# julian gaviria

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Question

Create 2D mask from nonzero values in 3D array

How can I index cells with nonzero values across all the matrices of a 3D array? Expected output: Logical 2D matrix where 1 rep...

6 månader ago | 2 answers | 0

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answersQuestion

Index and select rows from table

A table includes columns with numerical and categorical columns (see attachement) How can I get multiple subtables based on the...

6 månader ago | 1 answer | 0

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answerQuestion

Dealing with NaNs in corr function (upper/lower triangles of matrices with same dimension)

The correlation coeficients of the upper and lower parts of matrices A,B (see attachment) yield "NaNs nn=374; temp= ~eye (nn);...

7 månader ago | 1 answer | 0

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answerQuestion

Compute correlations in 3D arrays

%Random matrices A=randi(100,374,374); A_ = eye(size(A,[1 2])); A(ones(size(A))&A_)=NaN; B=randi(100,374,374); B_ = eye(s...

7 månader ago | 1 answer | 0

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answerQuestion

Any suggestion to replace the diagonal values of matrices in a 3D array?

Any suggestion to replace the diagonal values of matrices in a 3D array? in case1 to "0" in case1 to "NaN" e.g. for N...

7 månader ago | 1 answer | 0

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answerQuestion

To mirror (i.e, to copy) the upper matrix to the lower half in matrices arranged in 3D

These two lines mirror (i.e, copy) the upper matrix to the lower half in matrix M, and replace the diagonal elements of the sam...

7 månader ago | 1 answer | 0

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answerQuestion

loading multiple csv files using readmatrix

How can I load to matlab workspace multiple matrices with the same dimension located in individual csv files? They have differen...

7 månader ago | 2 answers | 0

### 2

answersQuestion

3D Submatrices extraction by indexing the 3rd dimension

I have a structure array (a_struct) with 2 fields: a_struct.m= 370x690x109 double a_struct.i= 109x1 cell. Each cell contains 1...

7 månader ago | 1 answer | 0

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answerQuestion

identifying entry elements in rows of logical matrix

I want to identifiy the entry elements (i.e., the first "1" value) in the rows of the following logical matrix input_matrix = [...

mer än ett år ago | 2 answers | 0

### 2

answersQuestion

How to find percentage of Similarity between two logical matrices

The following code calculates the percentage of similarity between the attached logical matrices "c1" and "c2": row = 168; col...

mer än ett år ago | 1 answer | 0

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answerChanging specific characters in filenames across subfolders

Thank you @Walter Roberson. I encountered 3 issues in your suggestion: 1. Is not recursive. To recall the data structure: Dire...

mer än ett år ago | 0

Question

Changing specific characters in filenames across subfolders

How can I change the first character "r" by another character "f" in all the filnames from multiple subfolders: Directory folde...

mer än ett år ago | 2 answers | 0

### 2

answersQuestion

Using movefile function in existing and unexisting files

The following use of the "movefile" function works only if the requested files exist. But it yields error messages and stops the...

mer än ett år ago | 1 answer | 0

### 1

answerQuestion

Adding prefix to indexe

Goal: To set the source path for using the "copyfile" function Question: How can I add a prefix to the 7th subloder? this folde...

mer än ett år ago | 2 answers | 0

### 2

answersQuestion

Iterations of copyfile function across files

I have 4 files (S001, S002, S003, S004) in the following path C:\doss1\doss2\doss3\doss4\doss5\ Each file has a subfloder "res...

nästan 2 år ago | 1 answer | 0

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answerQuestion

Issue with length function

Why does the length function never stops the iteration? Context: Using copyfile function (matlab2018b) for copying and pasting...

ungefär 2 år ago | 1 answer | 0