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Amith Kamath

MathWorks

Last seen: presque 3 ans il y a |  Actif depuis 2013

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Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

plus de 3 ans il y a

A résolu


Longest run of consecutive numbers
Given a vector a, find the number(s) that is/are repeated consecutively most often. For example, if you have a = [1 2 2 2 1 ...

presque 4 ans il y a

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Rescale Scores
Each column (except last) of matrix |X| contains students' scores in a course assignment or a test. The last column has a weight...

presque 4 ans il y a

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Calculate Inner Product
Given two input matrices, |x| and |y|, check if their inner dimensions match. * If they match, create an output variable |z|...

presque 4 ans il y a

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Find MPG of Lightest Cars
The file |cars.mat| contains a table named |cars| with variables |Model|, |MPG|, |Horsepower|, |Weight|, and |Acceleration| for ...

presque 4 ans il y a

A résolu


Find the Best Hotels
Given three input variables: * |hotels| - a list of hotel names * |ratings| - their ratings in a city * |cutoff| - the rat...

presque 4 ans il y a

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Crop an Image
A grayscale image is represented as a matrix in MATLAB. Each matrix element represents a pixel in the image. An element value re...

presque 4 ans il y a

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Calculate BMI
Given a matrix |hw| (height and weight) with two columns, calculate BMI using these formulas: * 1 kilogram = 2.2 pounds * 1 ...

presque 4 ans il y a

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Plot Damped Sinusoid
Given two vectors |t| and |y|, make a plot containing a blue ( |b| ) dashed ( |--| ) line of |y| versus |t|. Mark the minimum...

presque 4 ans il y a

A résolu


Calculate a Damped Sinusoid
The equation of a damped sinusoid can be written as |y = A.ⅇ^(-λt)*cos(2πft)| where |A|, |λ|, and |f| ...

environ 4 ans il y a

A résolu


Solve a System of Linear Equations
*Example*: If a system of linear equations in _x&#8321_ and _x&#8322_ is: 2 _x₁_ + _x₂_ = 2 _x₁...

environ 4 ans il y a

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Verify Law of Large Numbers
If a large number of fair N-sided dice are rolled, the average of the simulated rolls is likely to be close to the mean of 1,2,....

environ 4 ans il y a

A résolu


Find the Oldest Person in a Room
Given two input vectors: * |name| - user last names * |age| - corresponding age of the person Return the name of the ol...

environ 4 ans il y a

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Convert from Fahrenheit to Celsius
Given an input vector |F| containing temperature values in Fahrenheit, return an output vector |C| that contains the values in C...

environ 4 ans il y a

A résolu


Calculate Amount of Cake Frosting
Given two input variables |r| and |h|, which stand for the radius and height of a cake, calculate the surface area of the cake y...

environ 4 ans il y a

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Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

environ 4 ans il y a

Réponse apportée
Can't reload 'C:\Program Files\MATLAB\R2018b\bin\win64\ocv.dll' when using detectMSERFeatures, while the Computer Vision Toolbox installed indeed.
This happens due to the unavailability of the Visual C redistributable DLLs, which can be downloaded from here: https://support...

presque 6 ans il y a | 1

Réponse apportée
Can't reload 'C:\Program Files\MATLAB\R2018b\bin\win64\ocv.dll'
This happens due to the unavailability of the Visual C redistributable DLLs, which can be downloaded from here: https://support...

presque 6 ans il y a | 2

Réponse apportée
Does bwboundaries always returned ordered, clockwise, boundaries?
David, Thanks for the detailed question, and sharing the cool demo with us. Here is what the help text for bwboundaries says:...

presque 8 ans il y a | 0

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why imerode and imdilate make matlab stopped every time ?
Alaa: You've probably found a bug in imerode. However, I believe you really meant to do this instead: B = im2bw(i, 0.3);...

plus de 8 ans il y a | 1

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Difference between "Canny" and "Canny_old" in Image Processing toolbox function "edge"
Mazhar: Apologies for such a delayed response. As far as I know, 'canny_old' does not have any relation to the openCV implem...

plus de 8 ans il y a | 1

| A accepté

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How can I change numbers on colorbar?
you can set the CLim (color limits of the bar) using caxis([min, max]). The default value is the min and max of the plotted data...

environ 11 ans il y a | 1

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Which one is best for calculating circularity ?
I would do one of the following: 1. Use the 'solidity' option in REGIONPROPS to estimate how 'curvy' the blob is, and solidit...

environ 11 ans il y a | 5

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how otsu multithresh works?
From <http://en.wikipedia.org/wiki/Otsu%27s_method>, the algorithm assumes that the image to be thresholded contains two classes...

environ 11 ans il y a | 1

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CT spine saggital image
Assuming your data has at least 3 dimensions, you only need to index it correctly so as to get a 2D matrix for displaying. For t...

environ 11 ans il y a | 0

Réponse apportée
how i measure a threshold value to use it in a wavelet_based image segmentation ?
If you are looking at segmentation in general, and tuning parameters to do so, I would recommend using <http://www.mathworks.com...

environ 11 ans il y a | 0

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Doubts in setting matlab path
<http://www.mathworks.com/help/matlab/matlab_prog/function-precedence-order.html> answers your question exactly. I believe MATLA...

environ 11 ans il y a | 1

Réponse apportée
IMWRITE followed by IMREAD Changes Pixel Values
I tried this, and I realized that ISEQUAL compares a DOUBLE and UINT8, which quite obviously does not return true. p = ran...

environ 11 ans il y a | 1

| A accepté

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Sobel filter with slider (GUI).
<http://homepages.inf.ed.ac.uk/rbf/HIPR2/sobel.htm> is a good introduction to the Sobel filter. It is essentially a Laplacian of...

environ 11 ans il y a | 0

Réponse apportée
How can i read and show multiple DICOM images of CT in GUI MATLAB
<http://www.mathworks.com/matlabcentral/fileexchange/29344-read-medical-data-3d> may be useful, however, I have not tried it yet...

environ 11 ans il y a | 0

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