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Thomas


Stockholm University

Last seen: 7 mesi fa Attivo dal 2012

Professional Interests: TEM, Image analysis, EELS, Spectral Imaging, Photography

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Domanda


Shuffle method on custom datastore written for a single binary file
I am writing a custom datastore and am seeking some assistance. My datasets consist of stacks of 2D images (frames) stored sequ...

circa 3 anni fa | 0 risposte | 0

0

risposte

Domanda


Visualizing image deformation (object shrinkage)
I have two images of the same, complex object taken at two different times. The object has shrunk between images and I need to ...

oltre 3 anni fa | 1 risposta | 0

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risposta

Domanda


Smooth interpolation for warping an image using a deformation map
I have a series of 2D images that I need to register similar to the one below. The registration is neither geometric nor ri...

circa 5 anni fa | 0 risposte | 0

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risposte

Risolto


We love vectorized solutions. Problem 1 : remove the row average.
Given a 2-d matrix, remove the row average from each row. Your solution MUST be vectorized. The solution will be tested for ac...

quasi 7 anni fa

Risolto


Matrix indexing with two vectors of indices
Given a matrix M and two index vectors a and b, return a row vector x where x(i) = M(a(i),b(i)).

quasi 7 anni fa

Risolto


Getting logical indexes
This is a basic MATLAB operation. It is for instructional purposes. --- Logical indexing works like this. thresh = 4...

quasi 7 anni fa

Risolto


Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.

quasi 7 anni fa

Risolto


Return elements unique to either input
Given two numeric inputs a and b, return a row vector that contains the numbers found in only a or only b, but not both. For ex...

quasi 7 anni fa

Risolto


Replicate elements in vectors
Replicate each element of a row vector (with NaN) a constant number of times. Examples : n=2, A=[1 2 3] -> [1 1 2 2 3 3] n=0...

quasi 7 anni fa

Risolto


Set the array elements whose value is 13 to 0
Input A either an array or a vector (which can be empty) Output B will be the same size as A . All elements of A equal to 13...

quasi 7 anni fa

Risolto


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

quasi 7 anni fa

Risolto


Check if number exists in vector
Return 1 if number _a_ exists in vector _b_ otherwise return 0. a = 3; b = [1,2,4]; Returns 0. a = 3; b = [1,...

quasi 7 anni fa

Risolto


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...

quasi 7 anni fa

Risolto


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...

quasi 7 anni fa

Risolto


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. Examp...

quasi 7 anni fa

Risolto


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 ...

quasi 7 anni fa

Risolto


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 ...

quasi 7 anni fa

Risolto


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...

quasi 7 anni fa

Risolto


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

quasi 7 anni fa

Risolto


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

quasi 7 anni fa

Risolto


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

quasi 7 anni fa

Risolto


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

quasi 7 anni fa

Risolto


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 ...

quasi 7 anni fa

Risolto


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:...

quasi 7 anni fa

Risposto
Use griddedinterpolant to interpolate over missing values
Both of the suggestions by Walter and Guillaume worked very well for me. If I choose to use the exact syntax I suggested above,...

circa 7 anni fa | 1

Domanda


Use griddedinterpolant to interpolate over missing values
I would like to use griddedInterpolant to interpolate over datapoints that I need to discard from an N-dimensional matrix. Spec...

circa 7 anni fa | 3 risposte | 0

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Risolto


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 7 anni fa

Risposto
How can I insert the *contents* of a string variable directly into my code?
This solution worked very well for me, thanks! I had to make one minor modification. I should enclose the string in double quo...

oltre 7 anni fa | 0

Domanda


How can I insert the *contents* of a string variable directly into my code?
I am working with git version control and would like to use the following function to commit my changes: function gitCommit...

oltre 7 anni fa | 3 risposte | 0

3

risposte

Domanda


Improving the consistency of the NNMF function
I'm attempting to use non-negative matrix factorization on a matrix containing spectral information (A). Whenever I run the nnm...

oltre 9 anni fa | 1 risposta | 0

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