matlab 怎么限制对数坐标轴的范围?
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matlab 怎么限制对数坐标轴的范围?
SNR = -4:1:22;
SNRP = power(10,SNR/10);%
P_M2 = qfunc(sqrt(2 * SNRP));
P_M4 = 2 * qfunc(sqrt(2 * SNRP)) .* (1 - qfunc(sqrt(2 * SNRP)) / 2);
semilogy(SNR,P_M2);
grid on;
hold on
semilogy(SNR,P_M4,'g');
![](http://img.wesiedu.com/upload/4/69/469a0bc80cb5329c52e45f72dbf69472.jpg)
怎么把一轴的坐标限制在10^-1到10^-6之间?axis([-4,22,1e-1,1e-6]);用了老是出错!
SNR = -4:1:22;
SNRP = power(10,SNR/10);%
P_M2 = qfunc(sqrt(2 * SNRP));
P_M4 = 2 * qfunc(sqrt(2 * SNRP)) .* (1 - qfunc(sqrt(2 * SNRP)) / 2);
semilogy(SNR,P_M2);
grid on;
hold on
semilogy(SNR,P_M4,'g');
![](http://img.wesiedu.com/upload/4/69/469a0bc80cb5329c52e45f72dbf69472.jpg)
怎么把一轴的坐标限制在10^-1到10^-6之间?axis([-4,22,1e-1,1e-6]);用了老是出错!
![matlab 怎么限制对数坐标轴的范围?](/uploads/image/z/5199713-17-3.jpg?t=matlab+%E6%80%8E%E4%B9%88%E9%99%90%E5%88%B6%E5%AF%B9%E6%95%B0%E5%9D%90%E6%A0%87%E8%BD%B4%E7%9A%84%E8%8C%83%E5%9B%B4%3F)
从小到大排列,顺序搞错了
axis([-4,22,1e-6,1e-1])
axis([-4,22,1e-6,1e-1])