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Do you think that MATLAB is expensive?
I think the US$90 that I paid for the student edition was a steal, though I never used it. Within three months I became a resea...

15 years ago | 0

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using polyval(a,x)
It doesn't fzero(@(x)6*x^3+4*x^2-5/12*x^3-7*x^2+3*x+8.2892,pi)

15 years ago | 0

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Matrix Indices Problem
[junk, idx] = max(logical(A),[],2) idx will be you index vector.

15 years ago | 2

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title that spans subplots
How about with super title! doc suptitle What it looks like: <<http://i.imgur.com/gvSGs.png>>

15 years ago | 9

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How do I extract columns from multiple photographs and stitch them together?
First you have to get the images in to MATLAB. <http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F FA...

15 years ago | 0

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Calculate means of multiple matrices
<http://matlab.wikia.com/wiki/FAQ#How_can_I_create_variables_A1.2C_A2.2C....2CA10_in_a_loop.3F FAQ4.6> To get you started ...

15 years ago | 0

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quiver plot - arrow
Like with doc annotation doc text ? There are quite a few quiver tools on the FEX. It looks like |quiverS| might be...

15 years ago | 1

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Deleting a row or column of a matrix
u = y(1:20,1:20);

15 years ago | 2

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Cartesian to Polar
<http://www.mathworks.com/matlabcentral/fileexchange/30864-3d-rotation-about-shifted-axis FEX:AxelRot> I think this might b...

15 years ago | 0

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physionet database
Move it to the MATLAB folder in your documents or, from MATLAB, go to that folder and click "Add selected folder and subfolders ...

15 years ago | 0

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Detect multiple circles of various radii in complex, noisy, grayscale image
<<http://i.imgur.com/GBbJl.png>> I'm just posting this as an answer so I can include the image. Please clarify: Are all of the...

15 years ago | 0

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how can i solve this problem about 'OUT OF MEMORY'
Buy more RAM and upgrade to a 64bit system. CT scans, by nature, require a lot of memory. Also, you could convert to integers ...

15 years ago | 0

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Calculating Satellite Positions(Error msg: ??? Subscripted assignment dimension mismatch.)
dbstop if error run your program, it'll take you the line of the error. When it gets there, evaluate the right-hand-side t...

15 years ago | 0

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Answered
a matematical problem with matrix inversion
U = magic(4); %sample data U = U(:,1:3); %non-square it U'*(( U * U')\U) %see what happens: ans = 1 -9.714...

15 years ago | 0

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Create a popup menu based on dynamic data
Where is the string stored? Is it in an edit box? inside the callback: S = get(handles.text_box_of_choice,'string'); ...

15 years ago | 1

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How to figure out the number of objects in a workspace?
a=whos; nObj = size({a(:).size},2); clear a; %to keep the same number of objects; also assuming a _wasn't_ a variable befo...

15 years ago | 0

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how to form color 3D image
Please give an example of what you mean: % red cameraman I = imread('cameraman.tif'); I = cat(3,I,zeros(size(I,1),size(...

15 years ago | 1

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divide equal parts of a time series into a new matrix
So: [val idx] = min(reshape(A,3,[])); %each val is the respective minimum idx = idx+(0:3:(3*length(idx)-1)); %original co...

15 years ago | 0

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3D plot with uncertainties
So maybe a variation of: doc streamtube doc streamribbon ?

15 years ago | 0

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Very simple simultaneous eqs.
doc subs %substitute numerical values doc double %convert symbolic to double precision

15 years ago | 0

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Ordered connected components
Use |regionprops| on the CC struct with the 'PixelList' option. That will return row/columns. Then use |sortrows| on that to f...

15 years ago | 0

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dilatasi erosi ..... what it is?
They're a special form of convolution.

15 years ago | 0

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How to embed in a post a nitid image
The image looks the same (good quality) to me in both places. Also, on Mac w/ firefox, when I do the zoom in by holding one fin...

15 years ago | 0

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extracting sub matrix - time consuming
* Use |bsxfun| instead of |ndgrid|, it'll skip the expansions. * Do xc,yc and sigma change? If not, calculate them being mul...

15 years ago | 0

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The report must include at least the following: 1. Chapter 1- Application of AI techniques in power system (1000 words). [10%] 2. Chapter 2- Economic Dispatch (1000 words). [10%] 3. Chapter 3- Particle Swarm Optimisation (1000 words) [10%] 4. Chapter
Second best question ever after <http://www.mathworks.com/matlabcentral/answers/4843-plz-give-me-ful-program "plz give me ful pr...

15 years ago | 1

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Memory pig?? Problem with kron function
Can't you just open the task manager and look at what's using what? Close the program using the most memory... 300Mb of RAM is...

15 years ago | 1

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if/for loop problem
perhaps you're looking for |break| or |return| doc break doc return ?

15 years ago | 0

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Calculating Stream Depletion using changing pumping rates over time
<http://matlab.wikia.com/wiki/FAQ#How_can_I_create_variables_A1.2C_A2.2C....2CA10_in_a_loop.3F FAQ4.6> rethink your variable ...

15 years ago | 0

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length of forehead of a person
Or sum(Your_bw_image(forehead_row,:))

15 years ago | 0

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Find minimum value within struct
min(structfun(@min,data)); is significantly faster on my machine. Conversions to and from cells take awhile.

15 years ago | 1