I can't seem to get linkaxes to work (code is below). I am trying to get the subplots to line up, such that visually the x-axis is has the same range and width for both subplots. The misalignment is in both the pop-up figure window and the saved JPG. Using Matlab R2018a.
Here is my code, and below is what the figure looks like:
x1 = [27247 26973 27265 28924 27182 27430 26534 26839 7876 26484 29787 26934 27218 25777 27801 8250 34820 7980 26927 34639];
y1 = [-2350 -3334 -2948 -2336 -2778 -2813 -3383 -3635 -31 -3334 -4216 -3284 -2271 -2477 -2058 375 -821 351 -3441 -1108];
ax1 = subplot(2,1,1);
scatter(x1, y1)
box on
grid on
axis equal
xlims = get(gca, 'XLim')
ax = gca;
ax.XRuler.Exponent = 0;
ax.YRuler.Exponent = 0;
xlims = get(gca, 'XLim')
ax2 = subplot(2,1,2);
scatter(x1, y1)
xlim(xlims)
box on
grid on
ax = gca;
ax.XRuler.Exponent = 0;
linkaxes([ax1,ax2],'x')
I've also tried this (below), but it doesn't change the plot.
% adding this to the first subplot:
xlims = get(gca, 'XLim')
positioning = get(gca,'position');
% adding this to the second subplot:
xlim(xlims)
set(gca, 'position', [positioning(1) positioning(2)/5 positioning(3) positioning(4)]) %x y width height
And here is what the figure looks like:
This was solved on the Matlab forums, and here is a summary/application of the solution:
x1 = [27247 26973 27265 28924 27182 27430 26534 26839 7876 26484 29787 26934 27218 25777 27801 8250 34820 7980 26927 34639];
y1 = [-2350 -3334 -2948 -2336 -2778 -2813 -3383 -3635 -31 -3334 -4216 -3284 -2271 -2477 -2058 375 -821 351 -3441 -1108];
ax1 = subplot(2,1,1);
scatter(x1, y1)
box on
grid on
axis equal
xlims = get(gca, 'XLim')
ax = gca;
ax.XRuler.Exponent = 0;
ax.YRuler.Exponent = 0;
xlims = get(gca, 'XLim')
ax2 = subplot(2,1,2);
scatter(x1, y1)
xlim(xlims)
box on
grid on
ax = gca;
ax.XRuler.Exponent = 0;
set(gcf,'Resize','off') %%%%%%%% this line fixes it for some reason!
linkaxes([ax1,ax2],'x') % want to link x-axis only
%figOut = 'test';
%print(figOut, '-r300', '-djpeg')
Related
I'm trying to plot a function using two different x-axes. As you can see in the image, the axes are not overlapping properly!
How do I fix it? I've already set it up to have the same number of ticks on both axes but it didn't help!
This is the code I'm using:
ax1 = gca;
set(gca, 'box', 'off')
xlabel('Frequency shift, \Delta\omega (/THz)');
ylabel('Autocorrelation, F_{2}');
ylim([0.0,1]);
xlim([0, 10])
xlimits = get(ax1,'XLim');
ylimits = get(ax1,'YLim');
xinc = (xlimits(2)-xlimits(1))/5;
yinc = (ylimits(2)-ylimits(1))/5;
set(ax1,'XTick',[xlimits(1):xinc:xlimits(2)],...
'YTick',[ylimits(1):yinc:ylimits(2)])
ax1.XColor = 'b';
ax1.YColor = 'b';
ax1_pos = ax1.Position;
ax2 = axes('Position',ax1_pos,...
'XAxisLocation','top',...
'YAxisLocation','right',...
'Color','none');
ax2 = gca;
xlim([0, 2.5]) %in nm (note two pi)
ylim([0.0,1]);
xlimits = get(ax2,'XLim');
ylimits = get(ax2,'YLim');
xinc = (xlimits(2)-xlimits(1))/5;
yinc = (ylimits(2)-ylimits(1))/5;
set(ax2,'XTick',[xlimits(1):xinc:xlimits(2)],...
'YTick',[ylimits(1):yinc:ylimits(2)])
xlabel('Wavelength shift, \Delta\omega(/nm)');
ylabel('Autocorrelation, F_{2}');
ax2 = gca;
%set(ax,'XMinorTick','on','YMinorTick','off')
ax2.FontSize = 15;
ax2.Box = 'on';
ax2.LineWidth = 2;
set(gca, 'box', 'off')
set(findall(gcf,'type','text'),'FontSize',15);
Try maybe
ax1_pos = get(gca,'Position');
ax2 = axes('Position', [ax1_pos(1) (ax1_pos(2) - 0.5) ax1_pos(3) ax1_pos(4)]);
I get the following figure with a bar plot :
I would like to remove the XTick with red circles but keep Xtick for the middle of each group of bars (i.e 1024, 10240, 102400, 1024000, 10240000).
I generate this image with the Matlab script below :
x = load('performances.txt');
% Get Runtimes
for i = 1:6
time_seq(1:5,i) = x((i-1)*5+1:i*5,3);
time_gpu(1:5,i) = x((i-1)*5+1:i*5,4);
speedup(1:5,i) = time_seq(1:5,i)./time_gpu(1:5,i);
end
% X axis
sizeArray = [1024 10240 102400 1024000 10240000 102400000]
figure(1);
% Get Histogram
h = bar(log10(sizeArray),log10(speedup(1:5,:)')); % get histogram
% Log10 for x-axis and xtick
set(gca,'Xtick',log10(1024):1:log10(1.024*10^8))
set(gca,'Xticklabel',10.^get(gca,'Xtick'));
set(h(1),'facecolor',[0.5 0.5 1]);
set(h(2),'facecolor',[1 0.5 0.5]);
set(h(3),'facecolor',[0.5 1 0.5]);
set(h(4),'facecolor',[0.5 0.5 0.5]);
set(h(5),'facecolor',[1 0.5 1]);
hPatch = findobj(h,'Type','patch');
set(hPatch,'facealpha',1);
grid on;
title('Benchmark GPU vs CPU');
% Size of WorkGroup
h = legend('N=16','N=32','N=64','N=128','N=256');
v = get(h,'title');
set(v,'string','WorkGroup size');
% Place legend
rect = [0.6,0.25,0.2,0.2];
set(h,'Position',rect,'color','w');
hPatch = findobj(h,'Type','patch');
set(hPatch,'facealpha',1);
xlabel('log(Array size)');
ylabel('log(Speedup)');
% Make right y-axis visible
ax1 = gca;
ax2 = axes('Position', get(ax1, 'Position'));
set(ax2, 'YAxisLocation', 'right', 'Color', 'none', 'XTickLabel', []);
set(ax2, 'YLim', get(ax1, 'YLim'));
I tried different things but couldn't make them disappear, anyone would have an idea or a clue ?
Thanks
It happens because of the last 3 lines in your code where you add the Y-axis from the right side. You need to add the following line at the end:
set(ax2,'XTick',[]);
Here is my result (with fake data):
I am having trouble getting my title to show when I have a figure with two x-axis.
The plot looks good and the axis scales are as I would like them to be but the second axis label and the title end up outside my figure.
How do I get the plot and axis to have the same size and change the size of the figure to include labels and title?
Here is a minimal example:
x1 = linspace(0, 5);
y11 = sin(x1);
y12 = cos(x1);
x2 = linspace(4, 12);
figure(1)
plot(x1, y11, 'r');
hold on
grid on
plot(x1, y12, 'k');
axis([0 5 -1 1.8]);
legend('sin(x)', 'cos(x)');
xlabel('x')
ylabel('y-label');
ax1 = gca;
ax1_pos = ax1.Position;
ax2 = axes('Position', ax1_pos,...
'XAxisLocation', 'top',...
'YAxisLocation', 'right',...
'Color', 'none');
ax2.YColor = 'w';
title('2:nd Harmonics');
line(x2,0,'Parent',ax2,'Color','k')
xlabel('n');
As a workaround you could pre-define the Position property (i.e. size) of the 1st axes before generating the plot so that the title appears correctly even if you add a 2nd axes. For example, right after the call to figure(1) add something like this:
ax1 = axes('Position',[0.11 0.11 0.75 0.75]);
Also, if you wish to print exponent values in the title you can use Latex formatting as follows:
title('2^{nd} Harmonics');
Here is the whole code with output:
clear
clc
close all
x1 = linspace(0, 5);
y11 = sin(x1);
y12 = cos(x1);
x2 = linspace(4, 12);
figure(1)
%// Set axes position manually
ax1 = axes('Position',[0.11 0.11 0.75 0.75]);
plot(x1, y11, 'r');
hold on
grid on
plot(x1, y12, 'k');
axis([0 5 -1 1.8]);
legend('sin(x)', 'cos(x)');
xlabel('x')
ylabel('y-label');
%ax1 = gca;
ax1_pos = get(ax1,'Position');
ax2 = axes('Position', ax1_pos,...
'XAxisLocation', 'top',...
'YAxisLocation', 'right',...
'Color', 'none');
set(ax2,'YColor','w');
%// Notice the Latex formatting to print the exponent
title('2^{nd} Harmonics');
line(x2,0,'Parent',ax2,'Color','k')
xlabel('n');
Then you can resize as you wish; the title stays visible.
I'm working on an assignment in which we need to plot curves with gridlines at specific points but I can't figure out how to do it.
This is what I got so far:
figure,
plot(x1,y1)
xlim([0 20]);
ylim([-0.5 1]);
ax = gca;
ax.XTickMode = 'manual';
ax.XTick = [0:5:20];
grid on;
And, on the picture below, is what I needed:
Well, you need to set the YTicks as well.
figure
x1 = 0:0.01:20;
y1 = exp(-x1/4).*sin(x1); plot(x1,y1);
plot(x1,y1)
xlim([0 20]);
ylim([-0.5 1]);
ax = gca;
ax.XTick = [0:5:20];
ax.YTick = [-0.4:0.2:1];
xlabel('$$f(x)$$','interpreter','latex')
ylabel('$$x$$','interpreter','latex')
title('$$f(x) = \exp{(-\frac{x}{4})} \cdot \sin(x)$$','interpreter','latex')
grid on;
I'm using the following code:
x = linspace(0, 9, 10);
y1 = x;
y2 = x.^2;
y3 = x.^4;
myfig = figure('Position', [500 500 400 320]); %[left, bottom, width, height]:
ax1 = gca;
hold on
p1 = plot(x,y1,'x--r');
p2 = plot(x,y2,'*-b');
xlabel('blaaa');
ylabel('fooo');
xlim([0 max(x)]);
ax2 = axes('Position',get(ax1,'Position'),...
'XAxisLocation','top',...
'YAxisLocation','right',...
'Color','none',...
'XTickLabel', [],...
'XColor','k','YColor','k');
ylabel(ax2, 'asdasd');
linkaxes([ax1 ax2],'x');
hold on
p3 = plot(x,y3,'s:g','Parent',ax2);
legend([p1 p2 p3], {'one', 'two', 'three'}, 'Location', 'NorthWest');
whereas the right y-label isnt shown: Is there a way to show it by decreasing either the margin between the left-edge and the left y-label or by decreasing the width of the actual plotted data without resizing the figure window?
Thanks
Edit: Added an image:
Either decrease the red margin or the 'green' size, because wherre the blue arrow is, the y-label is now shown anymore since it doesn't fit!
Try replacing the line:
ax1 = gca;
with:
ax1 = axes('Position',[0.11 0.11 0.75 0.812]);
To manually set the axis position/size in normalized units.