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Reduce loops to Vectors in Viola Jones Algorithm
I don't have the time right now, but the two inner loops should be replaceable by filter2 or conv2. NB: filter2 has an internal...

5年以上前 | 0

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How would I be able to output ID's that satisfied an if statement?
Use logical indexing, "the MATLAB way". LIMIT=50; % don't put magic numbers inside code; use variables so can change ...

5年以上前 | 0

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Two cell arrays indexing
C=cellfun(@(a,b)b(a),A,B,'UniformOutput',false); It's just logical indexing in a background loop under the guise of cell addres...

5年以上前 | 0

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How to plot over histogram function
>> figure(2) [h] = histogram(norm,100); ... Error using norm Not enough input arguments. >> Your code even if fix the abo...

5年以上前 | 0

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Changing the range of values in a Matrix
E=2*pi/3500*E-pi;

5年以上前 | 0

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Numeric miscalculation on the 14th decimal place
MATLAB used double precision floating point for calculations which is good to roughly 15 decimal digits. Hence, when you subtra...

5年以上前 | 2

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Please answer! How to use an if function effectively?
colmn_analyze=4; % desired column to compare colmn_target=2; % desired column to set valLimit=2; % limiting val...

5年以上前 | 1

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i cant able to plot graph of this cord
y=@(x)c1*exp(-diff(x))+d*(sin(x)/(d^2+1))+d^2*(cos(x)/d^2+1); numel(diff(x)) is one less than numel(x) so the above will fail...

5年以上前 | 0

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Is there a way to change the value of a variable within a function?
You can do anything you want inside the function as long as you can write a definition of what it is that is to happen. You cou...

5年以上前 | 0

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How to delete the first word in each line in txt file?
Read the file into string or cellstr array and extractAfter() the blank. Not feasible to do on disk; don't even think of trying...

5年以上前 | 0

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FilePath including a variable
Variables are variables, not text. rootdir="C:\Users\Desktop\Test\"; % use variable so can change easily filespec="*.txt";...

5年以上前 | 0

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Convert 1X5 to 3X3
Probably more clever ways, but N=3; % number elements to duplicate A=a(1:N); % first row for i=2:numel(a)-(N-1) A...

5年以上前 | 0

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Function : undefined function or variable
"wrote a function fun in a "Vc.m" file" but the function function [Vc] = fun(j,b,m,R) Vc(j) = E0-b.*log(j)-R.*j-m.*exp(n....

5年以上前 | 0

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question regerding the print
Don't really understand the question/confusion... Live Scripts or Live Functions are just that -- they exist and can run only i...

5年以上前 | 0

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Problem Calling Data While Using Linear Regression Model 'fitlm'
"this is [p]ossibly due to the Species column being a string column..." That's exactly the problem. See Coding systems for ca...

5年以上前 | 1

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How can I use the unique function to output all the different numbers following M from all the file names?
rootdir = '/Users/apple/Desktop/Project/Code/Data/'; % good! Using variable so can change: +1 d=dir(fullfile(rootdir,'*_dat...

5年以上前 | 0

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function to calculate rows with non-missing data
Don't need to write any functions -- use ismissing and friends with, perhaps sum and maybe all, any could be of interest as well...

5年以上前 | 0

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Kindly help me to find error in attached code to find leap years for a range
isleapyr=@(yr) (eomday(yr,2)==29);

5年以上前 | 0

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Preallocation of a vector of structure
You preallocated a double array and then tried to put a struct variable into it. As you discovered, "You can't do that!" There...

5年以上前 | 0

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How to cross 2 matrixes, one column at a time?
C=cross(A,B); Like most other functions in MATLAB, cross operates in a vector sense. cross operates by default on the first di...

5年以上前 | 0

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How to write a row of a matrix using if statement?
A=[ones(size(x1) x1 y1 x1.*y1]; B=[ones(size(x2) x2 y2 x2.*y2]; M=[A B]; Of course, numel(x1)==numel(x2) or all goes boom!

5年以上前 | 0

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How would I remove certain values of an array and put it into another array?
function [microbeInd, noLifeInd] = semTest(semData) microbeInd = islocalmax(semData); noLifeInd=semData(~microbeInd); end...

5年以上前 | 0

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How to custom arrange a timetable
Well, that isn't all that is in the files.... >> tRaw=readtable('2019_Jan-Mar_DA_LMPs.csv'); >> head(tRaw) ans = 8×28 tabl...

5年以上前 | 0

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Extract columns from matrix based on a vectors values
>> A=[1,1,1,0; 2,1,0,1]; B=[3,4]; >> A(:,B) ans = 1 0 0 1 >> B=[3,1]; >> A(:,B) ans = 1 ...

5年以上前 | 0

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trying to find an aproximate value in a data set
disp('I in (A), t in s, Idot in A/S') [Imax,Iloc] = max(I); tmax = t(Iloc); Idot_1 = Imax./tmax; disp([Imax tmax Idot_1]) I...

5年以上前 | 0

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How does FindPeaks works?
TMW doesn't reveal innards beyond what is in documentation so the answer is "we don't know". What the documentation says is: "...

5年以上前 | 0

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fortran do loop to matlab
MATLAB is Fortran w/ DO --> for and CONTINUE --> end But, depending on what "somethings" are, you may well (and probably should...

5年以上前 | 1

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How to convert a table to a 2d array
Don't make a cell array of tables to start with... x=[]; for i=1:data.numberofselected concatenated=strcat(strcat(strcat(fi...

5年以上前 | 0

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How to cut out/delete rows in a cell
mu_mean_Mess_20kmh_HA=cellfun(@(c) mean(c(126:end,:)),mu_20kmh_all_VA); Don't need explicit loop; you just forgot the column co...

5年以上前 | 0

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Matlab Arrays not populating correctly
You've got a typo... population.Chromosomes(M).Gene(:) = [rand, 0]; is writing into the location M(=10) every time.

5年以上前 | 1