1、heatmap
h = heatmap(tbl,xvar,yvar)
官方文档:
https://ww2.mathworks.cn/help/matlab/ref/heatmap.html?s_tid=gn_loc_drop
2、waterfall
figure
[X,Y,Z] = peaks(30);
waterfall(X,Y,Z)
(画波形瀑布图的时候,X-频谱x坐标,Y-系列时间,Z-频谱的y坐标)
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官方文档:
https://ww2.mathworks.cn/help/matlab/ref/waterfall.html
3、peaks 函数
matlab 中的 peaks 函数是一个典型的多元函数。它本质上是一个二元高斯分布的概率密度函数,函数表达式为:
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生成代码:
f=@(x,y)3*(1-x).^2.*exp(-(x.^2) - (y+1).^2)-10*(x/5- x.^3- y.^5).*exp(-x.^2-y.^2)-1/3*exp(-(x+1).^2- y.^2);
ezmesh(f);
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4、findpeaks函数
Find local maxima
官方文档:https://ww2.mathworks.cn/help/signal/ref/findpeaks.html
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参考文献:
【1】https://blog.csdn.net/robert_chen1988/article/details/53070213 matlab中的 peaks 函数的含义
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