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@ Symbol in function handles as an input variable to another function
The issue is given by the requirements of the function integral -- the help file for it reads in part-- >> help integral inte...

4年以上前 | 0

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Finding one value in matrix from covariance matrix
There is no solution to the given problem data set -- by definition cov(A) contains the column variances along the diagonal. Yo...

4年以上前 | 0

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Retrieving data from Excel in multiple sub folders with different names
There's a lot of structure in those directory names -- you have two choices in how to access them and write the code to do so in...

4年以上前 | 0

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Plotting bar graphs with different colors
I've railed over bar interface for 20+ years -- this is harder than it should be even though there is an example in the doc, it'...

4年以上前 | 0

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Find value between the overall maximum and its following minimum
Couple ways... First, [mx,imx]=max(X); % return global max, location imn=find(diff(X(imx:end))>=0,1)+...

4年以上前 | 0

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How to split an array of tot seconds in windows of 60 sec haveing also windows without values?
Use discretize. In paricular, look at the third input form where the bins, and input arrays are durations (iow, convert your ti...

4年以上前 | 0

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Subtracting in a structure
Pass(NumPass).SortedTotalPlayers = diff[0 Pass(NumPass).SortedTotalPlayers];

4年以上前 | 0

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How do I remove all the rows with NaN-value of a specific column?
X(isnan(X(:,1)),:)=[]; % solution a -- remove those rows w/ NaN in column 1 X=X(~isnan(X(:,1)),:); % solution...

4年以上前 | 2

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signal amplitude using FFT - conflicting results and misunderstandings
The latter accounts that the FFT and PSD are two-sided (hence the "2" in the variable P2 for the PSD). The total energy is thus...

4年以上前 | 0

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Problem with specifying separate colours for each of my SCATTER points.
Read the documentation :) c — Marker color [0 0 1] (default) | RGB triplet | three-column matrix of RGB triplets | vector | 'r...

4年以上前 | 0

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Plot of 2 matrix of same dimensions
Description example plot(X,Y) creates a 2-D line plot of the data in Y versus the corresponding values in X. If X and Y are b...

4年以上前 | 0

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Invalid syntax for calling function 'cond' on the path
>> which -all cond C:\ML_R2020b\toolbox\matlab\matfun\cond.m >> cond is a builtin MATLAB function (the condition number) unl...

4年以上前 | 0

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Add a new column to CSV file with equations
[tTable array2table(cumsum(tTable{:,{'A','B'}}),'VariableNames',{'cumA','cumB'})]; where tTable is your table variable. One ca...

4年以上前 | 0

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How to find a corresponds value?
Use the optional second return value of max [mx,imx]=max(t.Power); rmx=t.Radiation(imx); NB: the use of the table, t variable...

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How can I replace multiple indices of a matrix with specific values?
Build the indices vectors somehow -- you have to know where you want the values to in some manner, whether that is through some ...

4年以上前 | 0

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How to plot variables from a table?
>> load Xsensor_ID002_SN01_XT001_XSN.mat >> data.time=duration(strrep(data.time,'"',''),'InputFormat','hh:mm:ss.SSS'); >> data...

4年以上前 | 0

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Finding strings in an excel cell and deleting the entire row
<Answers/347460-how-do-i-delete-an-entire-row-from-excel-from-matlab?> Hint for future -- check out the "SEE ALSO" links Answer...

4年以上前 | 0

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Set XTick of yyaxis to have integer ticks only
yyaxis right plot(rand(1,20)*4, rand(1,20), '*') yyaxis left plot(rand(1,20)*6, rand(1,20), '*') hAx=gca; ...

4年以上前 | 0

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Plotting Excel Sheet of 0s and 1s inkjet printer visualization
How about I=readmatrix('yourfile.xlsx'); imagesc(~I) colormap(gray) If you don't want an image, then try [r,c]=ind2sub(size...

4年以上前 | 0

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Find max values within a defined range for each column and rows of a matrix
Turn into a timetable and use retime

4年以上前 | 1

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How to recover unsaved matlab script if Matlab shutdown automatically?
See previous Answer https://www.mathworks.com/matlabcentral/answers/103130-does-the-matlab-editor-debugger-automatically-save-op...

4年以上前 | 0

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Change the distance between boxplots
boxplot doesn't support variably-spaced box locations. use 'LabelOrientation','Horizontal' to maintain normal tick label orient...

4年以上前 | 0

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change in xlrange of xlsread while sing loop
That's the hard way to go at it...just read the spreadsheet into a table and operate over the regions of interest -- simple exam...

4年以上前 | 0

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Textscan import string data from .txt file
Read the file as is and then clean it up instead... d=readcell('202103.txt','Delimiter',newline); % read a cellst...

4年以上前 | 0

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Matlab - problem with snr function
The two inputs have to have the same orientation as well as same length. You've created a row vector above for the noise while ...

4年以上前 | 0

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How to preserve nanosecond precision in datetime calculations (for large numbers)
>> t='1294871257.002060945'; % treat long value as string >> dsec=seconds(str2double(ext...

4年以上前 | 0

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Is it possible to declare a char variable as global?
Seems to work just fine here -- although globals are fraught with danger, if you're cautious the above usage doesn't seem too eg...

4年以上前 | 0

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Loop through folders to pick data file
You shouldn't be putting your data files under the MATLABROOT tree....that's fraught with difficulties when upgrade. MATLAB cre...

4年以上前 | 0

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I need to change n elements in an array chosen randomly
Not totally clear yet just what are valid locations to be changed -- the above code sets the diagonal elements to one anyways; i...

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How can I perform a set of calculations on multiple matrices located in a csv. file?
Those files have structure to deal with -- generically, one could read the header info and parse it to find out the content -- b...

4年以上前 | 0