Set Square root axis scale

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Nuno Fahla
Nuno Fahla 2021-2-5
评论： Star Strider 2021-2-5
How can I set the y axis scale to the square root as this graph here? I tried set(gca, 'yscale', 'lsqrt') but it didnt work!!!
thanks in advance

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Star Strider
Star Strider 2021-2-5
Experiment with this approach to get the result you want:
x = 0:100;
y = rand(size(x))*512;
figure
plot(x, y, '.')
grid
yt = [0 2.^(0:ceil(log2(max(y))))];
set(gca, 'YTick',yt, 'YScale','log')
.
  2 个评论
Nuno Fahla
Nuno Fahla 2021-2-5
its not exactly what I wanted but its pretty good, thank you star strider. Please not in the original graph values go up to 1000, while mine go only to 100.
Star Strider
Star Strider 2021-2-5
As always, my pleasure!
I am not certain how to interpret the rest of your Comment. If you want to limit the y-axis to the next power of 2 that is greater than the maximum value of your data, the nextpow2 function can likely do what you want. (I did not use it in my posted code because I was not certain what the eventual desired result would be.)
Also, experiment with omitting (turning off) the minor ticks and associated minor grid lines, if you do not want them to be displayed:
set(gca, 'YTick',yt, 'YScale','log', 'YMinorTick','off', 'YMinorGrid','off')
You can also set the ylim range (minimum and maximum values) to be what you want.
.

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