Stephen23

Active since 2014

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define an objective function with user defined number of variables in fminunc()
"How do I define the objective function fun() such that it automatically adapts to the number of variables." fun = @(x) sum(x.^...

3 days ago | 0

Answered
Trying to create a drop down that will open a new uifigure, nothing happens when I click confirm?
Simpler solution: get rid of dda.ItemsData. Then .Value is exactly the text that is shown in the menu. This is explained here: ...

12 days ago | 1

Answered
how to read the data of type a*b?
str = '1*5 5*4 6 8 3 12 -5 9*0 7*-1'; vec = sscanf(str,'%f%*[ *]',[1,Inf])

13 days ago | 0

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Answered
Error when creating a tensor from a for loop
"Can anyone tell me what is causing this problem?" Explanation Look at the values that you are using as indices. For the 1st c...

18 days ago | 0

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Answered
I want to build the matrix
m = 4; n = 3; A = randi(9,n) C = [{zeros(n),eye(n)},arrayfun(@(p)A^p,1:m-1,'uni',0)]; G = cell2mat(C(1+tril(toeplitz(1:m))...

20 days ago | 0

Submitted

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

22 days ago | 240 downloads |

Submitted

Natural-Order Row Sort
Alphanumeric row sort of a cell/string/categorical/table array, with customizable number format.

22 days ago | 12 downloads |

Submitted

Customizable Natural-Order Sort
Alphanumeric sort of a cell/string/categorical array, with customizable number format.

22 days ago | 41 downloads |

Submitted

Custom List / Arbitrary Sequence Sort
Sort a text array into the order of custom lists / arbitrary text sequences. Sort words using alphabets that are NOT in ASCII or...

22 days ago | 4 downloads |

Answered
Combine multiple varying length double arrays into one timetable
"I assume there has to be a better way of doing this than iteratively calling each variable..." Note that synchronize accepts 1...

1 month ago | 1

Answered
I want to divide an array into x number of smaller arrays of size [m x n] (where x is = m *n) and then using a for loop fill those smaller arrays with the same value
Changing your perspective on this problem would make it easier. A much simpler approach would be to use REPELEM: U = [3,9,6;2,...

1 month ago | 1

Answered
TIPS ON ENTERING FUNCTION INPUT
https://www.mathworks.com/help/matlab/matlab_prog/customize-code-suggestions-and-completions.html

1 month ago | 0

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Submitted

Number to Scientific Prefix
Convert a numeric value to SI-prefixed text (aka engineering / metric prefix). Bonus: binary prefixes!

1 month ago | 11 downloads |

Submitted

Scientific Prefix to Number
Convert SI-prefixed text (aka engineering / metric prefix) into numeric values. Bonus: binary prefixes!

1 month ago | 4 downloads |

Answered
Why does my function that should modify cells from an input return exactly the input every time?
This line: for j=size(p_cell,1) % y coord should be for j=1:size(p_cell,1) % y coord % ^^ After that you will need to f...

1 month ago | 0

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Answered
EXCEL TABLE - INDEXING MULTIPLE TABLES AT ONCE
Here is one approach using READCELL. It assumes that all data blocks are aligned, and then within each block: the 3rd cell of ...

1 month ago | 0

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Answered
How to group number sequences in a vector
V1 = [1,1,1,2,2,3,3,3,1,1,3,3,3,2,2,2,1,1,1]; R1 = sprintf('\3+\2+\1+'); [Xs,Xe] = regexp(char(V1),R1) Some values would requ...

1 month ago | 1

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Answered
Not enough input arguments
Your function parameterisation is incorrect. This anonymous function: @(t,y,MAP,Nstep,xNOL)ActualmodelwithPinfinity(t,y,MAP(:,k...

1 month ago | 0

Answered
how to convert a matlab variable name to a char for use in a title, legend, etc
https://www.mathworks.com/help/matlab/ref/inputname.html function(input_matrix) in_name = inputname(1); ... title(in_name) ...

2 months ago | 0

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Answered
for loop for non integer values
It is usually much easier and clearer to loop over indices, rather than over data values: V = 1:0.5:10; E = nan(..); % preallo...

2 months ago | 1

Answered
"Not enough input arguments" error when using fullfile
"I dont see how I dont have enough input arguments? " Very easily, when S1 is empty: S1 = dir('thisNameDoesNot*Exist') F1 = f...

2 months ago | 0

Answered
Is griddedinterpolant omits NaN?
None of the pure interpolation routines will "omit" NaN values. NaN values will propagate from input to output, just as they sh...

2 months ago | 0

Answered
I keep getting the "not enough inputs error" and I don't know how to fix it
"i get the " not enough input arguments " error pointing at the x(1) in the F(1) equation" That error is caused by the fact tha...

2 months ago | 0

Answered
Trying to graph a function I made but it seems to only take the first x value.
Explanation The basic problem is that you wrote your function assuming only a scalar input: Fresnel(2) However you did not wr...

2 months ago | 1

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Answered
Command findobj('Type','FunctionLine') produces error if used after fplot invoked with three arguments, fplot(X,Y,LIMITS) - 0×0 empty GraphicsPlaceholder array
A curve defined by a function of X and a function of Y is a parametric curve, so you would need to search for the corresponding ...

2 months ago | 0

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Answered
Error while reading the .csv file
Explanation: As its documentation makes clear, the first input to FOPEN must be the fiename. However, instead of calling it with...

2 months ago | 0

Answered
syntax of this line tmp = cellfun(@(tbl) tbl(:, cellstr(dataVariables(ct))), trainDataNormalized, 'UniformOutput', false);% in RUL tutorial
"I can't figure out what @(tbl) tbl is supposed to do , I didn't create neither a function or a variable with such a name, t...

2 months ago | 0

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Submitted

MatPlotLib Perceptually Uniform Colormaps
MatPlotLib's default perceptually uniform colormap VIRIDIS and distinctive line ColorOrder TAB10

2 months ago | 67 downloads |

Answered
Why does converting categorical(0) to double add 1?
"Why, when converting "a" to double, does "a" become 1, when it was categorical(0) before?" It doesn't. Your comparison is not ...

2 months ago | 0

Answered
unexpected response when trying to concatenate by row after accessing cell value
The MATLAB approach is to simply call VERTCAT instead of the concatenation operator: C = {[5,1];[4 1];[3 1];[2 1];[1 1]}; M = ...

2 months ago | 0

| accepted

Stephen23

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