Answered

If statement "if column 1 == column 2 then keep row"

Have you tried something like this? subData = data(colA == colB);

If statement "if column 1 == column 2 then keep row"

Have you tried something like this? subData = data(colA == colB);

1 year ago | 0

Answered

Puting empty value in numeric array

How about putting a NaN in it? Data(n,1)= NaN;

Puting empty value in numeric array

How about putting a NaN in it? Data(n,1)= NaN;

1 year ago | 2

| accepted

Answered

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,:) =...

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,:) =...

1 year ago | 1

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Answered

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: ...

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: ...

1 year ago | 0

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Answered

List comprehension-like function in assigning values in nested structures

Try this: h = [data.h];

List comprehension-like function in assigning values in nested structures

Try this: h = [data.h];

1 year ago | 1

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Answered

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...

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...

1 year ago | 0

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Answered

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...

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...

1 year ago | 0

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Answered

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)...

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)...

1 year ago | 0

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Answered

Make 1 figure with 2 plots in 1 row. First plot will be empty, and second plot will contain bar plot of all values of i from one of the above loops.

subplot(1,2,1); subplot(1,2,2); bar(i)

Make 1 figure with 2 plots in 1 row. First plot will be empty, and second plot will contain bar plot of all values of i from one of the above loops.

subplot(1,2,1); subplot(1,2,2); bar(i)

1 year ago | 0

Answered

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...

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...

1 year ago | 1

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Answered

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(...

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(...

1 year ago | 1

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Answered

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...

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...

1 year ago | 0

Answered

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 ...

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 ...

1 year ago | 2

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Answered

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...

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...

1 year ago | 1

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Answered

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 = ...

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 = ...

1 year ago | 0

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Answered

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 ...

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 ...

1 year ago | 0

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Answered

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...

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...

1 year ago | 0

Answered

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...

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...

1 year ago | 1

Answered

Using ismember on vector with strings

if you are trying to match string to string, try this: if any(contains([' nafor','kform','acet'],result))

Using ismember on vector with strings

if you are trying to match string to string, try this: if any(contains([' nafor','kform','acet'],result))

1 year ago | 0

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Answered

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...

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...

1 year ago | 0

Answered

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...

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...

1 year ago | 0

Answered

How to download multiple data files at once using matlab

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...

How to download multiple data files at once using matlab

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...

1 year ago | 2

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Answered

reading of xls file without nan

Use this to get a cell array of mixed data types (doubles and char): [~,~,raw] = xlsread('myFile.xlsx')

reading of xls file without nan

Use this to get a cell array of mixed data types (doubles and char): [~,~,raw] = xlsread('myFile.xlsx')

1 year ago | 0

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Answered

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...

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...

1 year ago | 0

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Answered

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...

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...

1 year ago | 1

Answered

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...

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...

1 year ago | 1

Answered

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...

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...

1 year ago | 1

| accepted

Answered

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...

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...

1 year ago | 0

Answered

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); ...

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); ...

1 year ago | 1

Answered

using strcmpi in switch case

For a switch statement try this: function state = stateAbbreviation(inputStr) switch upper(inputStr) case 'ALASKA' ...

using strcmpi in switch case

For a switch statement try this: function state = stateAbbreviation(inputStr) switch upper(inputStr) case 'ALASKA' ...

1 year ago | 1

| accepted