Answered

Construct optimisation constraints vector with anonymous function.

You can also call functions within an anonymous function, e.g., param1 = 6; param2 = 0.5; nlcon = @(x)calculateconstr...

Construct optimisation constraints vector with anonymous function.

You can also call functions within an anonymous function, e.g., param1 = 6; param2 = 0.5; nlcon = @(x)calculateconstr...

meer dan 4 jaar ago | 0

Answered

How to remove the least significant bit of a signed int16

You could use |bitset()| to set the LSB to 0, but they will still be 16-bits in memory. For example: a = [56, 21, 33]; b...

How to remove the least significant bit of a signed int16

You could use |bitset()| to set the LSB to 0, but they will still be 16-bits in memory. For example: a = [56, 21, 33]; b...

meer dan 4 jaar ago | 0

| accepted

Answered

Why does rgb2gray use these weights for the weighted sum?

These values come from the <http://www.itu.int/rec/R-REC-BT.601-7-201103-I/en BT.601> standard for use in colour video encoding,...

Why does rgb2gray use these weights for the weighted sum?

These values come from the <http://www.itu.int/rec/R-REC-BT.601-7-201103-I/en BT.601> standard for use in colour video encoding,...

meer dan 4 jaar ago | 1

Answered

How to select and crop a particular region from the image?

If you have the Image Processing Toolbox, you can use the function <http://www.mathworks.com/help/images/ref/imrect.html |imrect...

How to select and crop a particular region from the image?

If you have the Image Processing Toolbox, you can use the function <http://www.mathworks.com/help/images/ref/imrect.html |imrect...

meer dan 4 jaar ago | 0

| accepted

Answered

HOW TO GET KEY PRESS INSTANCE

The key last pressed in the figure is given by its |CurrentCharacter| property, which can be obtain by: key = get(h_fig, 'C...

HOW TO GET KEY PRESS INSTANCE

The key last pressed in the figure is given by its |CurrentCharacter| property, which can be obtain by: key = get(h_fig, 'C...

meer dan 4 jaar ago | 0

Answered

Is there any way to import back figures that you initially exported from MATLAB?

Unfortunately, your figure was converted to a rasterised image when you pasted it in Microsoft Word - this process is irreversib...

Is there any way to import back figures that you initially exported from MATLAB?

Unfortunately, your figure was converted to a rasterised image when you pasted it in Microsoft Word - this process is irreversib...

meer dan 4 jaar ago | 0

Answered

How to draw orthogonal lines ?

The line between your two points can be described by y = a (x - x1) + b, where a = (y2 - y1)/(x2 - x1) b = y1, ...

How to draw orthogonal lines ?

The line between your two points can be described by y = a (x - x1) + b, where a = (y2 - y1)/(x2 - x1) b = y1, ...

meer dan 4 jaar ago | 0

Answered

For loop with changing matrix

You could use a cell array to store the ages per |j|. For example: B = cell(1, years); for j = 1:years % A is compu...

For loop with changing matrix

You could use a cell array to store the ages per |j|. For example: B = cell(1, years); for j = 1:years % A is compu...

meer dan 4 jaar ago | 0

Answered

What is the difference between double() and im2double() ?

The function double() only converts the specified array to a variable of type double, keeping the same values. The function im2d...

What is the difference between double() and im2double() ?

The function double() only converts the specified array to a variable of type double, keeping the same values. The function im2d...

meer dan 4 jaar ago | 0

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Solved

Area of an Isoceles Triangle

An isosceles triangle has equal sides of length x and a base of length y. Find the area, A, of the triangle. <<http://upload...

ongeveer 5 jaar ago

Solved

Length of a short side

Calculate the length of the short side, a, of a right-angled triangle with hypotenuse of length c, and other short side of lengt...

ongeveer 5 jaar ago

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Length of the hypotenuse

Given short sides of lengths a and b, calculate the length c of the hypotenuse of the right-angled triangle. <<http://upload....

ongeveer 5 jaar ago

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Is this triangle right-angled?

Given three positive numbers a, b, c, where c is the largest number, return *true* if the triangle with sides a, b and c is righ...

ongeveer 5 jaar ago

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Compute a dot product of two vectors x and y

x and y are input vectors, d is a number and contains their dot product

bijna 7 jaar ago

Solved

Read a Soroban Abacus

*Description* The Soroban is the name of the modern Japanese abacus. Information on reading a Soroban can be found <http://we...

bijna 7 jaar ago

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Find the largest value in the 3D matrix

Given a 3D matrix, A, find the largest value. E.g. >> A = 1:9; >> A=reshape(A,[3 1 3]); >> islargest(A) ans = 9

bijna 7 jaar ago

Solved

Flip the main diagonal of a matrix

Given a n x n matrix, M, flip its main diagonal. Example: >> M=magic(5); >> flipDiagonal(M) 9 24 1 ...

bijna 7 jaar ago

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Back to basics 17 - white space

Covering some basic topics I haven't seen elsewhere on Cody. Remove the trailing white spaces from the input variable

bijna 7 jaar ago

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Who knows the last digit of pi?

There is only one man who knows the last digit of pi, who is that man? Give the name of that man, who, by popular believe, can ...

bijna 7 jaar ago

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2 b | ~ 2 b

Given a string input, output true if there are 2 b's in it, false if otherwise Examples: 'Macbeth' -> false 'Publius Cor...

bijna 7 jaar ago

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Back to basics 20 - singleton dimensions

Covering some basic topics I haven't seen elsewhere on Cody. Remove the singleton dimensions from the input variable (e.g. if...

bijna 7 jaar ago

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Determine Whether an array is empty

Input a matrix x, output y is TRUE if x is empty, otherwise FALSE.

bijna 7 jaar ago

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Number of 1s in a binary string

Find the number of 1s in the given binary string. Example. If the input string is '1100101', the output is 4. If the input stri...

bijna 7 jaar ago

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Back to basics 21 - Matrix replicating

Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix, generate an output matrix that consists o...

bijna 7 jaar ago

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Back to basics 7 - Equal NaNs

Covering some basic topics I haven't seen elsewhere on Cody. Given 2 input variables, output true if they are equal, false ot...

bijna 7 jaar ago

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Convert a vector into a number

This is a sub problem related to this problem: <http://www.mathworks.com/matlabcentral/cody/problems/621-cryptomath-addition>...

bijna 7 jaar ago

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Given a window, how many subsets of a vector sum positive

Given a vector: [1 0 -1 3 2 -3 1] and a window of 2, A sliding window would find: 1 + 0 = 1 0 - 1 = -1 ...

bijna 7 jaar ago

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Back to basics 23 - Triangular matrix

Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix, return a matrix with all elements above a...

bijna 7 jaar ago

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Get the length of a given vector

Given a vector x, the output y should equal the length of x.

bijna 7 jaar ago

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Back to basics 9 - Indexed References

Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix and row and column, output the index of th...

bijna 7 jaar ago