If statement "if column 1 == column 2 then keep row"
Have you tried something like this? subData = data(colA == colB);

alrededor de 1 año ago | 0

Puting empty value in numeric array
How about putting a NaN in it? Data(n,1)= NaN;

alrededor de 1 año ago | 2

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How to store vectors from each for loop in a matrix
if true X= 1:0.1:2; A = 4; B = 1:5; Y = nan(length(X),length(B)); for i = 1:length(X) Y(i,:) =...

alrededor de 1 año ago | 1

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Array indices must be positive integers or logical values.
I ran your code and it works for me. This leads me to believe you might have a variable in your workspace named min. Try this: ...

alrededor de 1 año ago | 0

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List comprehension-like function in assigning values in nested structures
Try this: h = [data.h];

alrededor de 1 año ago | 1

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Why is this not outputting anything?
For this to work you need to set your intial MIN_VALUE to inf rather than 0. If its set to zero, it will only make output if you...

alrededor de 1 año ago | 0

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Error storing structure within parfor
You could try storing it in a cell array and converting to structure after the parfor: names = cell(num_sim,1); results = cell...

alrededor de 1 año ago | 0

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Why is this matrix instantly forming in the middle of the for loop?
When you calculate S_2, M_0 is subtracted in last part of the equation making it a 1x30 matrix. Should you be subtracting M_0(i)...

alrededor de 1 año ago | 0

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How to use cell as input arguments of a function?
This works for me. Maybe matlab has another merge function? Type this: which merge Make sure the path its giving you points at...

alrededor de 1 año ago | 1

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comparison of vectors and reducing size
If you want to just keep the first 299 elements: sz = min([length(A),length(B),length(C)]); A = A(1:sz); B = B(1:sz); C = C(...

alrededor de 1 año ago | 1

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Please provide insight and assistance with this issue I am having. I am new to Matlab, so any advice would be greatly appreciated.
You do not need the while loop, you can just use the for loop starting at 1 to string length in increments of 5. You also want t...

alrededor de 1 año ago | 0

Reading different lines with different numbers of data
This code is assuming that the only lines that have 3 fields is your data: file = 'filename.txt'; fileID = fopen(file); data ...

alrededor de 1 año ago | 2

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Combine three or more MATLAB figures
I would save figures then plot them as subplots like this: %First Figure h1 = openfig('test1.fig','reuse'); % open figure ax1...

alrededor de 1 año ago | 1

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No. of elements, mean and standard deviation of a field - conditions on other fields
Maybe something like this? f1 = [S.f1]; f2 = [S.f2]; f3 = [S.f3]; f1_cond1 = numel(f1(f1 > 50 & f1(f1 <=100))); f2_idx = ...

alrededor de 1 año ago | 0

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Rearrange an array based on a matrix
Would something like this work: for i = 1:numel(V) [~,k] = find(M == V(i)); col_v = M(:,k); col_v = col_v(col_v ...

alrededor de 1 año ago | 0

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How save an Array in nc
You need to save your lat, lon, time, and data to nc file. Look at documentaion for nccreate. It should be something like this b...

alrededor de 1 año ago | 0

Undefined Function or Variable
You are not setting R becuase you have it in a try catch block and it is throwing an error. That is because you are tryind to in...

alrededor de 1 año ago | 1

Using ismember on vector with strings
if you are trying to match string to string, try this: if any(contains([' nafor','kform','acet'],result))

alrededor de 1 año ago | 0

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Parfor problems about loopVar = initVal:endVal
You are setting the variable xhat in the parfor and using the prevous itereation of xhat. You need to just access and set a slic...

alrededor de 1 año ago | 0

How to organize data in matrix
Did you preallocate output array? output_array = nan(60,45,348); for time_idx = 1:348 output_array(:,:,time_idx) = ncread...

alrededor de 1 año ago | 0

Try this. I also put where you could change year also. year = 2019; start_jd = 182; end_jd = 212; for jd = start_jd:end_jd...

alrededor de 1 año ago | 2

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reading of xls file without nan
Use this to get a cell array of mixed data types (doubles and char): [~,~,raw] = xlsread('myFile.xlsx')

alrededor de 1 año ago | 0

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Picking one line from a .txt file.
Try this: filename = 'file.txt' linenum = 5; fileID = fopen(filename); C = textscan(fileID,'%s',1,'delimiter','\n', 'headerl...

alrededor de 1 año ago | 0

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Vectorization of a function
I think you have some of your dot operators wrong: d1 = (log(S./K) +(r+(1/2)*sigma^2)*t)/(sigma*sqrt(t)); d2 = d1-sigma*sqrt(t...

alrededor de 1 año ago | 1

Index in position 2 exceeds array bounds (must not exceed 1)
The variables u_c and u_p are vectors or the size of the second dimension is 1. Then you try to set these variables with i in th...

alrededor de 1 año ago | 1

How to load an Excel file that changes with the date?
You could just convert numbers to string and piece it together like this: date = datetime('now'); [y,m,d] = ymd(date); filena...

alrededor de 1 año ago | 1

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saving excel file as a new sheet in another excel file using matlab
This will copy workseet from InputExcel and paste it after last sheet in OutputExcel: InputExcel = 'D:\Answers\input.xlsx'; Ou...

alrededor de 1 año ago | 0

Finding the 10 nearest points to every point (with corresponding distances) within a single variable
Try this: load('F_points.mat') f = cell2mat(F_points)'; Mdl = KDTreeSearcher(f); [idx,distance] = knnsearch(Mdl,f,'k',11); ...

alrededor de 1 año ago | 1