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how to create a .mat file
Use *imread* function to load images, then you can save you variables in MAT file using *save* function. MAT-files can be loaded...

11年以上前 | 0

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save the results of who function
You have to use quotation marks, because an argument of *who* should be string: List = who('B*')

11年以上前 | 0

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Getting value from a listbox. Error: Cell contents reference from a non-cell array object.
I suppose that your listbox contains only one string. Compare two codes: 1: lb = uicontrol('Style','listbox','Position',...

11年以上前 | 0

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Calculate daily average out of many files per day
Let suppose that all file names are stored in *filename* variable: d = zeros(495,595,35); for k=1:35 d(:,:,k) = imp...

11年以上前 | 0

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How to delete a frame after use?
<http://www.mathworks.com/help/matlab/ref/delete.html> <http://www.mathworks.com/help/matlab/ref/recycle.html>

11年以上前 | 0

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what does this simulink command mean ?
* [0 100] is the time span, * [] - here you can put a option structure, which can modify simulation settings. You can change si...

11年以上前 | 1

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reading files and data into matlab
Enter to subfolders: *<http://www.mathworks.com/help/matlab/ref/cd.html cd>* Exit from subfolders *cd ..* Read files: *<ht...

11年以上前 | 0

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How can I output intermediate vaviables when using ode45 funcion?
You can use *OutputFcn* to do this. Just add options to ode45 in this way: options = odeset('OutputFcn',@myfun); [T,Y]=o...

11年以上前 | 0

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How to determine the position of an integer
If the values are in the cell format use *cell2mat* function: pos = find(cell2mat(d)==3)

11年以上前 | 0

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unique values in array
Simply idea is to use loop: f = [1 , timing(1)]; for k=2:numel(timing) if timing(k)~=timing(k-1) ...

11年以上前 | 0

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I am doing a project using structured light, I need image to be showed in 'full screen mode', how?
Have you tried this function: <http://www.mathworks.com/matlabcentral/fileexchange/23404-fullscreen-1-1> ?

11年以上前 | 0

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How can I change the x-axis to log scale using boxplot?
First question: Can you write small example? Because I don't understand fully your problem. Second question: Instead of...

11年以上前 | 0

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Is there an implementation of Tarjan's algorithm for triconnected components of a graph in MATLAB?
<http://www.mathworks.com/help/toolbox/bioinfo/ref/graphconncomp.html GRAPHCONNCOMP> - Find strongly or weakly connected compone...

12年弱前 | 0

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How to open a .m file by a double-click, on Ubuntu 12.04
This might help: http://www.walkingrandomly.com/?p=300

12年弱前 | 0

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Adjusting the colorbar to zero value
I'm not sure if I good understand your problem, but maybe *caxis* function will be helpful: contourf(peaks+10) cmap = je...

12年弱前 | 0

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How can I update data for quiver plot?
I think that this is impossible for quiver plot. Try this code: [X,Y] = meshgrid(-2:.2:2); Z = X.*exp(-X.^2 - Y.^2); ...

約12年前 | 2

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I have generated a large dataset. Now I need to draw random samples from it. How can I do this?
For example: data = exp(-(-10:0.1:10).^2); idx = randperm(numel(data)); N = 20; idx = idx(1:N); plot(id...

約12年前 | 0

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plotting several quadratic functions
Yes, I think that it is good idea: figure hold all x = linspace(0,1); for a=-1:1:2 plot(x,a*x.^2+1) ...

約12年前 | 0

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How to display 3D image in each layer?
Just clear unnecessary channels: I = imread('http://www.3drealms.com/zerohour/images/zhbackground.bmp'); figure r = I...

約12年前 | 1

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How can i reset axes and edittext?
So add a button and in its callback fucntion write code which clear axis and edittext field. i.e. cla(handles.axis1) ...

約12年前 | 1

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editing inside cells array
You can try this code: for i=1:size(POT1,1) for j=2:size(POT1,2) if ~isempty(POT1{i,j}) PO...

約12年前 | 1

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i want to find out area under the curve using quad command ,the curve is generated after running the programme
If you draw yourself Bode plot (see code), you receive vectors 'x' and 'y', which can be numerically integrate. [HMag, HPha...

約12年前 | 0

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plot 2d color graph
In my opinion you should use the imagesc function. x = 1:10;% 10 stimulus y = 1:8;% 8 subparts z = randi(5,8,10)-1;% ...

約12年前 | 0

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how can i make the isotherm plot from excel data using MATLAB
Try function *contour* or *imagesc*.

12年以上前 | 0

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contourlines in time format
It may be helpful to Analyze this code: Z = 5+abs(peaks)/10; [C,h] = contour(interp2(Z,4)); th = clabel(C,h); set(...

12年以上前 | 0

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How to create non-repetitive random integers
Try this code: N = 100; x = randperm(N); x = x(1:70)

12年以上前 | 0

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calculate the distance between 2 points
The common use distance formula is the second one: d = sqrt((x(p1)-x(p2))^2+(y(p1)-y(p2))^2); <http://en.wikipedia.org/wik...

12年以上前 | 0

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how to skip from one line to another?
I recommend to use *if* statement for this purpose: x = 1:10; y = x.^2; if 0 y = sqrt(y); end plot(x,y) ...

12年以上前 | 0

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including subject_name in variable with a loop
eval(['final_subject_' num2str(i) '= [mean1 mean2 mean3 mean4]'])

12年以上前 | 0

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replacing the value
samples = [ .6 .1 .8 .2 .98 .96 .45 .4 .87 ]; genes = [1;2;10]; %A=(<=.4) A = genes(any...

12年以上前 | 0

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