四舍五入到最接近的十分之一

Question

如果 cx_n 值与 yt 不匹配，我将尝试将 cx_n 向上舍入到最接近的数字。使用下面的代码，我可以四舍五入，但它一直到 1。例如， cx_n 值之一是 0.58，我想四舍五入 0.6，而不是 1.0。我怎样才能做到这一点？

这是我的 MATLAB 代码：

Fn = 3; %Nyquist Frequency
Fnr = 6; %Nyquist Rate
Fs = Fnr*5; %Sampling frequency
Ts = 1 / Fs; %Sampling period
T = 1 / 3; 
N = T / Ts; %Number of samples per period
start = 0;
stop =N-1;
c_increment = 1;
c_n = start:c_increment:stop;
c_nTs = c_n*Ts;
cx_n = sin(2*pi*3*c_nTs);
for m_d = 1:length(cx_n)
    for quantisation = 1:length(yt)
        if (m_d ~= quantisation )
            p = round(cx_n);
            stem(c_nTs, p);
        end
        
    end
end

Answer 1

只需将 p = round(cx_n); 替换为 p = round(cx_n,1);

参见 MATLAB 文档：round

Y = round(X,N) rounds to N digits:

N > 0: round to N digits to the right of the decimal point.

N = 0: round to the nearest integer.

N < 0: round to N digits to the left of the decimal point.

四舍五入到最接近的十分之一

Rounding up to the nearest tenth

floating-point

matlab

rounding