X-label additional text automatically.
显示 更早的评论
Dear all,
I need help about Figures in Matlab. Is it posible to put on x-label two separate texts, for intance one in middle and one od the right edge of figure, but automaticly without command 'text'. For example like in the fig below (I marked it with the red circle):
If I use command xlabel for Frequency then I need to use comand text for (a) and in command tect I need to put cordinates and I do not want to do that for every figure. I need automatical way.
4 个评论
dpb
2020-12-11
What's keeping you from just adding the call to text() in the script/function that does the rest of the plot?
Djordje Damnjanovic
2020-12-11
" I need to do 30 different positioning of text, ..."
Why is it any different? Looks like the axes would be the same or at least very similar.
You have the x values in order to be able to plot the data, code them in, too...text() uses the axes coordinates for location; at worst you have to work out the y coordinate once to align it vertically where desired.
Djordje Damnjanovic
2020-12-11
采纳的回答
Star Strider
2020-12-11
Try something like this:
x = 1:10;
y = randn(1,10);
figure
plot(x,y)
xlabel('Frequency [Hz]')
text(max(xlim), min(ylim)-diff(ylim)*0.1, '(a)', 'HorizontalAlignment','right', 'VerticalAlignment','middle')
It seems to work correctly in my simulations, and appears to produce constant relative positioning of ‘(a)’.
6 个评论
Djordje Damnjanovic
2020-12-11
Star Strider
2020-12-11
What is the problem with the y-value? It always gives appropriate results in my simulations, even when I change ‘y’ to:
y = randn(1,10)*10 + 10;
that appears to approximate the y-axis range in the image you posted.
What are typical values in your data for ylim?
Note that I set the constant multiplier at 0.1 in my example code. This positions the text results with respect to the y-axis. You may need to vary that for my text call to work correctly with your data, depending on where you want the ‘(a)’ to appear, with smaller values moving it up (closer to the x-axis), and larger values moving it down (farther from the x-axis). I assumed that you want it at the same y-axis offset as the xlabel string, and my code puts it there. (I am using R2020b, Update 3.)
Djordje Damnjanovic
2020-12-11
Ok, example of code:
clear all;
close all;
N = 1000;
t = 0:0.001:1;
x = 1.5*sin(4*pi*t);
%x = x - sign(t-0.3) - sign(0.72-t);
sig = x + 0.2*randn(size(t));
lev = 5;
wname = 'db2';
dnsig1 = wden(sig,'minimaxi','h','mln',lev,wname);
figure(1)
set(gcf, 'Units', 'centimeters');
set(gcf,'Position',[20 2 16 4])
subplot(131)
plot(t,x,'LineWidth',1)
ylim([-2 2])
xlim([0 1])
%grid on
xlabel('{\it t} [s]','FontName','times','FontSize',8)
ylabel('{\it A} [rel. units]','FontName','times','FontSize',8)
text(max(xlim), min(ylim)-diff(ylim)*0.1, '(a)', 'HorizontalAlignment','right', 'VerticalAlignment','middle','FontName','times','FontSize',8)
set(gca,'xtick',[0 0.2 0.4 0.6 0.8 1],'FontName','times','FontSize',8)
set(gca,'ytick',[-2 -1 0 1 2],'FontName','times','FontSize',8)
set(gca, 'Units', 'centimeters');
set(gca,'Position',[0.9 0.9 4 2.9])
I bold a part You send me. It gives me (a) on good position on right but not in line with xlabel. Picture:
Star Strider
2020-12-11
You need to change the multiplier:
text(max(xlim), min(ylim)-diff(ylim)*0.20, '(a)', 'HorizontalAlignment','right', 'VerticalAlignment','middle','FontName','times','FontSize',8)
↑ ← THIS VALUE
Changing it to 0.2 appears to position it correctly in your code.
Changing the code slightly:
posmult = 0.2; % Position Multiplier
text(max(xlim), min(ylim)-diff(ylim)*posmult, '(a)', 'HorizontalAlignment','right', 'VerticalAlignment','middle','FontName','times','FontSize',8)
This may be a more straightforward way of specifying the value. Increase the value of ‘posmult’ to move the text ‘(a)’ down (away from the x-axis) and decrease it to move it up (toward the x-axis).
Djordje Damnjanovic
2020-12-11
Star Strider
2020-12-11
As always, my pleasure!
更多回答（1 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Labels and Annotations 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
