# Fredrik P

### Stockholm University

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Question

Strange core usage when running Slurm jobs

I'm trying to run jobs on an HPC cluster using Slurm, but I run into problems both when I'm running interactive jobs and when I'...

4 months ago | 1 answer | 0

### 1

answerQuestion

How many workers for fmincon with UseParallel?

I'm solving a biggish problem where the function takes a while to compute and want to throw as many workers as possible on the p...

5 months ago | 1 answer | 0

### 1

answerQuestion

From what MATLAB version can max() return linear indices?

max() can return linear indices, but when was this capability introduced? I can't seem to find it in the version history.

6 months ago | 1 answer | 0

### 1

answerQuestion

How could this code be vectorized?

How can I vectorize this code? I suspect that it can be solve using ndgrid and sub2ind as my last question was. But I just don't...

6 months ago | 2 answers | 0

### 2

answersQuestion

How can I speed up this function? #vectorize

I'm struggling to speed up the code inside the version1 function. The only way to vectorize it that I can seem to figure out is ...

6 months ago | 2 answers | 0

### 2

answersQuestion

Compute conditional mean from distribution

How do I compute a conditional mean of a distribution in Matlab (e.g. between the 1st and 5th percentiles)? Right now, I am thin...

8 months ago | 3 answers | 0

### 3

answersHow to fit a curve with negative powers of x

For the benefit of posterity: x = 1:20; y = 5 - x.^(-1); p = polyfit(1 ./ x, y, 1); yhat = polyval(p, 1 ./ (1:30)); fig...

1 year ago | 2

Question

Create large array of zeros without MATLAB:array:SizeLimitExceeded (perhaps on disc)

I want to create a rather large array of zeros, but run into a `MATLAB:array:SizeLimitExceeded` error as the generated array is ...

2 years ago | 1 answer | 0

### 1

answerQuestion

Locate index and weights for linear interpolation for a monotonically increasing vector

I have a performance critical function that amounts to finding all that is needed to interpolate a point (or a vector of points)...

2 years ago | 1 answer | 0

### 1

answerQuestion

Matlab crashes when using py.matplotlib.pyplot.plot()

I want to use Python's matplotlib in Matlab but I can't make even this simple example close; clear; clc; x = py.numpy.arange(2...

4 years ago | 1 answer | 0

### 1

answerQuestion

Vertical alignment of OpenType font

I have tried to use the font Fira Sans in my figures but fail to use its OpenType version in Matlab R2019a on Windows 10. My MWE...

4 years ago | 1 answer | 0

### 1

answerQuestion

List of built-in functions?

Is there somewhere a list of Matlab’s built-in functions like |histc| that are not written in Matlab own scripting language? Tha...

4 years ago | 2 answers | 1

### 2

answersQuestion

Faster finding of 1D linear interpolation nodes and weights for each element in ND matrix

In a problem I'm working on now, I compute some values in a matrix x and I then for each element in x need to find the index of ...

4 years ago | 0 answers | 0

### 0

answersSorting 2D matrix and retaining nodes in triangle groups

See answer on Stack Overflow.

4 years ago | 0

| accepted

Question

Sorting 2D matrix and retaining nodes in triangle groups

I am trying to optimize a script (below) that finds the bounding boxes to functional values of all lower left triangles in a 2D ...

5 years ago | 1 answer | 0

### 1

answerQuestion

"Reshaping" matrix

I have a matrix P_ind that is AxB (where each element is an integer in the range 1:C) and a matrix xgrid that is CxDxB. Is there...

8 years ago | 3 answers | 0