Answered

How can I iterate through an array using a for loop?

Given an array of paths: C = {'C:\Users\me\Documents\My Info','C:\Users\me\Documents\My data'}; F = @(p)dir(fullfile(p,'*.xlsx...

How can I iterate through an array using a for loop?

Given an array of paths: C = {'C:\Users\me\Documents\My Info','C:\Users\me\Documents\My data'}; F = @(p)dir(fullfile(p,'*.xlsx...

2 months ago | 0

Answered

Store a script as a function

If you want to call RANDOMSTART from e.g. another function or from the command line then it must be a function. What you have is...

Store a script as a function

If you want to call RANDOMSTART from e.g. another function or from the command line then it must be a function. What you have is...

2 months ago | 0

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Answered

Collect information of a file with the same kind of text pattern

txt = fileread('file.txt'); rgx = 'Cr(\d+)\s*Cr(\d+)\s*\(\s*(\S+),\s*(\S+),\s*(\S+)\).+@.*\n.+\n.+\n[^:]*:\s*\(\s*(\S+)\s+(\S+)...

Collect information of a file with the same kind of text pattern

txt = fileread('file.txt'); rgx = 'Cr(\d+)\s*Cr(\d+)\s*\(\s*(\S+),\s*(\S+),\s*(\S+)\).+@.*\n.+\n.+\n[^:]*:\s*\(\s*(\S+)\s+(\S+)...

2 months ago | 2

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Answered

I am getting "Conversion to logical from table is not possible." error, how do you solve it?

"How can I solve this problem?" Use the correct indexing: c0 = Table(ind_coeff,2); % what you are doing: return another table ...

I am getting "Conversion to logical from table is not possible." error, how do you solve it?

"How can I solve this problem?" Use the correct indexing: c0 = Table(ind_coeff,2); % what you are doing: return another table ...

2 months ago | 0

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Answered

Importing files in bulk chnages table columns to NaNs

Avoid the inner loop: T = load('T.mat').T if width(T)>=37 V = str2double(string(T{:,37})); V(isnan(V)) = 0; T =...

Importing files in bulk chnages table columns to NaNs

Avoid the inner loop: T = load('T.mat').T if width(T)>=37 V = str2double(string(T{:,37})); V(isnan(V)) = 0; T =...

2 months ago | 0

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Answered

order using first column in array cell

The basic problem is that you are storing scalar strings in a cell array. This should be avoided: "If you create variables that ...

order using first column in array cell

The basic problem is that you are storing scalar strings in a cell array. This should be avoided: "If you create variables that ...

2 months ago | 0

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Answered

Extract two floating point numbers from a string

T = '23.047°S 67.782°W 9.876°N 5.432°E' ; V = sscanf(regexprep(T,{'(\S+)°[SW]','(\S+)°[NE]'},{'-$1','+$1'}),'%f')

Extract two floating point numbers from a string

T = '23.047°S 67.782°W 9.876°N 5.432°E' ; V = sscanf(regexprep(T,{'(\S+)°[SW]','(\S+)°[NE]'},{'-$1','+$1'}),'%f')

2 months ago | 1

Answered

Parse csv with complex numbers written by Python numpy

Forget about fiddling about with strings. Define the parentheses as delimiters and import as numeric: format short G M = readm...

Parse csv with complex numbers written by Python numpy

Forget about fiddling about with strings. Define the parentheses as delimiters and import as numeric: format short G M = readm...

2 months ago | 0

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Answered

Taking outer product of two matrices

"However, the ⊗ operator between ∇ and u isn't the simple multiplication operator *." The Wikipedia page you linked to states "...

Taking outer product of two matrices

"However, the ⊗ operator between ∇ and u isn't the simple multiplication operator *." The Wikipedia page you linked to states "...

2 months ago | 0

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Answered

Not enough input arguments

"I am a little perplexed by this warning from matlab: "Not enough input arguments" for my following code" Lets take a look at h...

Not enough input arguments

"I am a little perplexed by this warning from matlab: "Not enough input arguments" for my following code" Lets take a look at h...

2 months ago | 0

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Answered

why does it change the number when using VPA?

"why does it change the number when using VPA?" It doesn't. That "loss of digits" is completely unrelated to VPA. The change o...

why does it change the number when using VPA?

"why does it change the number when using VPA?" It doesn't. That "loss of digits" is completely unrelated to VPA. The change o...

2 months ago | 2

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Answered

How can I use the data of a set of matrices labelled in order

"Thank you also for pointing about about dynamic variables, but as a beginner I am lacking options." You decided to use LOAD, s...

How can I use the data of a set of matrices labelled in order

"Thank you also for pointing about about dynamic variables, but as a beginner I am lacking options." You decided to use LOAD, s...

2 months ago | 0

Answered

i have a csv with data separated with commas and columns also are separated with commas

T = fileread('piloto.csv') T = regexprep(T,',(\d+e)','\.$1') % you could also save this to a proper CSV file C = textscan(T,''...

i have a csv with data separated with commas and columns also are separated with commas

T = fileread('piloto.csv') T = regexprep(T,',(\d+e)','\.$1') % you could also save this to a proper CSV file C = textscan(T,''...

2 months ago | 0

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Answered

extract multiple slices of difference sizes from a vector

The MATLAB approach: A = [1 4 6 5 4 8 7 8 6 4]; N = [2 3 5]; C = mat2cell(A,1,N); Checking: C{:}

extract multiple slices of difference sizes from a vector

The MATLAB approach: A = [1 4 6 5 4 8 7 8 6 4]; N = [2 3 5]; C = mat2cell(A,1,N); Checking: C{:}

2 months ago | 0

Answered

How to read lines from cell

S = readlines('T04102.txt'); X = find(startsWith(S,'PID 01')); F = @(x) regexp(S(x:x+3),'[01]{4}\s+[01]{4}','once','match'); ...

How to read lines from cell

S = readlines('T04102.txt'); X = find(startsWith(S,'PID 01')); F = @(x) regexp(S(x:x+3),'[01]{4}\s+[01]{4}','once','match'); ...

2 months ago | 0

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Answered

Why is str2num not recommended when it is faster in certain circumstances?

"Why is str2num not recommended when it is faster in certain circumstances?" Because it relies on EVAL. Code called by EVAL is ...

Why is str2num not recommended when it is faster in certain circumstances?

"Why is str2num not recommended when it is faster in certain circumstances?" Because it relies on EVAL. Code called by EVAL is ...

3 months ago | 0

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Answered

Function input argument block - defining multiple valid classes for input data.

"I'd like to consolidate these two functions into one function so I do not have the need for multiple files." You do not need m...

Function input argument block - defining multiple valid classes for input data.

"I'd like to consolidate these two functions into one function so I do not have the need for multiple files." You do not need m...

3 months ago | 1

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Answered

How to read an excel /csv files with columns that have both text and numbers?

fnm = 'sample.csv'; tmp = readcell(fnm, 'Delimiter',','); idx = cellfun(@ischar,tmp(:,1)); assert(all(diff(idx)<1)) nhl = nn...

How to read an excel /csv files with columns that have both text and numbers?

fnm = 'sample.csv'; tmp = readcell(fnm, 'Delimiter',','); idx = cellfun(@ischar,tmp(:,1)); assert(all(diff(idx)<1)) nhl = nn...

3 months ago | 0

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Answered

Vectorization for Two Nested for-loops

Without creating multiple copies of data in memory: A = [2 3 4; 5 2 1; 1 4 3]; B = [3 4 4; 4 2 1; 4 4 1]; C = sum(permute(A,[...

Vectorization for Two Nested for-loops

Without creating multiple copies of data in memory: A = [2 3 4; 5 2 1; 1 4 3]; B = [3 4 4; 4 2 1; 4 4 1]; C = sum(permute(A,[...

3 months ago | 0

Answered

How can.struct data be made available to non-MATLAB users?

"Can a .struct with nested structs, using a multitude of fieldnames and datalines, be converted to a non-MATLAB format like exce...

How can.struct data be made available to non-MATLAB users?

"Can a .struct with nested structs, using a multitude of fieldnames and datalines, be converted to a non-MATLAB format like exce...

3 months ago | 1

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Answered

Accessing cell array entries using arrays

B = [1,2,2,1,1; 2,1,2,1,2]; V = 1:size(B,2); A = accumarray(B.',V(:),[],@(m){m.'}) A{1,2}

Accessing cell array entries using arrays

B = [1,2,2,1,1; 2,1,2,1,2]; V = 1:size(B,2); A = accumarray(B.',V(:),[],@(m){m.'}) A{1,2}

3 months ago | 0

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Answered

Insufficient number of outputs from right hand side of equal sign to satisfy assignment.

Note that the meaning of square brackets is different in the LHS vs on the RHS. C = num2cell(b1); [app.Sis.Slippage]...

Insufficient number of outputs from right hand side of equal sign to satisfy assignment.

Note that the meaning of square brackets is different in the LHS vs on the RHS. C = num2cell(b1); [app.Sis.Slippage]...

3 months ago | 0

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Answered

Saving a Structured Array (containing plot parameters) to a mat file

Explanation: your structure is not scalar: it has nlines elements. The -struct option only works with scalar structures. Error ...

Saving a Structured Array (containing plot parameters) to a mat file

Explanation: your structure is not scalar: it has nlines elements. The -struct option only works with scalar structures. Error ...

3 months ago | 0

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Answered

Does Matlab's integral function pass the integration variable to the function handle one scalar at a time or as a vector?

"Does Matlab's integral function pass the integration variable to the function handle one scalar at a time or as a vector?" By ...

Does Matlab's integral function pass the integration variable to the function handle one scalar at a time or as a vector?

"Does Matlab's integral function pass the integration variable to the function handle one scalar at a time or as a vector?" By ...

3 months ago | 0

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Answered

How avoid exponential notation in compose

"How avoid exponential notation in compose" Explanation: the %d conversion is for integer values. Are all of your data integer ...

How avoid exponential notation in compose

"How avoid exponential notation in compose" Explanation: the %d conversion is for integer values. Are all of your data integer ...

3 months ago | 0

Answered

save tic toc in duration style

tEnd = 60*60+20 txt = mytime(tEnd) writelines(txt,'myfile.txt') Checking: type myfile.txt function str = mytime(toa) spl...

save tic toc in duration style

tEnd = 60*60+20 txt = mytime(tEnd) writelines(txt,'myfile.txt') Checking: type myfile.txt function str = mytime(toa) spl...

3 months ago | 0

Answered

Combing Date and Time Variables into ONE DateTime Vector

If you have any influence on the data design, then making these changes would simplify your data processing: save the data in c...

Combing Date and Time Variables into ONE DateTime Vector

If you have any influence on the data design, then making these changes would simplify your data processing: save the data in c...

3 months ago | 0

Answered

Readtable Delimiters on two similar files gives differing result

"One thing for sure is that all my data is under the line begining with "Point"" tA = myread('A.txt') tB = myread('B.txt') fu...

Readtable Delimiters on two similar files gives differing result

"One thing for sure is that all my data is under the line begining with "Point"" tA = myread('A.txt') tB = myread('B.txt') fu...

3 months ago | 2

Answered

How to write data from a Cell Array as multiple columns in a text or CSV file?

This actually works with vectors of different lengths (as your question shows): C = {[0;1;2;3], [4;5;6;7;8;9]}; D = {}; for k...

How to write data from a Cell Array as multiple columns in a text or CSV file?

This actually works with vectors of different lengths (as your question shows): C = {[0;1;2;3], [4;5;6;7;8;9]}; D = {}; for k...

3 months ago | 0

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Answered

Why is this simple loop not working?

"I don't know why this is happening." The problem is very simple: you do not extend x in the same way that you extend y and z. ...

Why is this simple loop not working?

"I don't know why this is happening." The problem is very simple: you do not extend x in the same way that you extend y and z. ...

3 months ago | 2

| accepted