linspace(y_sorted(i), y_sorted(i+1), diff_x(i)+1)];
    else % 如果差异等于1，则无需插值
        x_interp = [x_interp, x_sorted(i)];
        y_interp = [y_interp, y_sorted(i)];
    end
end

% 连接直线
plot(x_interp, y_interp, 'b');

hold off; % 取消保持图形