Y axis has limt e-20 to e-4 when I plot this y axis is multiply by e-4 and values like e-18,e-17 .. are showed near to x axis I want that y axis start from e-20 and have increasing step of e1 end at e-4 answer it plz

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NILESH PANDEY 2015-10-25

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https://ww2.mathworks.cn/matlabcentral/answers/250893-y-axis-has-limt-e-20-to-e-4-when-i-plot-this-y-axis-is-multiply-by-e-4-and-values-like-e-18-e-17

评论： Star Strider 2015-10-25

采纳的回答： Star Strider

i want y axis have e-20 e-19 e-18 e-17.... like value

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Answer 1

Star Strider 2015-10-25

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https://ww2.mathworks.cn/matlabcentral/answers/250893-y-axis-has-limt-e-20-to-e-4-when-i-plot-this-y-axis-is-multiply-by-e-4-and-values-like-e-18-e-17#answer_197263

在 MATLAB Online 中打开

You have to specify the 'YTick' values specifically:

The code:

x = linspace(0, 5);                             % Create Data
y = 10.^(randi([-20 -4], 1, 100));              % Create Data
figure(1)
semilogy(x, y)
grid
yts = 10.^round(-20:-4);                        % Generate Desired Y-Tick Values
set(gca, 'YTick',yts)                           % Set Y-Tick Values
axis tight