matlab-figure

I'm plotting some data with MATLAB and I'd like to adjust the distance between axis label and the axis itself. However, simply adding a bit to the "Position" property of the label makes the label move out of the figure window. Is there a "margin" property or something similar? In the above figure, I'd like to increase the distance between the numbers and the label "Time (s)" while automatically extending the figures size so that the label does not move out of bounds. This is how I set up the figure / axis. figure; set(gca, ... 'Box' , 'off' , ... 'LooseInset' , get(gca, 'TightInset') * 1.5 , .

It is generally very easy to call mex files (written in c/c++) in Matlab to speed up certain calculations. In my experience however, the true bottleneck in Matlab is data plotting. Creating handles is extremely expensive and even if you only update handle data (e.g., XData, YData, ZData), this might take ages. Even worse, since Matlab is a single threaded program, it is impossible to update multiple plots at the same time. Therefore my question : Is it possible to write a Matlab GUI and call C++ (or some other parallelizable code) which would take care of the plotting / visualization? I'm

I want to add a x-axis line at 0 to a matlab figure so that I can compare my data to see if it is positive or negative when saving the figures to a jpg. What is the best way to do this? I know you can use line() but it just seems cumbersome because you need to specify the x and the y ranges. Is there an easier way? Thanks! I don't believe there is a built-in way that is more convenient. I use hline() and vline() from FileExchange, which work like a charm: http://www.mathworks.com/matlabcentral/fileexchange/1039 There exist an undocumented function graph2d.constantline : plot(-2:5, (-2:5).^2-1)

I want to get some specific values from a Matlab Figure. The number of values can be 3, 5, 10, 50 or any N integer. Like in sample pictures, I want to get values of A, B, C. in form of e.g A=(430,0.56). A,B,C are not the part of Plot. I just wrote them in Photoshop help clarify the question. Note: On every execution of the code input values can be different. The length of the input values (Graph Values) can also change every time. hc=get(gca,'children'); data=get(hc,{'xdata','ydata'}); t=data{1}; y=data{2}; tA=250;tB=1000; %tA is starting Point and tB is the last point of data as ur figure

I'm trying to convert a color image from rgb to hsv (make changes) then back to rgb. As a test I made this code just to test how to go from rgb to hsv back to rgb but when I view the image it just shows up as black. What am I missing? *PS I'm using octave 3.8.1 which works like matlab Here are the octave 3.8.1 packages I have loaded: >>> pkg list Package Name | Version | Installation directory --------------+---------+----------------------- control *| 2.6.2 | /usr/share/octave/packages/control-2.6.2 general *| 1.3.4 | /usr/share/octave/packages/general-1.3.4 geometry *| 1.7.0 | /usr/share

This question already has an answer here: Plotting piecewise function 1 answer How can I plot a wave (represented by 1 x N matrix) with different colors in matlab. The range for a specific color can be provided manually. See the diagram below for the expected output. Here is a simple option: x = linspace(-4*pi,4*pi,10000); % some data y = -sin(x); % some data N = 4; py = reshape(y,[],N); px = reshape(x,[],N); plot(px,py,'LineWidth',2) Where y is your vector, and N is the number of pieces you want to distinguish. Note that you have to make sure that y is dividable by N with no remainder. If you