How can I make the vertical axes of two plots equal?
For example:
a = [1 2 3; 21 1 3; 4 2 3; 4 5 6]
After plotting plot(a(1, :)) I get the following figure:
I have done some simple operations:
[U E V] = svd(a);
figure(2);
plot(U(1,:))
And get another figure:
How do I make the y-axis limits of both plots equal? Is it with the axes equal command?
UPDATE:
I've used the following commands:
figure (1)
ylim([0 3])
plot(a(1,:))
figure (2);
ylim([0 3])
plot(U(1,:))
But get the same result...
You can use ylim to force limits on the y-axis. For example:
figure(1)
%// Some plotting...
ylim([0 3])
figure(2)
%// Some more plotting
ylim([0 3])
This ensures that the y-axis is limited to the range [0, 3] in both plots. You can do the same for the limits of the x-axis with the command xlim.
Also note that if you want to set the limits for both axes at once, instead of using xlim and ylim (two commands), you can use axis (one command).
you can use the ylim or xlim functions.
You can clone the limits of one plot to another plot in this fashion:
h1 = figure;
% do first plot...
h2 = figure;
%do second plot...
% set first figure as active
figure(h1);
%get limits properties of the axes that are drawn in Figure 1
xL = get(gca, 'XLim');
yL = get(gca, 'YLim');
%switch to second figure and set it as active
figure(h2);
%set axis limit properties of Figure 2 to be the same as in Figure 1
set(gca, 'XLim', xL);
set(gca, 'YLim', yL);
Related
I am trying to plot scatterplots which have an error-bar each. See code below:
dfs = [0 5 10];
Accuracies = [63.1681 49 56];
SE = [0.0142 0.065 0.04 ]*100;
errorbar(dfs, Accuracies, SE, 'ro');
hold on
plot(dfs,Accuracies,'bo');
title('Accuracies');
hold off;
ylim([40 70])
names = {'Cond1'; 'Cond2'; 'Cond3'};
set(gca,'xtick',[1:3],'xticklabel',names)
However, the x-axis labels are not properly aligned. What is the solution for this situation?
You need to set xticks to dfs. Setting them to [1:3] keeps only [1 2 3] and removes the rest.
set(gca, 'xtick', dfs, 'xticklabel', names);
xlim([-1 11]); %just for better visualisation
I have the following graph in Matlab:
I have tried using 'xTick' and 'yTick' to make the axis on each subplot the same, but it's not accomplishing what I would like it to. I also want the both axes of each subplot to share the same range so that I can easily compare the graphs. (i.e. ranging from 0 - 20, in y, and 0 - 400 in x).
I'm not sure how to change this.
My attempt is below. Does anyone know how to do this?
figure()
hold on
subplot (1,2,1);
% xlim([0 400]);
% ylim([0 25]);
graph_made = [num_calls_made];
plot (graph_made);
title('Number of calls made')
xlabel('ID Number of caller');
ylabel('Number of calls');
set(gca, 'XTick', [0:100:400]);
set(gca, 'YTick', [0:5:20]);
subplot (1,2,2);
graph_rec = [num_calls_received];
plot (graph_rec);
title('Number of calls received')
xlabel('ID Number of caller');
ylabel('Number of calls');
set(gca, 'XTick', [0:100:400]);
set(gca, 'YTick', [0:5:20]);
hold off
If you want the axes limits to stay linked as a user interactively zooms or pans, you can also use the linkaxes command...
subplot(1,2,1)
% your plotting code here...
ax = gca; %get the handle to the current axis
subplot(1,2,2)
% your plotting code here...
ax(end+1) = gca; %get the handle to the current axis
linkaxes(ax); %this will link both the x and y axes.
XTick and YTick only change where the labels on axes go, not the limits of the axes. To change those, you have to use axis (or xlim and ylim):
axis([0 400 0 20]) %// [xmin xmax ymin ymax]
I have created 5 3D subplots which include a for loop. However, the labels of the X and Y axes are not displaying for some reason. I would appreciate any help on this matter. Below is the code.
On a separate note, any suggestions to make the figure more aesthetically pleasing would also be much appreciated.
% parameters
b=0.5;
O=27;
x=1:1:5;
% energies
e1 = 1:1:100;
e2 = 1:1:100;
% function
[e1,e2]=meshgrid(e1,e2);
hb=#(x)((O.^2)./factorial(O-x)).*...
exp(-b.*O.*e2);
hu=#(x)(O.^x).*...
exp(-b.*O.*e1);
p=#(x)hb(x)./(hb(x)+hu(x));
f=figure('visible','on')
clf(f);
for i=x
subplot(2,3,i);
mesh(e1,e2,p(i))
title(['X = ',int2str(i)], 'FontSize',12);
% log all axes
set(gca, 'XScale', 'log');
set(gca, 'YScale', 'log');
set(gca, 'ZScale', 'log');
axis([1 100 1 100 10^-300 1])
axis square
grid off
set(gca,'FontSize',10)
xlabel('e1')
ylabel('e2')
zlabel('p_{H}')
end
The issue seems to be something internal to MATLAB with how it is setting the position of the x and y labels when a 3D surface plot is used. This doesn't happen with a basic plot3 plot. If you do a get(get(gca,'Xlabel','Position')), you see that the z coordinate of the label is set to infinity, which I would guess is the problem.
I've come up with a less than ideal workaround, but it seems to accomplish the task:
% parameters
b=0.5;
O=27;
x=1:1:5;
% energies
e1 = 1:1:100;
e2 = 1:1:100;
% function
[e1,e2]=meshgrid(e1,e2);
hb=#(x)((O.^2)./factorial(O-x)).*...
exp(-b.*O.*e2);
hu=#(x)(O.^x).*...
exp(-b.*O.*e1);
p=#(x)hb(x)./(hb(x)+hu(x));
f=figure('visible','on');
clf(f);
for i=x
subplot(2,3,i);
mesh(e1,e2,p(i))
title(['X = ',int2str(i)], 'FontSize',12);
% log all axes
set(gca, 'XScale', 'log');
set(gca, 'YScale', 'log');
set(gca, 'ZScale', 'log');
axis([1 100 1 100 10^-300 1])
axis square
grid off
set(gca,'FontSize',10)
xlabel('e1')
ylabel('e2')
zlabel('p_{H}')
set(get(gca,'xlabel'),'Units','Normalized','Position',[0.75 0 0])
set(get(gca,'ylabel'),'Units','Normalized','Position',[0 0.05 0])
end
You'll probably have to manipulate those position vectors to get the labels exactly where you'd like.
I would also submit a bug report and see what MathWorks says.
I am trying to plot a 512*512 matrix with specified axes values. This is the code I am using but somehow the returned figure still shows the axes labelled as 512 * 512.
x = [0,1];
y = [0,100];
X = reshape(prob_to_1,512,512);
colormap('hot');
figure;
subplot(1,1,1);
axis([0 1 0 100]);
imagesc(X);
I want the final figure to be labelled between 0-1 on y-axes and between 0-100 on the x-axes.
Any suggestions/ideas?
Thanks!!
Unfortunately you cannot do it directly but have to set custom tick labels like this:
X = magic(512); % just some test data
imagesc(X);
set(gca, 'XTick', [0:0.1:1]*512, 'XTickLabel', [0:0.1:1]*100) % 10 ticks
set(gca, 'YTick', [0:0.05:1]*512, 'YTickLabel', [0:0.05:1]) % 20 ticks
Adjust the spacing of the ticks to change the number of ticks accordingly.
I am trying to plot 3 curves using the semilogx matlab function and add a fourth line to an additional y axis on the right. All of them should be plotted on the same logarithmic scale for the x-axis. The following code indicates the derived error; the x-axis is incorrect. The figure has to have a single x-axis mode of ticks, the logarithm one. How could this be fixed?
Plus, how can I add a legend for these 4 curves?
close all, clc
figure, semilogx([1:100:1000],[rand(1,10)],'bo-'),
xlabel('xlabel'),ylabel('ylabel'), hold on;
semilogx([1:100:1000], [rand(1,10)], 'ro-'), hold on,
semilogx([1:100:1000], [rand(1,10)], 'ko-'), hold off
legend('1','2','3','Location','Best')
ax1 = gca;
ax2 = axes('YAxisLocation','right',...
'Color' , 'none',...
'YColor', 'm');
linkaxes([ax1 ax2 ], 'x')
x4 = [1:100:1000];
y4 = [rand(1,10)*2];
line(x4, y4, 'color', 'm', 'Marker','x','LineStyle',':', 'parent',ax1)
ylabel('y2')
You can use plotyy function to plot two of your lines, one on the right and one on the left. You can then hold on and plot the remaining lines using semilogx.
plotyy([1:100:1000], [rand(1,10)], [1:100:1000], [rand(1,10)]*2, #semilogx);
hold on;
semilogx([1:100:1000], [rand(1,10)], 'ro-');
semilogx([1:100:1000], [rand(1,10)], 'mo-');
hold off;
legend('Line1','Line2','Line3','Line4','Location','Northwest')