I wanted to add the mean of the Young's modulus to my box plot. It works perfectly fine with a vertical box plot, but I can’t get it to work with a horizontal box plot... It looks like MATLAB is doing something, but not displaying anything except the box plot.
I tried to fix the axis, but that doesn’t work either. It looks like whenever the box plot is rotated everything that worked before gets thrown away.
%Boxplot all tensile strength tests
figure(f1)
subplot(2,1,2)
hold on
xlabel('Youngs Modulus [MPa]') ;
ylabel('Samples:') ;
boxplot(E,k,'orientation','vertical') ;
plot(E_mean,'ok');
hold off
plot(E_mean)
is the same as
plot(1:length(E_mean), E_mean)
That is, you plot values as the y coordinate against their index as the x coordinate.
When making a horizontal box plot, the function switches the coordinates to plot. That is, it plots the index as the y coordinate, and the values as the x coordinate. Thus, you should do:
plot(E_mean, 1:length(E_mean))
Related
I use some things from this question get-rid-of-the-white-space-around-matlab-figures-pdf-output to get rid of the white space when saving figure plots and images. This works fine, but my problem is when I use commands like "axis square" or "axis image". Ivt sets TightInset property of corresponding axes to 0 in "y" direction. I mean when I use this:
inset=get(a,'TightInset');
second and fourth numbers in "inset" are always zero, even if I set title and x-label. So in the end I don't see plot titles and x-labels.
Can I fix it somehow? So far I do it manually by adding some suitable number, but it is not convenient.
EDIT: Some more code for example. It displays two histograms.
h=figure;
subplot(121)
bar(bins,histogram1,'hist');
axis square
title('Historgram 1');
xlabel('Intensity');
ylabel('Pixel count');
set(gca,'xlim',[0 1])
subplot(122)
bar(bins,histogram_out,'hist');
axis square
title('Histogram 2');
set(gca,'xlim',[0 1])
xlabel('Intensity');
ylabel('Pixel count');
and if I call
a=get(h,'Children');
for i=1:length(a)
inset=get(a(i),'TightInset');
%...some stuff here
end
those y-related numbers in inset are zeros. If I comment axis square and do this, then inset are correct and it does what I need.
As far as I know when you use 'TightInset' you'll get only the graph or image, axis will be removed. I downloaded a function from mathworks file exchange 'saveTightfigure.m' to solve a similar problem. But I did not needed axes. If you need axes may be you can edit limits set inside the function. I mean you can give a little more space at left and bottom for keeping the axes.
I would like to change the view of a 3D plot in matlab such that the y-axis points upward and the z-axis points to left. For example, consider the following plot:
Here the x-axis points forward, the y-axis points to the right and the z-axis points upward.
I would like to have the y-axis points upward and the z-axis points to the left instead. I tried to rotate the plot (using the figure window toolbar rotate button) but I could not get it to work. (It should just be a simple 90 degrees rotation about the x-axis)
Code to generate the plot:
membrane
view(100,50)
xlabel('x-axis');
ylabel('y-axis');
zlabel('z-axis');
grid on
Try using view. I don't have MATLAB available so I can't test it, but I think it can do what you want.
Example from the documentation:
Set the view along the y-axis, with the x-axis extending horizontally
and the z-axis extending vertically in the figure.
view([0 0]);
EDIT:
Try using three inputs to the view function. I can't experiment myself, but you should be able to do it if you choose the right values here.
From documentation:
view([x,y,z]) sets the view direction to the Cartesian coordinates x,
y, and z. The magnitude of (x,y,z) is ignored.
EDIT 2:
Check out camroll. I think camroll(90) (possibly in combination with view) will work.
From documentation:
camroll(dtheta) rotates the camera around the camera viewing axis by
the amounts specified in dtheta (in degrees). The viewing axis is the
line passing through the camera position and the camera target.
This was posted a while ago, but in case someone else is looking for ways to set y-axis as the vertical one here is a possible fix.
Manually: In the command window type cameratoolbar('show') which will open an interactive toolbar in your plot from which you could change the view. One of the options is to set a principle axis to x, y, or z.
Or in you script you could use cameratoolbar('SetCoordSys',coordsys) command which sets the principal axis of the camera motion. coordsys can be: x, y, z, or none.
http://uk.mathworks.com/help/matlab/ref/cameratoolbar.html
I think this might be simple. If we simply plot a vector in MATLAB, it will show it normally, going left to right. That is, the x-axis will have 'time'.
But, I would like to show it going from up to down instead in the plot. How can I do that? In other words, I want the amplitude to be shown on the x-axis, and the time to be shown on the y-axis.
Thanks.
Create a vector with the coordinates of your time vector t and flip x and y in your call to plot:
plot(t, 1:length(t));
I am using a plotyy in matlab to plot two data set in a same figure. The left and right axis are of the different range. But I just find that on the right axis, there seems to be two different set of scale shown. I think one of them is really from the left axis.
t=-1:0.02:1;
y=sin(t);
y1=2*sech(t);
[AX, H] =plotyy(t, y, t, y1);
ylim(AX(2), [0 3.25]);
set(AX(2), 'YTickMode', 'auto')
After searching that online, I found that to turn off the box will solve the problem too. But the problem is to turn the box off will case the top horizontal line gone also. Is that anyway to remove the extra scale and keep the frame? Thanks.
It is possible and not terribly difficult, here's an illustrative example figure based on your test code
What I've done is to add a third axis (in this case I accomplished this by taking a shortcut - I called plotyy twice resulting in an extra blue line in the first axis and an extra second axis with a green line).
The idea is to turn the bounding box off for both the first and second axes, and then to turn it on for the third. That results in the top axis giving you the left vertical axis, the second the right vertical axis, and the third the top horizontal axis.
I don't think there's simple a way to do what you want. If you turn off the box (to get rid of the blue ticks on the right hand side) then the top horizontal line will disappear:
set(AX(1), 'Box','off')
If you want you could re-draw the line back in with:
line([-1, 1], [1, 1])
Or more generally:
lims = get(AX(1),{'XLim','YLim'});
line(lims{1}, lims{2}([2 2]))
I would like to edit the axes in my series of images being displayed.
This is what my image looks like:
As you can see, it ranges from 0 to about 500 from top to bottom. Can I invert that?
Plus, I want to mirror the image being shown, so that it starts from left to right... or, if it's possible, to let the axes show from right to left.
To reverse an axis, you can set the 'XDir' or 'YDir' property of the current axes to 'reverse':
set(gca,'XDir','reverse'); %# This flips the x axis
Keep in mind that flipping an axis in this way flips everything in the plot as well. This probably isn't what you want to do for the y axis. You probably just want to flip the y axis labels, which you can do by modifying the 'YTickLabel' property in the following way:
yLimits = get(gca,'YLim'); %# Get the y axis limits
yTicks = yLimits(2)-get(gca,'YTick'); %# Get the y axis tick values and
%# subtract them from the upper limit
set(gca,'YTickLabel',num2str(yTicks.')); %'# Convert the tick values to strings
%# and update the y axis labels
Im = imread('onion.png');
Im = flipdim(Im ,1); % vertical flip the image.
axis xy; %set the xy to be at (0,0), this flips the image back again.
And whoop dee doo the image now have an y axis with the range from bottom to top!
How can I reverse the y-axis when I use the IMAGE or IMAGESC function to display an image in MATLAB? Another solution from mathworks
I found gnovice's answer helpful but it needed some tweaks for me. I think the following is a more general way to reverse the labels on the y axis. Simply sort the y tick numbers in descending order and relabel.
yTicks = get(gca,'YTick');
yTicks_reverse = sort(yTicks,2,'descend');
set(gca,'YTickLabel',num2str(yTicks_reverse.'));
I was redirected here from a duplicate question:
Flipping axis ticks
What 'ale' wanted to do there was just to flip the y-axis direction to be top down. If that is the only thing needed and nothing else, I would use:
axis ij