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How to create variability charts?
*EDIT*: <http://www.mathworks.com/matlabcentral/fileexchange/40878 file added to MATLAB File Exchange>. Share and enjoy! Bas...

11 years ago | 1

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11 years ago | 0

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How to get distance & angle of a point from the center of a minor axis ??
Do you have the coordinates of the point and the center (in standard Cartesian coordinates)? If so, just use |norm| and |atan2|...

11 years ago | 1

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adding varied length vectors to a new matrix sequentially
Sounds like a job for a cell array: x = cell(n,1); for k = 1:n vec = ...; x{k} = vec; end

11 years ago | 1

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Remeshing points on curved line
If I understand the problem correctly, you have an array of |m| monotonically increasing, but unequally spaced, values. You wan...

11 years ago | 0

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Positioning using azimuth and elevation information
You might be able to use some Mapping Toolbox functions to convert between various Earth coordinate systems. However, not knowi...

11 years ago | 1

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Problem in kmeans, image segmentation algorithm.
You can do ... = kmeans(...,'start',M); where |M| is a matrix of the initial locations of the centers (each row of |M| i...

11 years ago | 1

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How use csvwrite to write with a new blank line each time
|csvwrite| doesn't have an append option, but |dlmwrite| does: dlmwrite('file.csv',str,'-append','delimiter',',')

11 years ago | 0

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How can I create a matrix to store my data?
The loops for |z| aren't going to achieve anything because |phi| and |alpha| are scalars, so all you're really doing is |z = t_s...

11 years ago | 0

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Can't Figure out where I have gone wrong, could use some help please
It looks like what you're trying to do is index into the correct row and column of |C|, based on the input strings for |gender| ...

11 years ago | 1

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Translate values from plot to another
It sounds a bit like you have two measurements that should be the same, except for a scaling factor that you don't know. Is tha...

11 years ago | 0

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How to set the bars wider apart?
The numbers currently go pretty much right across the width of the figure, so there's not a whole lot of real estate you can gai...

11 years ago | 0

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Can you use ODE45 in a for loop?
Given that |ode45| is a variable step solver, you don't know how many |t| and |x| values you'll get each time, so the simplest s...

11 years ago | 1

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Warning: Explicit solution could not be found.
|solve| is trying to do an analytic solve, which turns out to be too hard to do. But everything in your equations are defined n...

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How can I simulate data from an interval which needs to satisfy a constrain/condition?
Do you need to generalize this? Because for this case you could just do: x = 20*rand(75,1); y = x; y(1:25) = 100 - 2...

11 years ago | 0

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How do we plot a graph with non available values for y without breaking the continuity?
You can interpolate to fill the missing values, as Azzi suggests, or simply remove all the NaNs: idx = ~isnan(M(:,2)); x...

11 years ago | 2

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How do I import multiple csv files?
If the files all have the same format, and you have access to a recent version of MATLAB (12b would be nice...), use the Import ...

11 years ago | 0

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sum elements of matrix if...
As far as I can figure out what you're doing, this is equivalent: CRows = max(B(:)); C=NaN(CRows,10); for i = 1:CRows...

11 years ago | 0

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How to present two versions of instruction text at random?
I see several problems. Is |seq| a cell array of strings or a cell array of cells (or something else)? Either way, respma...

11 years ago | 0

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How do you replace vector values?
What you have inside the |while| loop is basically what you need: if A(n)<1 A(n)=A(n)+20; else A(n...

11 years ago | 1

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Is it possible to grow cell matrices???
Cell arrays are essentially an array of pointers to other locations in memory where the actual data is held. Consequently, you ...

11 years ago | 0

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How do I know the method working behind ode15i?
Not sure if you have access, but... <http://www.degruyter.com/view/j/jnma.2002.10.issue-4/jnma.2002.291/jnma.2002.291.xml?fo...

11 years ago | 0

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Reading an Image after using load command
The same way you saved them: for k = 1:10 A = X(:,:,k); % do something with A end (Also, move the |save| co...

11 years ago | 0

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numeric solve issue for an equation involving a logarithm
Didn't see your comment with your code. This works: imax = (n/2)-2; r = zeros(imax,1); syms b for i = 2:imax; ...

11 years ago | 1

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numeric solve issue for an equation involving a logarithm
If I understand your intent correctly, you're trying to solve the equation r_i = (Log10(b) + b)/2 for b, given a (numeric?...

11 years ago | 1

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Problem applying fminsearch to piecewise numerical solution genereated by ode45
It looks like you're on the right track. I'm a little suspicious of the use of the variable name |fminsearch| in |sim3Cmdb| a...

11 years ago | 0

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How can I create a datetick using if statements?
Do you actually want to create a variable that has two states or is this just about how you visualize a time series? If it's th...

11 years ago | 0

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