它使用x和y轴的对数刻度生成向量x和y的图。
句法
loglog(Y)// It should plot the columns of Y versus their index if Y includes real numbers. If Y includes complex numbers, loglog(Y) and loglog(real(Y), imag(Y)) are equivalent.
loglog(X1, Y1, ...)// It plots all Yn versus Xn pairs.
loglog(X1, Y1, LineSpec, ...)// It plots all the lines described by the Xn, Yn, LineSpec triples, where LineSpec determine line type, marker symbol, and color of the plotted lines.
loglog(..., 'PropertyName', PropertyValue, ...)// It sets line property values for all the charting lines created.
loglog(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 = loglog(...)// It returns a column vector of chart line objects.
例子
使用对数刻度的x轴和y轴创建图。
x=e^t, y=100+e^2t, 0≤t≤2π
t=linspace(0, 2*pi, 200);
x=exp(t)
y=100+exp(2*t);
loglog(x, y), grid
输出
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