how to set y-axis as log scale?

7,236 ビュー (過去 30 日間)
Rohit Bhoi
Rohit Bhoi 2016 年 4 月 15 日
編集済み: MathWorks Support Team 2023 年 9 月 22 日
I am plotting x-y plot using plot function. I want to set only y-axis as log scale and x-axis as linear? How to do that? I used loglog function but it scales both axis but I want only Y.

採用された回答

Walter Roberson
Walter Roberson 2023 年 9 月 22 日
編集済み: MathWorks Support Team 2023 年 9 月 22 日
The best way to create that type of axes is to use the semilogy function. Alternatively, you can set the ‘YScale’ property on the axes:
set(gca, 'YScale', 'log')
***Update from Mathworks Support Team - September 2023***
As of R2023b, you can also use the 'yscale ' function. 
  18 件のコメント
Weirong Sun
Weirong Sun 2022 年 5 月 9 日
good answer! It's very helpful!!!
mingyang zhao
mingyang zhao 2023 年 8 月 2 日
Great answer! Thank you!

サインインしてコメントする。

その他の回答 (2 件)

Rohit Sinha
Rohit Sinha 2022 年 4 月 27 日
The easiest way to do this is simply use the following command instead of plot
semilogy(x,y);
This will plot x axis on a linear scale and y axis on a log scale. Similarly, if you want to plot x axis on log scale and y axis on a linear scale, you can use
semilogx(x,y) ;
  2 件のコメント
Walter Roberson
Walter Roberson 2022 年 4 月 27 日
semilogy() is the first thing I mentioned in my answer in 2016.
Nicholas Santiago
Nicholas Santiago 2022 年 11 月 4 日
yo i totally missed that I generally only read the bold stuff, thanks a ton!

サインインしてコメントする。


Toshia M
Toshia M 2023 年 9 月 20 日
Starting in R2023b, you can change the scale of any axis after you create the plot by calling the xscale, yscale, or zscale function.
For example, create a plot of two vectors x and y. Then set the scale of the y-axis to logarithmic.
x = 1:100;
y = x.^2;
plot(x,y)
grid on
yscale log

カテゴリ

Help Center および File ExchangeAxis Labels についてさらに検索

タグ

タグが未入力です。

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by