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Nathan Greco


Attivo dal 2011

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Risolto


Basic arrays operations.
Apply element-by-element binary operation 'fun' to two arrays (A and B).

oltre 7 anni fa

Risolto


Deleting an element in a matrix
For vector Grades=[98 56 78 34 100 88 87], delete the number 78 to get the following matrix Grades=[98 56 34 100 88 87] **re...

oltre 7 anni fa

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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...

oltre 7 anni fa

Risolto


Most nonzero elements in row
Given the matrix a, return the index r of the row with the most nonzero elements. Assume there will always be exactly one row th...

circa 8 anni fa

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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...

circa 8 anni fa

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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...

circa 8 anni fa

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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:...

circa 8 anni fa

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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...

circa 12 anni fa

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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...

circa 12 anni fa

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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...

circa 12 anni fa

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

circa 12 anni fa

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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...

circa 12 anni fa

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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...

circa 12 anni fa

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Is my wife right?
Regardless of input, output the string 'yes'.

circa 12 anni fa

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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 ...

circa 12 anni fa

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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.

circa 12 anni fa

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Add two numbers
Given a and b, return the sum a+b in c.

circa 12 anni fa

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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 ...

oltre 12 anni fa

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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...

oltre 12 anni fa

Risposto
for loop
The only thing that doesn't look right to me is where you have elseif size(qq)==[1,#] / size(qq)==[1,#+1] Where # is 6...

oltre 12 anni fa | 0

Risposto
Store fllepath in variable
Yes. Just store it as a string. filepath = 'C:\Users\ecorbett\Documents\MATLAB\Labelers\fred'; filename = 'text.csv'; ...

oltre 13 anni fa | 1

| accettato

Risposto
Determining Host ID
Does this help? http://www.mathworks.com/support/solutions/en/data/1-171PI/

oltre 13 anni fa | 0

Risposto
How do I access and modify only the non diagonal entries in a matrix?
If tmp is your matrix, try: tmp-diag(diag(tmp)) %works only with square matrices OR triu(tmp,1)+tril(tmp,-1) Both of...

oltre 13 anni fa | 0

Risposto
How did you learn MATLAB?
I started Matlab by being thrown into it through my internship at Sandia Natl. Labs two years ago. I learned how to program in M...

oltre 13 anni fa | 0

Risposto
Changing the names of text files in a directory
Maybe this will do? (Run this under your NAIC directory.) Assuming you are on a windows machine: files = dir('*.txt.*'); na...

oltre 13 anni fa | 1

Risposto
Nested loop problem !
Will this do what you are looking for: *EDIT:* a(:,3:end) = b(:,1:end-2); OR, if you really wanted a for loop: d = ...

oltre 13 anni fa | 1

| accettato

Risposto
Finding diag of two cells
Does this work for you? diag(cell2mat([a b])) Note that the solution is the same as: diag([a{1} a{2}]) To get the di...

oltre 13 anni fa | 0

Risposto
changes of data
You would not be able to use a matrix, as matrices can only contain the same data types (all numerical or all character arrays) ...

oltre 13 anni fa | 0

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Risposto
Marking where one clicked with ginput
I did something similar to this when measuring diameters of soot particles. I would frequently get lost as to where I last click...

oltre 13 anni fa | 1

| accettato

Risposto
Control Break Processing
Here's a dirty method, but no handwritten loops as requested. Assume tmp contains your 22x3 cell array of data (the 4th column ...

oltre 13 anni fa | 0

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