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# Patrick

### City College of New York

Active since 2013

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Question

Easy? How can I remove data below or above a certain value?
I have a long vector, with values between 0 and 10,000. I'd like to separate this into three new vectors: one containing only th...

circa 8 anni ago | 1 answer | 0

### 1

Question

How can I call sequential variables from my workspace?
This is something that, had I learned how to do it, could have saved me a ton of time over the last few months. I have a long li...

circa 8 anni ago | 1 answer | 0

### 1

How can I center a dataset with NaN values in it?
As a different approach, I used: nanmean(ARRAY4c) to find the mean of the positive data, and centered it around that.

circa 8 anni ago | 0

| accepted

Question

How can I center a dataset with NaN values in it?
I know this sounds like an easy question. Really, it is. I've even asked some form of this question before. But, I have run into...

circa 8 anni ago | 1 answer | 0

### 1

Question

How can I create a joint (2D) histogram of two equally-sized datasets?
I have two datasets with about 2.5 million doubles each. I want to create a 2D histogram to see data density. How can I do this?...

circa 8 anni ago | 2 answers | 0

### 2

Question

How can I add many matrices together, end to end?
I am trying to add 348 separate 72x144 matrices NOT by element, but rather to create one matrix of size 72x50112 (50112 is 144x3...

circa 8 anni ago | 1 answer | 0

### 1

Question

How can I load a set of files ordered by date and time?
I know there is a loop that can be written to do this. I have many files ordered by time and date that I would like to load. The...

circa 8 anni ago | 1 answer | 0

### 1

Question

How can I make a vector from the elements in the same position across many matrices?
I have 736 matrices of size 72x144. I want to find a vector of 736x1, where each element of the new vector represents the elemen...

circa 8 anni ago | 1 answer | 0

### 1

Question

How can I center a matrix containing NaN values?
I have a matrix of size 72x144. It contains many NaN values, but also contains numeric values. I have been successful in the pas...

circa 8 anni ago | 1 answer | 0

### 1

Question

How can I perform a K-means cluster analysis of the data inside a cell array?
I have a cell array - 10368 cells with two values each. I would like to perform a K-means cluster analysis of this data, but eve...

circa 8 anni ago | 1 answer | 0

### 1

Question

How can I split two side-by-side vectors into many individual vector pairs?
I have several 10368x1 vectors, of which each of the 10368 pieces represents a value at a different location on a map. I would l...

circa 8 anni ago | 1 answer | 0

### 1

Question

How can I average multiple matrices by element, ignoring NaN values, to create a new matrix of the same size?
I have 248 matrices, each of size 72x144. There are some NaN values inserted randomly here and there in these matrices. I would ...

oltre 8 anni ago | 2 answers | 0

### 2

Question

I have 366 matrices of size 72x144. How can I create a 367th matrix, also size 72x144, which represents the average by element of the original?
I asked a similar question last night, but didn't get an answer I understood. To be more specific, I have 366 matrices, each siz...

oltre 8 anni ago | 2 answers | 0