在Matlab中为对数图选择其他基准 [英] Select a different base for a logarithmic plot in matlab

问题描述

我想让x轴对数为2:从2 ^ 10到2 ^ 25，并且每一步的指数都应增加1，而y轴应该是线性的.

I want to have the x-axis logarithmic to the base 2: From 2^10 to 2^25 and at each step the exponent should increase by one, while the y-axis should be linear.

这怎么可能?我已经想通了

How is this possible? I already figured out

set(gca,'XScale','log')

但是你不能设置基础.

推荐答案

请考虑以下示例:

%# some random data
x = 2.^(0:10);
y = rand(size(x));

plot(log2(x), y)                               %# plot on log2 x-scale
set(gca, 'XTickLabel',[])                      %# suppress current x-labels

xt = get(gca, 'XTick');
yl = get(gca, 'YLim');
str = cellstr( num2str(xt(:),'2^{%d}') );      %# format x-ticks as 2^{xx}
hTxt = text(xt, yl(ones(size(xt))), str, ...   %# create text at same locations
    'Interpreter','tex', ...                   %# specify tex interpreter
    'VerticalAlignment','top', ...             %# v-align to be underneath
    'HorizontalAlignment','center');           %# h-aligh to be centered

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