Answered

my program not work

One problem is that you define n as a vector of values. When you then plug it into an and bn, it is trying to do matrix multipli...

my program not work

One problem is that you define n as a vector of values. When you then plug it into an and bn, it is trying to do matrix multipli...

6 years ago | 0

Answered

Segment nodes in an image

See if this example helps: <http://www.mathworks.com/help/images/examples/measuring-angle-of-intersection.html Measuring Angle o...

Segment nodes in an image

See if this example helps: <http://www.mathworks.com/help/images/examples/measuring-angle-of-intersection.html Measuring Angle o...

6 years ago | 0

Answered

I want to save an array which change its size at each iteration in a loop so that I can plot later on

Hi, you can do a few things: * Use |<http://www.mathworks.com/help/matlab/ref/save.html SAVE>| and |<http://www.mathworks.com...

I want to save an array which change its size at each iteration in a loop so that I can plot later on

Hi, you can do a few things: * Use |<http://www.mathworks.com/help/matlab/ref/save.html SAVE>| and |<http://www.mathworks.com...

6 years ago | 0

Answered

The command is working perfectly in the command window but not as a script

Just to close the loop on this, the bottom line is that MATLAB file names, just like MATLAB variable or function names, can only...

The command is working perfectly in the command window but not as a script

Just to close the loop on this, the bottom line is that MATLAB file names, just like MATLAB variable or function names, can only...

6 years ago | 1

Answered

Creating indivdual column vectors based off a location vector

Hi, here's a way to do it using <http://www.mathworks.com/help/matlab/ref/arrayfun.html ARRAYFUN>: initialIndices = locat...

Creating indivdual column vectors based off a location vector

Hi, here's a way to do it using <http://www.mathworks.com/help/matlab/ref/arrayfun.html ARRAYFUN>: initialIndices = locat...

6 years ago | 0

Answered

How can I compute numerical integration from a multivariate function ( f(t,C) ) where C'=[c_1,c_2,...,c_m] with respect to " t "

Hi - a few things: * |<http://www.mathworks.com/help/symbolic/int.html INT>| is a Symbolic Math Toolbox command, so it will t...

How can I compute numerical integration from a multivariate function ( f(t,C) ) where C'=[c_1,c_2,...,c_m] with respect to " t "

Hi - a few things: * |<http://www.mathworks.com/help/symbolic/int.html INT>| is a Symbolic Math Toolbox command, so it will t...

6 years ago | 0

Answered

How can I average multiple matrices by element, ignoring NaN values, to create a new matrix of the same size?

Hi, if you have Statistics Toolbox, you can use |nanmean| as follows: matrixA = [2 3 5 ; 3 NaN 1 ; 2 4 3]; matrixB =...

How can I average multiple matrices by element, ignoring NaN values, to create a new matrix of the same size?

Hi, if you have Statistics Toolbox, you can use |nanmean| as follows: matrixA = [2 3 5 ; 3 NaN 1 ; 2 4 3]; matrixB =...

6 years ago | 3

| accepted

Answered

A question regarding matrices

Here's another option using TEXTSCAN. Note also the illustration of SPARSE and FULL at the end of the code. The main difficulty ...

A question regarding matrices

Here's another option using TEXTSCAN. Note also the illustration of SPARSE and FULL at the end of the code. The main difficulty ...

6 years ago | 0

Answered

Mouse Down Function doesn't work

Hi, When you are clicking on the picture, you are actually hitting the "image" object created by imshow, and not the axes "ax...

Mouse Down Function doesn't work

Hi, When you are clicking on the picture, you are actually hitting the "image" object created by imshow, and not the axes "ax...

6 years ago | 4

| accepted

Answered

How to show a 4 Dimensional Plot

The following links talk about animating graphics in MATLAB: * <http://www.mathworks.com/help/matlab/creating_plots/animation...

How to show a 4 Dimensional Plot

The following links talk about animating graphics in MATLAB: * <http://www.mathworks.com/help/matlab/creating_plots/animation...

6 years ago | 0

| accepted

Solved

Remove any row in which a NaN appears

Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

7 years ago

Solved

Finding Perfect Squares

Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

7 years ago

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Weighted average

Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

7 years ago

Solved

Create times-tables

At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...

7 years ago

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Fibonacci sequence

Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

7 years ago

Solved

Pizza!

Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

7 years ago

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Determine whether a vector is monotonically increasing

Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

7 years ago

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Swap the first and last columns

Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

7 years ago

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Make a checkerboard matrix

Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Example...

7 years ago

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Find all elements less than 0 or greater than 10 and replace them with NaN

Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

7 years ago

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Triangle Numbers

Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

7 years ago

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Column Removal

Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

7 years ago

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Select every other element of a vector

Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

7 years ago

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Determine if input is odd

Given the input n, return true if n is odd or false if n is even.

7 years ago

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Find the sum of all the numbers of the input vector

Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

7 years ago

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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...

7 years ago

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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:...

7 years ago