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Stephen23


Active since 2014

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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...

5 days 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...

5 days ago | 0

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. ...

6 days ago | 2

| accepted

Answered
Having a string call another string
txt = input("Enter your string: ","s"); disp("Your string was: " + txt)

6 days ago | 1

Answered
Extracting data from struct as array
S(1).a = 1:10; S(2).a = 11:20; S(3).a = 21:30; M = vertcat(S.a) or M = cat(1,S.a) https://www.mathworks.com/matlabcentra...

10 days ago | 1

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Answered
convert double to signed int
A = 40000 B = typecast(uint16(A), 'int16')

12 days ago | 0

Answered
Dynamic matrix columns combinations
"any idea on to how overcome this? Do I need to write a combination function myself?" Use NDGRID with some comma-separated list...

12 days ago | 0

Answered
How to split/segment csv file into multiple sections?
P = '.'; % absolute or relative path to where the file is saved F = fullfile(P,'test_file.csv'); O = detectImportOptions(F,'Va...

14 days ago | 1

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Answered
Matlab can't readtable on Mac, please help me.
"how i do like this, can you show me please, thank you." P = 'absolute or relative path to where the file is saved'; F = fullf...

14 days ago | 1

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Answered
How to produce an array that displays the common data values in other arrays?
A = [1,1,0;1,1,1;0,1,1] B = [1,0,1;0,1,0;1,1,1] C = [1,1,1;1,1,0;1,1,1] D = double(A & B & C)

19 days ago | 0

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Answered
Matlab code to delete contents of a subfolders
P = 'absolute or relative path to where the project folders are'; S = dir(fullfile(P,'**','Inputs','*.*')); for k = 1:nunel(S)...

19 days ago | 0

Answered
How to convert a 1x1 struct to double matrix (error using pan tompkin)?
"Originally, I didn't put the semicolon, I only added it because MATLAB error system recommended it. I did remove it and there's...

21 days ago | 1

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Answered
What is wrong with this code for finding out the number of significant digits after decimal?
The least unexpected number of non-zero fractional digits aka decimal places (limited to 15 significant figures of the binary fl...

22 days ago | 0

Answered
Not enough input arguments
"Why I can't get the values from matrix x in function MyInput() to use in another function?" Basically because you did not call...

23 days ago | 0

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Answered
Reading Multiple Excel Files, Analyzing and Indexing
Use indexing into the structure array that you already have (i.e. the output from DIR): P = 'absolute or relative path to where...

26 days ago | 0

Answered
there is no plotting appearance
"there is no plotting appearance" Because you are plotting exactly one data point. By default there PLOT shows lines (which con...

29 days ago | 0

Answered
Interpolating for multiple curves and finding the y axis value
Forget about having lots of separate variables in the workspace. Learn to use matrices! x = [0,7.1702,9.1995,9.5716,11.3641,12....

1 month ago | 0

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Answered
Change date from cell to number inside array
" How do I change it from a cell to a numeric format I can use?" Use the correct type of indexing: if itin_full{1,6}>=0.9 % ...

1 month ago | 0

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Answered
help using bsxfun to multiplay different size matrixes
tmp = bsxfun(@times, norm_mode, reshape(fields(:,3),1,1,[]))

1 month ago | 0

| accepted

Answered
Bar() very thin, does not respond to width argument
"I have a problem with Bar() function" No, you have a problem with ZEROS() function. In particular you have only specified ZERO...

1 month ago | 0

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Answered
How to validate that one datetime is greater than another
Do NOT convert to low-precision serial date numbers! Avoid deprecated DATENUM ! Argument validation lets you define your own va...

1 month ago | 1

| accepted

Answered
Matrix does not want to multiply and gives an error when I multiply a 3x3 matrix with a 3x1 matrix
Read the INV documentation! And then use the recommended function MLDIVIDE: A = [9, 29.3, 140.99; 29.3, 140.99,827.693; 140.99,...

1 month ago | 0

Answered
alternative of inline function
If you want a derivative, why are you using a function handle? Using symbolic toolbox would be simpler: syms x f = x^2-2*x g ...

1 month ago | 1

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Answered
Find minimum values based on unique number
P = load('matlab.mat').Prof_temp S = groupsummary(P,"Profile_num","min","Temp") plot(S.Profile_num,S.min_Temp)

1 month ago | 0

Answered
Spli cell array directly at the function output
If you can modify the function to return another output argument the size of the returned cell arrays is only known when they ...

1 month ago | 0

Answered
How to fix loop which over the determined index ?
"Hi guys, im trying to do looping ii 1:900 but why when u run it, it was never-ending loop." I already told you the reason why,...

1 month ago | 0

Answered
Duration type doesn't preserve seconds accuracy
"Duration type doesn't preserve seconds accuracy" That is exactly what CALENDARDURATION objects are for: format longg dt1 = d...

1 month ago | 0

Answered
Find min and max in groups
A = [12, 11, 12, 5, 3, 10, 5]; B = [0.1, 0.1, 0.1, 0.7, 0.4, 0.3, 0.2]; X = 1:numel(A); Fmax = @(x){x(max(B(x))==B(x))}; Fmi...

1 month ago | 0

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Answered
Use save function with '-fromstruct' option to save a cell array
As the error message states, the structure must be scalar: test_file = 'test.mat'; files = {'test1.m', 'test2.m'}; T = ones(1...

1 month ago | 2

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Answered
How to write to csv file in shortG format?
Here is one approach that gives exactly the shortG format in your CSV file: format long G M = rand(3,5); M(1) = -6.0247123456...

2 months ago | 1

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