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Stephen Cobeldick


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7.318 total contributions since 2014

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Submitted


Customizable Natural-Order Sort
Alphanumeric sort of a cell array of strings, with customizable numeric format.

1 dag ago | 45 downloads |

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Submitted


Natural-Order Filename Sort
Alphanumeric sort of filenames or filepaths, with customizable numeric format.

1 dag ago | 297 downloads |

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Submitted


Natural-Order Row Sort
Alphanumeric row sort of a cell array of strings, with customizable numeric format.

1 dag ago | 20 downloads |

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Answered
how to insert fprintf value into GUI edit text box?
You need to use sprintf, not fprintf: sprintf creates a character vector/string (this is what you need). fprintf prints direct...

2 dagen ago | 0

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Answered
Sorting the name field in dir command
You could download my FEX submission natsortfiles: >> S = dir('*.txt'); >> S.name ans = '1.txt' ans = '10.txt' an...

3 dagen ago | 0

Answered
How to concatenate horizontally a cell into another cell based on a vector
X = [1,1,2,2]; C = {rand(3,2),rand(3,1),rand(3,2),rand(3,1)}; C{:} Method one: arrayfun F = @(x)[C{x==X}]; D = arrayfun(F,1...

8 dagen ago | 1

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Answered
MAtrix Indexing with a vector that contains colon
The colons must be character, the numeric indices must be numeric (not char like you tried): A = rand(4,3,2,4,3,2,4,3,2,4,3,2);...

8 dagen ago | 0

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Answered
Extract string with regexp()
inp = {'$abc_in','def_in_hij_out[]','xyz'} out = regexprep(inp,{'_(in|out(\[\])?)?\>','\W+'},'')

8 dagen ago | 0

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Answered
Add an array to a cell arrayn within a for loop
V = [321,123,145,908,123,13,1,643,16,134,212,674,121,222,11]; X = [3,7,11,15]; F = @(b,e)V(b:e); C = arrayfun(F,X(1:end-1),...

8 dagen ago | 0

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Answered
My plot comes up as a white graph with no line.
The basic problem is that this syntax if t==1,2,3,4,5; is equivalent to writing this (i.e. each expression is evaluated indepe...

9 dagen ago | 0

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Answered
Conversion from string to numbers within table
Most likely you should fix the data importing, rather than messing around with converting strings. load('data.mat') T = varfun...

9 dagen ago | 0

Answered
Help with if statement in a calculation loop
The simplest and most efficient solution is to use MIN and MAX: x = 5 + randn(5,7)*1.5; x = x*1.3 + 0.5 x = min(max(x,1),10)...

9 dagen ago | 0

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Answered
When creating a vector why does the size change when using a variable vs using a value?
"How come the variable is exactly the same value but gives a different answer?" No, the values are not exactly the same. In on...

11 dagen ago | 0

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Answered
Why 'PreserveFormat' in writetable returns error?
The 'PreserveFormat' option was added in R2020b: https://www.mathworks.com/help/matlab/release-notes.html?rntext=PreserveFormat...

12 dagen ago | 0

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Answered
Using matfile to partially extra data still loads entire file into memory
Transpose the cell array (when it is created), so that you are accessing a contiguous part of the cell array: Data = obj.CellAr...

12 dagen ago | 0

Answered
How to make textscan robust against non-matching lines?
str = fileread('data.txt'); tkn = regexp(str,'#HELLOMATHWORKS,([^,]+),(\S+)','tokens'); tkn = vertcat(tkn{:}) vec = str2doubl...

13 dagen ago | 0

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Answered
How to import several csv files (Nan,numeric,text) for operate with them after
"I want the cells to be rename because I want to know to which station corresponds the data in each cell. As you can see I could...

13 dagen ago | 1

Answered
Conversion to double from function_handle is not possible message
You define ome1, ome2, and ome12 as functions of 1 or 2 input arguments, but in some cases you do not call their function handle...

13 dagen ago | 0

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Answered
Extracting rows from table with specific digits
I changed your example data so that the first code string contains '2' but not in the 2nd position, to make a more thorough test...

13 dagen ago | 1

Answered
Assignment of variables by comma separated lists
"Why is that?" The answer is surprisingly simple: the explicit syntax X,Y,Z is considered as three separate evaluations, much...

14 dagen ago | 0

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Answered
How to delete certain strings with chaning numbers in a big data set
tmp = sprintf("page %d of 600",i); data_new4~=tmp Or ~strcmpi(data_new4,tmp) Note that you will want to replace the previous...

14 dagen ago | 0

Answered
Kilobytes to bytes conversion
The SI system defines "kilo". The SI definition of "kilo" means 1000, and has never defined it to mean 1024. Here are the SI pr...

14 dagen ago | 1

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Answered
how can partition a vector into smaller sub sequences
A = 1:19; N = [3,5,7]; S = mat2cell(A(1:sum(N)),1,N) Or V = cumsum([0,N]); F = @(b,e)A(1+b:e); S = arrayfun(F,V(1:end-1),V...

14 dagen ago | 0

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Answered
How to find a number but if it repeats immediately after, take the first value.
A = [0 5 0 5 5 0 0 0 5 5 5 5 5 0 0 0]; X = diff([false,A==5])>0

14 dagen ago | 0

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Answered
Accessing the values of a cell array stored in a table to make a new variable
Var1 = [true;false]; Var2 = [true;true]; c = {ones(1000,1);zeros(1000,1)}; T = table(Var1,Var2,c) T.v = cellfun(@(v)v(1),T.c...

14 dagen ago | 0

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Answered
cell array in cell array
If you really want to use inconvenient nested cell arrays, this will work with your example data: b = [a{:}]; b = [b{3,:}] ht...

15 dagen ago | 1

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Answered
Assigning columns of matrix to strings.
Naming variables dynamically is one way that beginners force themselves into writing slow, complex, buggy code: https://www.mat...

15 dagen ago | 1

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Answered
How to feed additional variables into fsolve function
https://www.mathworks.com/help/optim/ug/passing-extra-parameters.html dv = [3610.30,2040.80,1203.70,483.04,106.03,15.54,3.39,1....

18 dagen ago | 1

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Answered
How do you enforce Element-wise operations in function handles?
There is no trivial answer to this. Fundamentally your request involves swapping operators, just as if you requested to replace ...

19 dagen ago | 0

Answered
remove the first 2 char of a string
What you show is a character vector, not a string. Which makes this easy using indexing: c = ',''B132-32'',''B134-22'',''S132-1...

20 dagen ago | 0

| accepted

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