Stephen Cobeldick

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7,318 total contributions since 2014

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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...

14 hours 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...

1 day ago | 0

Submitted

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

1 day ago | 46 downloads |

Submitted

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

1 day ago | 286 downloads |

Submitted

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

1 day ago | 21 downloads |

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...

6 days 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);...

6 days 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+'},'')

6 days 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),...

7 days 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...

7 days 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...

7 days 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)...

7 days 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...

9 days 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...

10 days 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...

10 days 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...

11 days 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...

11 days 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...

11 days 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...

11 days 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...

12 days 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...

12 days 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...

12 days 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...

12 days 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

12 days 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...

12 days 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...

13 days 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...

13 days 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....

16 days 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 ...

17 days 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...

18 days ago | 0

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