Stephen23

Active since 2014

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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...

1 day 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...

3 days ago | 0

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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...

4 days 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 ...

5 days ago | 0

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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...

5 days ago | 0

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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...

6 days ago | 0

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Submitted

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

6 days ago | 108 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 ...

6 days 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 = ...

7 days ago | 0

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Answered
Read big file with mixed data types with datastore
ds = datastore('./*.txt', 'Type','tabulartext', 'NumHeaderLines',2, 'TextscanFormats',repmat("%f",1,5)); T = preview(ds)

8 days ago | 0

Submitted

Next Available Filename
Return the next unused filename, incrementing an integer as required.

10 days ago | 8 downloads |

Answered
How to plot 4 Tiled plots with 2 x axis and 2 y axis in one figure
Do NOT call TILEDLAYOUT multiple times. Only call TILEDLAYOUT once. After that you call NEXTTILE for each plot. "I want to plo...

12 days ago | 0

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Answered
Need to create an array that consists of 5 numbers found through a while loop
Take a look at this line: array.append = distance; You looks as if you are trying to write Python code. However, MATLAB does n...

13 days ago | 0

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Answered
how do I save the entire workspace?
https://www.mathworks.com/help/matlab/ref/save.html

18 days ago | 0

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How do I merge two structs, where one field in the struct is itself a struct?
You can always use a loop and DIY: obj.Experiment = struct('Measurement',struct([])); useStructVar = true; % true = "Real-w...

19 days ago | 0

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Answered
How to replace the missing values in cell array with previous ones?
C = load('data_imp.mat').cycles_check; C{1} = '01L'; C(cellfun(@isempty,C)) = {''}; C = fillmissing(C,'previous')

19 days ago | 0

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Answered
How to extract numerical values from a text in an array or table?
No need for slow superfluous CELLFUN. Simpler and more efficient: C = {'xxx'; 'yyy 15 units'; '15-25 units'; 'zzz'}; D = str2d...

20 days ago | 0

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Answered
Convert Python tuple output into MATLAB array
"The issue is that the double() function from MATLAB does not convert the tuple into a double array" No, the issue is actually ...

20 days ago | 0

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Answered
Merging uniform boxes into larger ones
You could download this FEX submssion: https://www.mathworks.com/matlabcentral/fileexchange/28155-inscribed_rectangle and use ...

21 days ago | 1

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Answered
Operator '+' is not supported for operands of type 'function_handle'.
"Is there something wrong with this code?" You are calling PLUS on the function handle LAP. Function handles are not numbers, ...

21 days ago | 1

Answered
When the histcounts function is used, data that was not in the original data appears
"My data ecg_filterpeak_index is incremented." Nope, your data are not monotonically increasing. "The first value of ecg_peak_...

21 days ago | 0

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Answered
How do I input a variable into a string?
lv = 3; % example value "B"+lv+":Y"+lv sprintf('B%u:Y%u',lv,lv)

22 days ago | 1

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Answered
An infinite recursive call occurred. How do I fix it?
Get rid of the 2nd line of code: GUI_INI_FM(gcf); % gcf는 현재 GUI 핸들을 가리킴(24.11.11) !!!! DELETE THIS !!!!

22 days ago | 2

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Answered
allocate array to structure, error "Scalar structure required for this assignment."
The error is easy to replicate given a scalar structure** on the LHS, which contains a non-scalar structure DATA (in your case w...

22 days ago | 0

Answered
Interpolate timeseries of a 4D matrix (4th D as time)
Avoid using deprecated DATENUM & DATESTR, using DATETIME is much better. S = load('data.mat') dttA = datetime(2016,1:12,15); ...

27 days ago | 0

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Answered
Data is being corrupted in graphs?
Your data are not being corrupted by MATLAB. You provided MATLAB with time data that has only three significant figures. This ...

28 days ago | 2

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Answered
Read first lines of txt files with textread
"How to get only first 16 lines od the txt files with textread command?" As the TEXTREAD documentation explains, the optional t...

1 month ago | 0

Answered
How to save Matrix in text-file using format double?
Using SAVE for text files is very outdated. The recommended approach is to e.g. WRITEMATRIX: M = [1930,0.0132; 1940,0.00103]; ...

1 month ago | 1

Answered
why on earth does strlength(string.empty) evaluate to an empty matrix and not 0?
"strlength(string.empty) evaluates to an empty matrix but strlength(char.empty), strlength('') and strlength("") all evaluate to...

1 month ago | 1

Answered
Extract 2D array from 3D array using logical index
"I have a PxMxN array that I want to convert in a PxK 2D array. K has to be obtained from a logical matrix MxN. Consequently, nu...

1 month ago | 2

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