Answered

Dynamic matrix columns combinations

"any idea on to how overcome this? Do I need to write a combination function myself?" Use NDGRID with some comma-separated list...

Dynamic matrix columns combinations

"any idea on to how overcome this? Do I need to write a combination function myself?" Use NDGRID with some comma-separated list...

3 months ago | 0

Answered

How to split/segment csv file into multiple sections?

P = '.'; % absolute or relative path to where the file is saved F = fullfile(P,'test_file.csv'); O = detectImportOptions(F,'Va...

How to split/segment csv file into multiple sections?

P = '.'; % absolute or relative path to where the file is saved F = fullfile(P,'test_file.csv'); O = detectImportOptions(F,'Va...

3 months ago | 1

| accepted

Answered

Matlab can't readtable on Mac, please help me.

"how i do like this, can you show me please, thank you." P = 'absolute or relative path to where the file is saved'; F = fullf...

Matlab can't readtable on Mac, please help me.

"how i do like this, can you show me please, thank you." P = 'absolute or relative path to where the file is saved'; F = fullf...

3 months ago | 1

| accepted

Answered

How to produce an array that displays the common data values in other arrays?

A = [1,1,0;1,1,1;0,1,1] B = [1,0,1;0,1,0;1,1,1] C = [1,1,1;1,1,0;1,1,1] D = double(A & B & C)

How to produce an array that displays the common data values in other arrays?

A = [1,1,0;1,1,1;0,1,1] B = [1,0,1;0,1,0;1,1,1] C = [1,1,1;1,1,0;1,1,1] D = double(A & B & C)

3 months ago | 0

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Answered

Matlab code to delete contents of a subfolders

P = 'absolute or relative path to where the project folders are'; S = dir(fullfile(P,'**','Inputs','*.*')); for k = 1:nunel(S)...

Matlab code to delete contents of a subfolders

P = 'absolute or relative path to where the project folders are'; S = dir(fullfile(P,'**','Inputs','*.*')); for k = 1:nunel(S)...

3 months ago | 0

Answered

How to convert a 1x1 struct to double matrix (error using pan tompkin)?

"Originally, I didn't put the semicolon, I only added it because MATLAB error system recommended it. I did remove it and there's...

How to convert a 1x1 struct to double matrix (error using pan tompkin)?

"Originally, I didn't put the semicolon, I only added it because MATLAB error system recommended it. I did remove it and there's...

3 months ago | 1

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Answered

What is wrong with this code for finding out the number of significant digits after decimal?

The least unexpected number of non-zero fractional digits aka decimal places (limited to 15 significant figures of the binary fl...

What is wrong with this code for finding out the number of significant digits after decimal?

The least unexpected number of non-zero fractional digits aka decimal places (limited to 15 significant figures of the binary fl...

3 months ago | 0

Answered

Not enough input arguments

"Why I can't get the values from matrix x in function MyInput() to use in another function?" Basically because you did not call...

Not enough input arguments

"Why I can't get the values from matrix x in function MyInput() to use in another function?" Basically because you did not call...

4 months ago | 0

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Answered

Reading Multiple Excel Files, Analyzing and Indexing

Use indexing into the structure array that you already have (i.e. the output from DIR): P = 'absolute or relative path to where...

Reading Multiple Excel Files, Analyzing and Indexing

Use indexing into the structure array that you already have (i.e. the output from DIR): P = 'absolute or relative path to where...

4 months ago | 0

Answered

there is no plotting appearance

"there is no plotting appearance" Because you are plotting exactly one data point. By default there PLOT shows lines (which con...

there is no plotting appearance

"there is no plotting appearance" Because you are plotting exactly one data point. By default there PLOT shows lines (which con...

4 months ago | 0

Answered

Interpolating for multiple curves and finding the y axis value

Forget about having lots of separate variables in the workspace. Learn to use matrices! x = [0,7.1702,9.1995,9.5716,11.3641,12....

Interpolating for multiple curves and finding the y axis value

Forget about having lots of separate variables in the workspace. Learn to use matrices! x = [0,7.1702,9.1995,9.5716,11.3641,12....

4 months ago | 0

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Answered

Change date from cell to number inside array

" How do I change it from a cell to a numeric format I can use?" Use the correct type of indexing: if itin_full{1,6}>=0.9 % ...

Change date from cell to number inside array

" How do I change it from a cell to a numeric format I can use?" Use the correct type of indexing: if itin_full{1,6}>=0.9 % ...

4 months ago | 0

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Answered

help using bsxfun to multiplay different size matrixes

tmp = bsxfun(@times, norm_mode, reshape(fields(:,3),1,1,[]))

help using bsxfun to multiplay different size matrixes

tmp = bsxfun(@times, norm_mode, reshape(fields(:,3),1,1,[]))

4 months ago | 0

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Answered

Bar() very thin, does not respond to width argument

"I have a problem with Bar() function" No, you have a problem with ZEROS() function. In particular you have only specified ZERO...

Bar() very thin, does not respond to width argument

"I have a problem with Bar() function" No, you have a problem with ZEROS() function. In particular you have only specified ZERO...

4 months ago | 0

| accepted

Answered

How to validate that one datetime is greater than another

Do NOT convert to low-precision serial date numbers! Avoid deprecated DATENUM ! Argument validation lets you define your own va...

How to validate that one datetime is greater than another

Do NOT convert to low-precision serial date numbers! Avoid deprecated DATENUM ! Argument validation lets you define your own va...

4 months ago | 1

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Answered

Matrix does not want to multiply and gives an error when I multiply a 3x3 matrix with a 3x1 matrix

Read the INV documentation! And then use the recommended function MLDIVIDE: A = [9, 29.3, 140.99; 29.3, 140.99,827.693; 140.99,...

Matrix does not want to multiply and gives an error when I multiply a 3x3 matrix with a 3x1 matrix

Read the INV documentation! And then use the recommended function MLDIVIDE: A = [9, 29.3, 140.99; 29.3, 140.99,827.693; 140.99,...

4 months ago | 0

Answered

alternative of inline function

If you want a derivative, why are you using a function handle? Using symbolic toolbox would be simpler: syms x f = x^2-2*x g ...

alternative of inline function

If you want a derivative, why are you using a function handle? Using symbolic toolbox would be simpler: syms x f = x^2-2*x g ...

4 months ago | 1

| accepted

Answered

Find minimum values based on unique number

P = load('matlab.mat').Prof_temp S = groupsummary(P,"Profile_num","min","Temp") plot(S.Profile_num,S.min_Temp)

Find minimum values based on unique number

P = load('matlab.mat').Prof_temp S = groupsummary(P,"Profile_num","min","Temp") plot(S.Profile_num,S.min_Temp)

4 months ago | 0

Answered

Spli cell array directly at the function output

If you can modify the function to return another output argument the size of the returned cell arrays is only known when they ...

Spli cell array directly at the function output

If you can modify the function to return another output argument the size of the returned cell arrays is only known when they ...

4 months ago | 0

Answered

How to fix loop which over the determined index ?

"Hi guys, im trying to do looping ii 1:900 but why when u run it, it was never-ending loop." I already told you the reason why,...

How to fix loop which over the determined index ?

"Hi guys, im trying to do looping ii 1:900 but why when u run it, it was never-ending loop." I already told you the reason why,...

4 months ago | 0

Answered

Duration type doesn't preserve seconds accuracy

"Duration type doesn't preserve seconds accuracy" That is exactly what CALENDARDURATION objects are for: format longg dt1 = d...

Duration type doesn't preserve seconds accuracy

"Duration type doesn't preserve seconds accuracy" That is exactly what CALENDARDURATION objects are for: format longg dt1 = d...

4 months ago | 0

Answered

Find min and max in groups

A = [12, 11, 12, 5, 3, 10, 5]; B = [0.1, 0.1, 0.1, 0.7, 0.4, 0.3, 0.2]; X = 1:numel(A); Fmax = @(x){x(max(B(x))==B(x))}; Fmi...

Find min and max in groups

A = [12, 11, 12, 5, 3, 10, 5]; B = [0.1, 0.1, 0.1, 0.7, 0.4, 0.3, 0.2]; X = 1:numel(A); Fmax = @(x){x(max(B(x))==B(x))}; Fmi...

4 months ago | 0

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Answered

Use save function with '-fromstruct' option to save a cell array

As the error message states, the structure must be scalar: test_file = 'test.mat'; files = {'test1.m', 'test2.m'}; T = ones(1...

Use save function with '-fromstruct' option to save a cell array

As the error message states, the structure must be scalar: test_file = 'test.mat'; files = {'test1.m', 'test2.m'}; T = ones(1...

4 months ago | 2

| accepted

Answered

How to write to csv file in shortG format?

Here is one approach that gives exactly the shortG format in your CSV file: format long G M = rand(3,5); M(1) = -6.0247123456...

How to write to csv file in shortG format?

Here is one approach that gives exactly the shortG format in your CSV file: format long G M = rand(3,5); M(1) = -6.0247123456...

4 months ago | 1

| accepted

Answered

I need help with an error I get

Perhaps the input argument should be F (not f): function [posicao, velocidade, aceleracao] = atleta(t, F, M)

I need help with an error I get

Perhaps the input argument should be F (not f): function [posicao, velocidade, aceleracao] = atleta(t, F, M)

4 months ago | 1

| accepted

Answered

When multiplying or dividing a vector by a scaler, when do you need a period before the operator?

"When multiplying or dividing a vector by a scaler, when do you need a period before the operator?" Lets consider multiplying. ...

When multiplying or dividing a vector by a scaler, when do you need a period before the operator?

"When multiplying or dividing a vector by a scaler, when do you need a period before the operator?" Lets consider multiplying. ...

4 months ago | 0

Answered

Observations being read as number of columns instead of rows

Perhaps because the data are (complex conjugate) transposed here: 'ValidationData', {stan_x_val', stan_y_val'}, Note that yo...

Observations being read as number of columns instead of rows

Perhaps because the data are (complex conjugate) transposed here: 'ValidationData', {stan_x_val', stan_y_val'}, Note that yo...

4 months ago | 1

| accepted

Answered

Need help figuring out why this nested function is not working

"File not found" You are not providing FOPEN and READMATRIX with the filepath, so they cannot find the file on your computer. P...

Need help figuring out why this nested function is not working

"File not found" You are not providing FOPEN and READMATRIX with the filepath, so they cannot find the file on your computer. P...

4 months ago | 0

| accepted

Answered

Can't seem to replace values in matrix meeting criteria, although the correct row,col coordinates are found

Use SUB2IND: idx = sub2ind(size(img),row,col); img(idx) = 1; The section "Indexing Matrices with Two Subscripts" here: https...

Can't seem to replace values in matrix meeting criteria, although the correct row,col coordinates are found

Use SUB2IND: idx = sub2ind(size(img),row,col); img(idx) = 1; The section "Indexing Matrices with Two Subscripts" here: https...

4 months ago | 0

| accepted

Answered

Compare two files and remove any lines in the second file when they match values found in the first file

lines1 = [1,2,3,4;2,4,6,7;2,5,7,8;6,7,4,6] lines2 = [2,4,6,7;2,5,7,8] out = setdiff(lines1,lines2,'rows')

Compare two files and remove any lines in the second file when they match values found in the first file

lines1 = [1,2,3,4;2,4,6,7;2,5,7,8;6,7,4,6] lines2 = [2,4,6,7;2,5,7,8] out = setdiff(lines1,lines2,'rows')

4 months ago | 0

| accepted