Answered

Is There a Way to Execute splitapply Functionality on Subtables of Master Table?

you'd better do this way: splitapply(@(x) sum(x, 1), T{:, 2:3}, G);

Is There a Way to Execute splitapply Functionality on Subtables of Master Table?

you'd better do this way: splitapply(@(x) sum(x, 1), T{:, 2:3}, G);

12 months ago | 0

Answered

HOW TO FIND THE R-SQUARED VALUE

mdl.Rsquared check https://www.mathworks.com/help/stats/linearmodel.html for properties and methods related to linear regressio...

HOW TO FIND THE R-SQUARED VALUE

mdl.Rsquared check https://www.mathworks.com/help/stats/linearmodel.html for properties and methods related to linear regressio...

12 months ago | 0

| accepted

Answered

What is the reference category in the output for a Fitlme with categorical variables and three-way interaction terms?

The table you copied isn't the default display from matlab, so it's difficult to tell anything from there. It's like an ANOVA ou...

What is the reference category in the output for a Fitlme with categorical variables and three-way interaction terms?

The table you copied isn't the default display from matlab, so it's difficult to tell anything from there. It's like an ANOVA ou...

12 months ago | 0

| accepted

Question

Reduce function if concatenated intermediate results doesn't fit in memory

I'm trying to decode a huge dataset of rougly 500k*10k size. What I'm doing is actually load the file into a datastore, replace ...

12 months ago | 0 answers | 0

Answered

Reading EEG data downloaded from University of Bonn

This is a single channel EEG database. Each zip file has 100 txt files. Each txt file has 4096 samples . What does this mean ? ...

Reading EEG data downloaded from University of Bonn

This is a single channel EEG database. Each zip file has 100 txt files. Each txt file has 4096 samples . What does this mean ? ...

12 months ago | 0

| accepted

Answered

custom labels for errorplot

using annotation annotation('textbox', pos, 'String', str, 'FitBoxToText', 'on'); pos is the position where you want to put th...

custom labels for errorplot

using annotation annotation('textbox', pos, 'String', str, 'FitBoxToText', 'on'); pos is the position where you want to put th...

12 months ago | 0

| accepted

Answered

How to find the max value of amplitude in Fast Fourier Transform function?

I believe it is correct. you can always test it by plotting them. plot(freq, SSAS); hold on; plot(freq_max, SSAS_max, 'ro'); a...

How to find the max value of amplitude in Fast Fourier Transform function?

I believe it is correct. you can always test it by plotting them. plot(freq, SSAS); hold on; plot(freq_max, SSAS_max, 'ro'); a...

12 months ago | 0

Answered

MATLAB does not recognize the matrix

qlt_pts = u(kk) * score(kk); your score is a char array. so what do you want this multiplication to give you?

MATLAB does not recognize the matrix

qlt_pts = u(kk) * score(kk); your score is a char array. so what do you want this multiplication to give you?

12 months ago | 0

Answered

Converting these 5 lines of MATLAB code to C++?

As creating a vector that increments by 3. So is the first line creating an array of values that starts at one, increments by 2,...

Converting these 5 lines of MATLAB code to C++?

As creating a vector that increments by 3. So is the first line creating an array of values that starts at one, increments by 2,...

12 months ago | 0

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Answered

How can I check if a table contains numbers only?

I guess your question re the x-values isn't quite clear. For the first part of your question, it is tricky to determine whether...

How can I check if a table contains numbers only?

I guess your question re the x-values isn't quite clear. For the first part of your question, it is tricky to determine whether...

12 months ago | 1

| accepted

Answered

read table handling column of number values as column of strings

you could call detectImpactOptions first, and modify format from there before readtable. https://www.mathworks.com/help/matlab/...

read table handling column of number values as column of strings

you could call detectImpactOptions first, and modify format from there before readtable. https://www.mathworks.com/help/matlab/...

1 year ago | 0

Answered

Incremental indexing to create an array

using diag(list_of_distances, -1) to get the diagonal you want.

Incremental indexing to create an array

using diag(list_of_distances, -1) to get the diagonal you want.

1 year ago | 1

| accepted

Answered

audio extraction from individual/selective data column.

% it seems from the screenshot that your data is n by 2 matrix % thus length(data) only gives you n % endSample = length(data)...

audio extraction from individual/selective data column.

% it seems from the screenshot that your data is n by 2 matrix % thus length(data) only gives you n % endSample = length(data)...

1 year ago | 0

| accepted

Answered

Sort a cell array based on average of one cell column/row, then sort the structure

I thought I answered this question... anyway, this is less clearer than the other one you asked. See example below % generated ...

Sort a cell array based on average of one cell column/row, then sort the structure

I thought I answered this question... anyway, this is less clearer than the other one you asked. See example below % generated ...

1 year ago | 0

Answered

Export many data into the same excel file.

for i = 1 : nExtracted_files [data,samp_rate] = audioread(Extracted_files(i).name); % different files may have d...

Export many data into the same excel file.

for i = 1 : nExtracted_files [data,samp_rate] = audioread(Extracted_files(i).name); % different files may have d...

1 year ago | 0

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Answered

Mean of cell array containing matrices

Not sure what do you mean by "re-sort the cell array according to the means" as you have two means corresponding to each cell. B...

Mean of cell array containing matrices

Not sure what do you mean by "re-sort the cell array according to the means" as you have two means corresponding to each cell. B...

1 year ago | 0

| accepted

Answered

How to explore off diagonal elements in matrices without avoiding the for loop?

Not sure if many matrices share the same size. Anyway if you store these matrices in a cell you prob have a chance using cellfun...

How to explore off diagonal elements in matrices without avoiding the for loop?

Not sure if many matrices share the same size. Anyway if you store these matrices in a cell you prob have a chance using cellfun...

1 year ago | 0

Answered

how do I convert this to a for loop

% your while loop x = input('Enter a number between 1 and 100: '); i = 0; while x>0 x=x-i; i=i+1; end fprintf('T...

how do I convert this to a for loop

% your while loop x = input('Enter a number between 1 and 100: '); i = 0; while x>0 x=x-i; i=i+1; end fprintf('T...

1 year ago | 0

| accepted

Answered

Update a value class property only if required

I think my solution works if you reset your update_required within your if...end block. See classdef myclass properties ...

Update a value class property only if required

I think my solution works if you reset your update_required within your if...end block. See classdef myclass properties ...

1 year ago | 1

| accepted

Answered

Why does my loop only run once

I assume that your parameter n is a scalar? If you want to let your script loop from 1 through n, you use for i = 1:n.

Why does my loop only run once

I assume that your parameter n is a scalar? If you want to let your script loop from 1 through n, you use for i = 1:n.

1 year ago | 1

| accepted

Answered

How do I extract specific data from an array inside a cell array using indexing?

d = cellfun(@(x) x(3), B); d gives you the third element from all cells. You can index into d to find those that correspond to ...

How do I extract specific data from an array inside a cell array using indexing?

d = cellfun(@(x) x(3), B); d gives you the third element from all cells. You can index into d to find those that correspond to ...

1 year ago | 0

Answered

Applying zero padding and windowing in my code

Based on your code, no zero padding is done and no window function is applied. To do this, you can give fft a second input for f...

Applying zero padding and windowing in my code

Based on your code, no zero padding is done and no window function is applied. To do this, you can give fft a second input for f...

1 year ago | 1

| accepted

Answered

Outputting an equation with variables and text

a=0.9; %CH4 reactant b=0.2; %H2O reactant c=0.1; %CO2 reactant d=1.8; %O2 reactant e=2; %H20 product f=1; %O2 product fp...

Outputting an equation with variables and text

a=0.9; %CH4 reactant b=0.2; %H2O reactant c=0.1; %CO2 reactant d=1.8; %O2 reactant e=2; %H20 product f=1; %O2 product fp...

1 year ago | 0

Answered

How to sum up numbers in time series from .txt file

Load it using readtable. And do a splitapply or rowfun. tbl = readtable('test.txt', 'ReadVariableNames', 0); tbl.Properties....

How to sum up numbers in time series from .txt file

Load it using readtable. And do a splitapply or rowfun. tbl = readtable('test.txt', 'ReadVariableNames', 0); tbl.Properties....

1 year ago | 0

| accepted

Answered

Problem with find or floating point issue

There is always some tricky things with floating precision. Usually it solves thing if you make the comparison by determining if...

Problem with find or floating point issue

There is always some tricky things with floating precision. Usually it solves thing if you make the comparison by determining if...

1 year ago | 0

Answered

How can I sum every nth row?

Just a comment that this could be done without involving a cell, which is the least type that I'd like to use among others. A =...

How can I sum every nth row?

Just a comment that this could be done without involving a cell, which is the least type that I'd like to use among others. A =...

1 year ago | 0

Answered

Array indices must be positive integers or logical values error in a loop.

I doubt it even could finish once as you are indexing C_PS(0), and t(0), and z(0). Didn't check very carefully but I think if yo...

Array indices must be positive integers or logical values error in a loop.

I doubt it even could finish once as you are indexing C_PS(0), and t(0), and z(0). Didn't check very carefully but I think if yo...

1 year ago | 0

| accepted

Answered

python to matlab [1,x] form question

why don't you zscore the x_mat first and add your column vector of all ones, although I don't quite understand why you want to d...

python to matlab [1,x] form question

why don't you zscore the x_mat first and add your column vector of all ones, although I don't quite understand why you want to d...

1 year ago | 0

Answered

For loop extracting variable

Not quite sure your data type. So below just a structure that you can potentially use. within the for loop for iF = 1:yourFile...

For loop extracting variable

Not quite sure your data type. So below just a structure that you can potentially use. within the for loop for iF = 1:yourFile...

1 year ago | 0

Answered

quickest way to scan excel column for keyword

Could try this: suppose that you don't have a column name tbl = readtable('yourExcelFile', 'ReadVariableNames', 0); % N = t...

quickest way to scan excel column for keyword

Could try this: suppose that you don't have a column name tbl = readtable('yourExcelFile', 'ReadVariableNames', 0); % N = t...

1 year ago | 0

| accepted