Answered

alternative to interpolation, how to introduce randomness

d = rand(3600, length(flux_per_hour)); rd = d./sum(d,1); flux_per_second = flux_per_hour(:).' .* rd; %seconds down, hours ...

alternative to interpolation, how to introduce randomness

d = rand(3600, length(flux_per_hour)); rd = d./sum(d,1); flux_per_second = flux_per_hour(:).' .* rd; %seconds down, hours ...

26 minuter ago | 0

Answered

integral calculus question of two variables.

syms x y int(3*x + y * x^2, x, 2, 3)

integral calculus question of two variables.

syms x y int(3*x + y * x^2, x, 2, 3)

40 minuter ago | 0

Answered

how do I average each 10 elements of a matrix?

mean10 = mean(reshape(Vector, 10, []),1)

how do I average each 10 elements of a matrix?

mean10 = mean(reshape(Vector, 10, []),1)

42 minuter ago | 0

Answered

get user input in the form of an integer

You can use inputdlg() to request multiple boxes, and then str2double() the resulting cell array. You can use input() and assum...

get user input in the form of an integer

You can use inputdlg() to request multiple boxes, and then str2double() the resulting cell array. You can use input() and assum...

ungefär en timme ago | 0

Answered

I can't seem to generate a Morse code output on my edit2 static text in my GUI, is there something wrong with my code? We're supposed to create a GUI which converts Letter/Numbers into Morse code..

x = char(get(handles.edit1_num,'String')); Okay, x is what the user input. for i=1:length(x) You want to proceed through the ...

I can't seem to generate a Morse code output on my edit2 static text in my GUI, is there something wrong with my code? We're supposed to create a GUI which converts Letter/Numbers into Morse code..

x = char(get(handles.edit1_num,'String')); Okay, x is what the user input. for i=1:length(x) You want to proceed through the ...

ungefär en timme ago | 0

Answered

Integrating cell2mat array

function ECC = energy_consumption(ECC_1,ECC_2) syms tt ECC_1t = ECC_1.*tt; ECC_2t = ECC_2.*tt; ECC11 = int(ECC_1t, tt...

Integrating cell2mat array

function ECC = energy_consumption(ECC_1,ECC_2) syms tt ECC_1t = ECC_1.*tt; ECC_2t = ECC_2.*tt; ECC11 = int(ECC_1t, tt...

ungefär 2 timmar ago | 0

Answered

Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched delimiters.

import numpy as np MATLAB does have an import statement, but it only accepts a single name after it; it does not support using ...

Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched delimiters.

import numpy as np MATLAB does have an import statement, but it only accepts a single name after it; it does not support using ...

ungefär 2 timmar ago | 0

Answered

How to add an eguation into my plot?

You can text() a label into position, and you can set the Interpreter property of the text() object to 'latex'

How to add an eguation into my plot?

You can text() a label into position, and you can set the Interpreter property of the text() object to 'latex'

ungefär 2 timmar ago | 0

Answered

How to plot double series with one parameter?

Look at the denominator of your inner summation. It has . But if n = 2*p then that would be p^2 - (2*p)^2/4 -> p^2 - 4*p^2/4 -...

How to plot double series with one parameter?

Look at the denominator of your inner summation. It has . But if n = 2*p then that would be p^2 - (2*p)^2/4 -> p^2 - 4*p^2/4 -...

ungefär 3 timmar ago | 0

Answered

Need help solving equation in terms of a variable

syms L k Lk2 eq8 = cos((L*k)/2)*cos((2^(1/2)*L*k)/4) - (2^(1/2)*sin((L*k)/2)*sin((2^(1/2)*L*k)/4))/2 == 0 K = solve(k*L/2 == L...

Need help solving equation in terms of a variable

syms L k Lk2 eq8 = cos((L*k)/2)*cos((2^(1/2)*L*k)/4) - (2^(1/2)*sin((L*k)/2)*sin((2^(1/2)*L*k)/4))/2 == 0 K = solve(k*L/2 == L...

ungefär 4 timmar ago | 1

Answered

How to go about programming this function in MatLab

c = @(x,y) sum(sqrt((a-x).^2 + (b-y).^2))

How to go about programming this function in MatLab

c = @(x,y) sum(sqrt((a-x).^2 + (b-y).^2))

ungefär 12 timmar ago | 0

Answered

How to call a function in a nested parfor loop?

m = 5; n = 7; xx = randn(m,n); yy = randn(m,n); output = zeros(m,n); parfor i=1:m xi = xx(i,:); yi = yy(i,:); ...

How to call a function in a nested parfor loop?

m = 5; n = 7; xx = randn(m,n); yy = randn(m,n); output = zeros(m,n); parfor i=1:m xi = xx(i,:); yi = yy(i,:); ...

ungefär 12 timmar ago | 1

| accepted

Answered

Initial Value of x(0)=16

Offset = 1; x(0+Offset)= 16 %( how can I make this work????) a=16; N=500; for k=1:N x(k+Offset)= (1/2.*((x(k-1+Offset))...

Initial Value of x(0)=16

Offset = 1; x(0+Offset)= 16 %( how can I make this work????) a=16; N=500; for k=1:N x(k+Offset)= (1/2.*((x(k-1+Offset))...

ungefär 13 timmar ago | 0

| accepted

Answered

Change names of multiple pictures inside a file

a ='C:\Users\nas\Desktop\0.3'; A = dir( fullfile(a, '*.jpg') ); fileNames = fullfile({A.folder}, {A.name}); for iFile = 1 :...

Change names of multiple pictures inside a file

a ='C:\Users\nas\Desktop\0.3'; A = dir( fullfile(a, '*.jpg') ); fileNames = fullfile({A.folder}, {A.name}); for iFile = 1 :...

ungefär 13 timmar ago | 1

| accepted

Answered

Error converting Logical to Char (Horzcat Error)

It is a bug in some versions of Audio System Toolbox. In later versions the line if isscalar([varargin{:}]) has been repla...

Error converting Logical to Char (Horzcat Error)

It is a bug in some versions of Audio System Toolbox. In later versions the line if isscalar([varargin{:}]) has been repla...

ungefär 13 timmar ago | 0

Answered

Translation of a plot line

The easiest way is to find the line handle, extract the YData, add the shift to it, and store the result back in the YData prope...

Translation of a plot line

The easiest way is to find the line handle, extract the YData, add the shift to it, and store the result back in the YData prope...

en dag ago | 0

| accepted

Answered

Read 100 different digital files one by one

Do not use [] to splice together filenames. Use fullfile() instead. For example, input_video_filename = [dir_input, 'D:\RA\Ste...

Read 100 different digital files one by one

Do not use [] to splice together filenames. Use fullfile() instead. For example, input_video_filename = [dir_input, 'D:\RA\Ste...

en dag ago | 0

Answered

Matrix Fill with same number sequence

YourMatrix(1:6,1:2:end) = 20; YourMatrix(1:6,2:2:end) = 30;

Matrix Fill with same number sequence

YourMatrix(1:6,1:2:end) = 20; YourMatrix(1:6,2:2:end) = 30;

en dag ago | 0

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Answered

matlab optimisation problem _ constraint

A problem is being constructed. It has constraints. One constraint is named energyBalance . The first line, optimconstr(N) say...

matlab optimisation problem _ constraint

A problem is being constructed. It has constraints. One constraint is named energyBalance . The first line, optimconstr(N) say...

en dag ago | 0

Answered

How to extract data between start and end points of flood as separate events?

ev = arrayfun(@(sp, ep) peakpoints(sp:ep), start_points, end_points, 'uniform', 0);

How to extract data between start and end points of flood as separate events?

ev = arrayfun(@(sp, ep) peakpoints(sp:ep), start_points, end_points, 'uniform', 0);

en dag ago | 0

Answered

Plot dashed lines to given y value on a graph

x = [0:1:25]; y = x * pi ; stem(x,y, '--')

Plot dashed lines to given y value on a graph

x = [0:1:25]; y = x * pi ; stem(x,y, '--')

en dag ago | 0

| accepted

Answered

Any limitation to FFT calculation for large sampled signals

Example below with 5e7 (50,000,000) points -- 1000 times more than you were asking for. The number you are asking for is no prob...

Any limitation to FFT calculation for large sampled signals

Example below with 5e7 (50,000,000) points -- 1000 times more than you were asking for. The number you are asking for is no prob...

en dag ago | 1

| accepted

Answered

How to read specific lines from a text file and store them in a matrix?

t = readtable('https://www.mathworks.com/matlabcentral/answers/uploaded_files/589822/20200926T000414.txt'); t(1:5,:)

How to read specific lines from a text file and store them in a matrix?

t = readtable('https://www.mathworks.com/matlabcentral/answers/uploaded_files/589822/20200926T000414.txt'); t(1:5,:)

en dag ago | 0

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Answered

How to derive a three variables function from a data

Yes. See for example the Curve-Fitting Toolbox. You might also be able to take advantage of cftool You will need to know the fo...

How to derive a three variables function from a data

Yes. See for example the Curve-Fitting Toolbox. You might also be able to take advantage of cftool You will need to know the fo...

en dag ago | 0

Answered

How to solve a cubic equation using Genetic Algorithms?

f = @(x) x.^4-2*x.^3+3*x.^2+x-4 target = 5; residue = @(x) (f(x)-target).^2 [bestx, fval] = ga(residue, 1) roots([1, -2, 3, ...

How to solve a cubic equation using Genetic Algorithms?

f = @(x) x.^4-2*x.^3+3*x.^2+x-4 target = 5; residue = @(x) (f(x)-target).^2 [bestx, fval] = ga(residue, 1) roots([1, -2, 3, ...

en dag ago | 0

Answered

Matrix line by line

x = [1:1:5; 6:1:10; 11:15; 16:20; 21:25; 26:30; 31:35; [36, 0, -1, nan, nan]]; nrow = size(x,1); for K = 1 : 5 spin = ra...

Matrix line by line

x = [1:1:5; 6:1:10; 11:15; 16:20; 21:25; 26:30; 31:35; [36, 0, -1, nan, nan]]; nrow = size(x,1); for K = 1 : 5 spin = ra...

en dag ago | 0

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Answered

Shortest 2D path between two points avoiding defined zones

https://www.mathworks.com/help/images/ref/bwdistgeodesic.html

Shortest 2D path between two points avoiding defined zones

https://www.mathworks.com/help/images/ref/bwdistgeodesic.html

en dag ago | 0

Answered

Is the RAM memory limiting the output?

Is GUD limited by the RAM as well? Yes. It needs to exist in memory in order for you to be able to save it to a file. However,...

Is the RAM memory limiting the output?

Is GUD limited by the RAM as well? Yes. It needs to exist in memory in order for you to be able to save it to a file. However,...

en dag ago | 0

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Answered

Transfers of given points

%some sample data for example data(:,1) = linspace(0, 11000, 500); data(:,2) = 9500 .* exp(-0.00048 .* data(:,1)); %the wor...

Transfers of given points

%some sample data for example data(:,1) = linspace(0, 11000, 500); data(:,2) = 9500 .* exp(-0.00048 .* data(:,1)); %the wor...

en dag ago | 0