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How to plot semilog y graphic in Matlab?

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nancy
nancy 2016-10-12
评论： nancy 2016-10-12
Hi;
I have a .txt file with two columns.. Second column is between 180.2E+03 and 11.5. I want to plot second column as a semilog(y) axis. I want the first column to stay in linear X axis. Could you please help me? How can I do this?
You can find file in the attached .txt file.
Thank you..

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Massimo Zanetti
Massimo Zanetti 2016-10-12
编辑：Massimo Zanetti 2016-10-12
The matlab function semilogy() is what you need:
https://it.mathworks.com/help/matlab/ref/semilogy.html?searchHighlight=semilogy
A=textread('test_1.txt');
semilogy(A(:,1),A(:,2));
grid on;

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