它使用X的线性刻度和y的对数标度生成x和y值的图。
semilogy(Y) // It generates a plot using a base 10 logarithmic scales for the y-axis and linear scales for the x-axis. It plots the column of Y versus their index. semilogy(X1,Y1,...)// It plots all Yn versus Xn pairs. semilogy(X1,Y1,LineSpec,...)// It plots all the lines described by the Xn,Yn,LineSpec triples. LineSpec determine line style, marker symbol, and color of the plotted lines. semilogy(...,'PropertyName',PropertyValue,...)// It sets property values for all the charting lines created by semilogy. semilogy(ax,...)// It generates the line in the axes specified by ax instead of in the current axes (gca). The option ax precedes any of the input argument combinations in the previous syntaxes. h = semilogy(...)// It returns a vector of chart line objects.
为y轴的对数刻度创建一个绘图,x轴的线性刻度。
x=t,y=e^t,0≤t≤2π t=linspace (0, 2*pi,200); semilogy(t, exp(t)) grid
输出: strong>
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