Add second y axis for a single data

2022 10 27
1 个回答
回答已采纳
更新时间：2022 10 27
36 次查看（30 天）

0 个投票

I have a problem adding a second y-axis; all solutions point out that I need another data set to have a second y-axis. However, I want to have two y-axis for a single point while the x-axis is the same.
For instance;
point=(3,6), and I want to show that on the right y-axis side, the point (3,6) has a 0.5 value, so the general notation could be as (x,y1,y2)=(3,6,0.5)
first data
For example;
x=[3,5,6,8,11]
y1=[6,7,9,14,17]
I want right y axis to be
y2=[0.5,2,5,7,11]
.

3 个评论
显示 1更早的评论 隐藏 1更早的评论

dpb
dpb 2022-10-27
You can put a single point on the RH axis -- but plot or line won't show anything for a single point -- use scatter instead (or be sure to put a specific marker in the linestyle triplet location if do use plot).
But, it's not at all clear what you actually want here -- what's "point=(3,6), and I want to show that on the right y-axis side, the point (3,6) has a 0.5 value" really mean? The point (3,6) defines an x/y value on the two axes at that location; how can it then have the value of 0.5? And, then, what is the purpose/need of the y2 vector?
This is all very confusing as to actual intent.
Gunay Gazaloglu
Gunay Gazaloglu 2022-10-27
编辑：Gunay Gazaloglu 2022-10-27
You have a single point which has two dimesions (x and y) or (x,y)
x (horizontal axis)
y(vertical axis)
Then (3,6) is a point on that graph
after that I simply ask to have another y axis at the right side and .So your existing point (3,6) will have a value also at the right y axis.
I hope it is more understandable for you now.This is simplest way that ı can explain it...
Torsten
Torsten 2022-10-27
@Gunay Gazaloglu
I think what you need is plot3, not a second y-axis.

请先登录，再进行评论。

请先登录，再回答此问题。

 采纳的回答

Alberto Cuadra Lara
Alberto Cuadra Lara 2022-10-27
Ran in:

0 个投票

Ran in:
Hello Gunay,
Use yyaxis, here is a simple example.
Best,
Alberto
x = [3,5,6,8,11];
y1 = [6,7,9,14,17];
y2 = [0.5,2,5,7,11];
hold on; axis tight
plot(x, y1);
yyaxis right;
plot(x, y2);

3 个评论
显示 1更早的评论 隐藏 1更早的评论

Gunay Gazaloglu
Gunay Gazaloglu 2022-10-27
编辑：Gunay Gazaloglu 2022-10-27
Thank you but this is not what I exactly asked. There should be one line which is blue here and right y axis should be according to that blue line.
For example check the point (5,7) on blue line, corresponding right y axis is around 1.75 but it should be 2.
Alberto Cuadra Lara
Alberto Cuadra Lara 2022-10-27
编辑：Alberto Cuadra Lara 2022-10-27
Ran in:
Ran in:
Hello Gunay,
If you want a line with data that is not proportional to each other, i.e., different scales, you will need to set a piecewise scale distribution. This can be done, for example changing yticks values and yticklabels.
% Data
x = [3,5,6,8,11];
y1 = [6,7,9,14,17];
y2 = [0.5,2,5,7,11];
% Plot configuration
colororder({'k','k'})
hold on; axis tight
% Plot (left)
plot(x, y1);
% Plot (right)
yyaxis right;
plot(x, y1);
% Change yticks (right)
set(gca, 'YTick', y1, 'YTickLabel', y2)

请先登录，再进行评论。

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Axis Labels 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by