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Thomas


Stockholm University

Last seen: 7 Tage vor |  Aktiv seit 2012

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

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Frage


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...

etwa 4 Jahre vor | 1 Antwort | 0

1

Antwort

Frage


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 ...

mehr als 4 Jahre vor | 1 Antwort | 0

1

Antwort

Frage


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...

fast 6 Jahre vor | 0 Antworten | 0

0

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Gelöst


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...

fast 8 Jahre vor

Gelöst


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)).

fast 8 Jahre vor

Gelöst


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

fast 8 Jahre vor

Gelöst


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.

fast 8 Jahre vor

Gelöst


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...

fast 8 Jahre vor

Gelöst


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...

fast 8 Jahre vor

Gelöst


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...

fast 8 Jahre vor

Gelöst


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...

fast 8 Jahre vor

Gelöst


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,...

fast 8 Jahre vor

Gelöst


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...

fast 8 Jahre vor

Gelöst


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...

fast 8 Jahre vor

Gelöst


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...

fast 8 Jahre vor

Gelöst


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 ...

fast 8 Jahre vor

Gelöst


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 ...

fast 8 Jahre vor

Gelöst


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...

fast 8 Jahre vor

Gelöst


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

fast 8 Jahre vor

Gelöst


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

fast 8 Jahre vor

Gelöst


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

fast 8 Jahre vor

Gelöst


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

fast 8 Jahre vor

Gelöst


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 ...

fast 8 Jahre vor

Gelöst


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:...

fast 8 Jahre vor

Beantwortet
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,...

fast 8 Jahre vor | 1

Frage


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...

fast 8 Jahre vor | 3 Antworten | 0

3

Antworten

Gelöst


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...

etwa 8 Jahre vor

Beantwortet
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...

etwa 8 Jahre vor | 0

Frage


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...

etwa 8 Jahre vor | 3 Antworten | 0

3

Antworten

Frage


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...

etwa 10 Jahre vor | 1 Antwort | 0

1

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