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Solved

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...

3 years ago

Solved

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 ...

3 years ago

Solved

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...

3 years ago

Solved

Calculate Inner Product

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

3 years ago

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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 ...

3 years ago

Solved

Find the Best Hotels

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

3 years ago

Solved

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...

3 years ago

Solved

Calculate BMI

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

3 years ago

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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...

3 years ago

Solved

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| ...

4 years ago

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Solve a System of Linear Equations

*Example*: If a system of linear equations in _x₁_ and _x₂_ is: 2 _x₁_ + _x₂_ = 2 _x₁...

4 years ago

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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,....

4 years ago

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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...

4 years ago

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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...

4 years ago

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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...

4 years ago

Solved

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:...

4 years ago

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...

5 years ago | 1

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...

5 years ago | 2

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:...

7 years ago | 0

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);...

8 years ago | 1

| accepted

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...

8 years ago | 1

| accepted

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...

11 years ago | 1

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...

11 years ago | 5

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...

11 years ago | 1

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...

11 years ago | 0

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...

11 years ago | 0

Doubts in setting matlab path

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

11 years ago | 1

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...

11 years ago | 1

| accepted

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...

11 years ago | 0

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...

11 years ago | 0

| accepted