I use the following command:
isosurface(data,color)
Now if I use the same command with different data again, it gets superimposed on the previous one.
So, I tried doing:
p = patch(isosurface(foo));
isonormals(foo,p)
delete(p);
to delete the previous plot, but this way i can't use the colorbar.
How do I go about this?
Have you tried this?
cla(gca)
cla clears an axes and gca is the handle to the current axes you're are plotting on.
Assuming you just want another patch plot in the same figure window, just use
hold off
Related
I'm working on a custom progress monitor with some graphs. I've noticed that Matlab's waitbar creates a figure with some special properties so that if you do
plot(rand(100,1));
wb = waitbar(0);
plot(rand(100,1));
the second plot ends up replacing the first plot and not in wb. Is there a property I can set so that when I create my progress monitor and then plot something afterwards, the graph doesn't end up in my figure?
To be clear, I'm trying to have
plot(rand(100,1));
temp = MyProgressBar();
plot(rand(100,1));
create a figure for the first plot, create a different figure in the second line, then plot a new graph in the third line.
To protect your progress bar figure against subsequent plotting operations, I would set the 'HandleVisibility' property of its axes to 'off'. That should prevent it ever becoming the current axes, thus keeping subsequent plotting commands from modifying or adding to it. It's a good practice for stand-alone figures/GUIs in general that you turn off the handle visibility of all objects (figure, uicontrols, etc.) in this way to insulate them against being modified by outside code. This is almost certainly what is done in the code for waitbar.
As an additional aside, it's good practice to target your plots to a given axes by passing the axes handle as the first argument. You also have to make sure that, if you want new plots to be added to existing plots, you use things like the hold command first. Here's how I'd rework your example, assuming you want the two plots to appear on the same axes:
plot(rand(100,1)); % Creates new figure and axes
hAxes = gca; % Get the axes handle
hold on; % Allow subsequent plots to be added
temp = MyProgressBar();
plot(hAxes, rand(100,1)); % Will be added to the first plot axes
When in Matlab I use openfig(filename); to open a saved figure, it always opens a new window. All the 'reuse' argument does is not load the file when it appears to already be open. However, I wish to open the file into a given figure, and just overwrite its contents. Is there a way to pass a figure handle to openfig, or is there another function that would accomplish this?
So in code, what I would like to do is something along the following lines:
f = figure;
openfig(filename, 'Figure',f);
and then the figure would be displayed in figure f rather than having opened a second figure window.
I think you can arrange something close to what you want with the copyobj function. Here is a try with a docked figure:
% --- Create sample figure
h = figure;
ezplot('sin(x)');
set(gcf, 'Windowstyle', 'docked');
pause
% --- Replace the axes
clf
g = openfig('test.fig', 'invisible');
copyobj(get(g, 'CurrentAxes'), h);
delete(g);
Which gives me a smooth replacement of the axes, without flickering of the figure.
However, I don't know how this would behave with a fullscreen figure, it surely depends on the method you choose. Check also the doc of copyobj in detail, it's not copying everything so you may want to use the legacy option.
I am working with Matlab GUI. My problem is the plots are not updated when I change the input data. My code is long but here is the plotting function I am using:
axes(handles.Diagram1)
hold all
for i=1:6:numel(t)
plot(rn,E(i,:)/1000000)
end
set(axesHandle,'Diagram1','Diagram1');
The tag of the axis plot is "Diagram1!
How can I fix this?
MATLAB plots are not permanently linked to the data they display, so if you change the data after plotting, the plot will not be automatically updated. You would need to update the plot yourself after changing the data by reexecuting the plot command.
I've never used it myself, but you're might looking for the drawnow function - see documentation here
You can create a "clean figure" button, that 1) clears current axis (cla), 2) removes the legend, 3) clears the title, and sets any counter to 1. The figure is still there, but its contents are gone. Or you just include the code inside an "if":
function cleanbutton_Callback(source,eventdata)
cla
legend off
title ''
counter = 1;
end
Is this what you need?
I draw images to axes in my matlab UI, but I don't want the axes and ticks to be visible how do I prevent that, and also where do I make this call?
I do this
imagesc(myImage,'parent',handles.axesInGuide);
axis off;
Is this what you are looking for?
This is definitely somewhere else on this website and in the matlab documentation. Try typing
help plot
Or using the documentation on plotting!
edit: Now that you have shown what you are doing. (You don't need the handles, I just always write them in to clutter my workspace)
myImage = yurbuds0x2Dironman; # don't ask
fH = figure;
iH = imagesc(myImage);
set(gca,'xtick',[],'ytick',[])
Are you able to do it like this?
I support the
set(gca,'xtick',[],'ytick',[]);
approach over the
axis off
one. The reason is set(gca, ...) just removes the labels but keeps the axes, unlike axis off. I am generating a group of images with fixed dimensions to combine later into a video. Deleting the axes creates different size frames that can't be recombined.
Usually when I plot in MATLAB, it always draws on the same figure. How do I make it draw in a new figure?
I know it is pretty elementary, but I'm not finding it using Google Search.
figure;
plot(something);
or
figure(2);
plot(something);
...
figure(3);
plot(something else);
...
etc.
While doing "figure(1), figure(2),..." will solve the problem in most cases, it will not solve them in all cases. Suppose you have a bunch of MATLAB figures on your desktop and how many you have open varies from time to time before you run your code. Using the answers provided, you will overwrite these figures, which you may not want. The easy workaround is to just use the command "figure" before you plot.
Example: you have five figures on your desktop from a previous script you ran and you use
figure(1);
plot(...)
figure(2);
plot(...)
You just plotted over the figures on your desktop. However the code
figure;
plot(...)
figure;
plot(...)
just created figures 6 and 7 with your desired plots and left your previous plots 1-5 alone.
The other thing to be careful about, is to use the clf (clear figure) command when you are starting a fresh plot. Otherwise you may be plotting on a pre-existing figure (not possible with the figure command by itself, but if you do figure(2) there may already be a figure #2), with more than one axis, or an axis that is placed kinda funny. Use clf to ensure that you're starting from scratch:
figure(N);
clf;
plot(something);
...
As has already been said: figure will create a new figure for your next plots. While calling figure you can also configure it. Example:
figHandle = figure('Name', 'Name of Figure', 'OuterPosition',[1, 1, scrsz(3), scrsz(4)]);
The example sets the name for the window and the outer size of it in relation to the used screen.
Here figHandle is the handle to the resulting figure and can be used later to change appearance and content. Examples:
Dot notation:
figHandle.PaperOrientation = 'portrait';
figHandle.PaperUnits = 'centimeters';
Old Style:
set(figHandle, 'PaperOrientation', 'portrait', 'PaperUnits', 'centimeters');
Using the handle with dot notation or set, options for printing are configured here.
By keeping the handles for the figures with distinc names you can interact with multiple active figures. To set a existing figure as your active, call figure(figHandle). New plots will go there now.
Another common option is when you do want multiple plots in a single window
f = figure;
hold on
plot(x1,y1)
plot(x2,y2)
...
plots multiple data sets on the same (new) figure.
As simple as this-
figure, plot(yourfigure);