Solved
jumping astronauts
The surface gravity on the moon is approximately 2 m/s^2. Thats why an funny astronauts feels as light as a feather and jumps fr...
4 years ago
Solved
balance vector
Given a non-empty vector x with integer elements. x shall be called balance vector if one can split the elements of x into two g...
4 years ago
Solved
attenuation
A beam of X-rays propagates a length d(1) through a medium with an attenuation coefficient alpha(1). After that the beam propaga...
4 years ago
Solved
Euler–Mascheroni constant
Approximate the Euler-Mascheroni constant using the series representation gamma_n=\sum_{k=1}^{n} [1/k-ln(1+1/k)] Calculat...
4 years ago
Solved
Babylonian method
Calculate the square root of a given positive number a using the Babylonian method (https://en.wikipedia.org/wiki/Methods_of_co...
4 years ago
Answered
How to generate a signal with logarithmic increasing amplitude and a constant frequency?
t=0:0.001:1; f=60; y=log(t+1).*sin(2*pi*f*t); plot(t,y)
How to generate a signal with logarithmic increasing amplitude and a constant frequency?
t=0:0.001:1; f=60; y=log(t+1).*sin(2*pi*f*t); plot(t,y)
4 years ago | 0
| accepted
Answered
Calculate min/max/mean value every 100 points
Just remove the last 99 elements. If you need the mean, max, min for the last 99 elements, calculate them separately. r=reshape...
Calculate min/max/mean value every 100 points
Just remove the last 99 elements. If you need the mean, max, min for the last 99 elements, calculate them separately. r=reshape...
4 years ago | 0
Answered
A few questions of passing to functions, recursion and plotting
I=0:0.01:(Iph+Is+.01);%I cannot be >Iph+Is (based on log not going negative U=(A*k*T*log((Iph+Is-I)/Is)-I*Rs*q)/q;%easy enough ...
A few questions of passing to functions, recursion and plotting
I=0:0.01:(Iph+Is+.01);%I cannot be >Iph+Is (based on log not going negative U=(A*k*T*log((Iph+Is-I)/Is)-I*Rs*q)/q;%easy enough ...
4 years ago | 0
Answered
Sum row 2 and stop when 1 is reached in row 1
m= [0,0,1,0,0,0,1,0,0,1;0.0220,0.3110,0.0230,1.0550,0.0230,0.0456,0.1120,0.0400,0.0660,0.3690]; %rows of the same matrix must ...
Sum row 2 and stop when 1 is reached in row 1
m= [0,0,1,0,0,0,1,0,0,1;0.0220,0.3110,0.0230,1.0550,0.0230,0.0456,0.1120,0.0400,0.0660,0.3690]; %rows of the same matrix must ...
4 years ago | 1
Answered
How to take mean of many large matrices?
s=zeros(720,600); n=0; for j = 1:19 year = 2001 + j r = readmatrix(sprintf('td%d', year)); s=s+sum(r,3); n...
How to take mean of many large matrices?
s=zeros(720,600); n=0; for j = 1:19 year = 2001 + j r = readmatrix(sprintf('td%d', year)); s=s+sum(r,3); n...
4 years ago | 1
| accepted
Answered
for loops and arrays
m=[30 45 30 45 30 45 30 45 30 45 30 45 30 45 30 45 30 45 30 45 3...
for loops and arrays
m=[30 45 30 45 30 45 30 45 30 45 30 45 30 45 30 45 30 45 30 45 3...
4 years ago | 0
Answered
Combining a number and a string array (both columns) into a single column string array.
s=string(strcat(STRR,num2str(NUMM)));
Combining a number and a string array (both columns) into a single column string array.
s=string(strcat(STRR,num2str(NUMM)));
4 years ago | 0
Answered
How to index equally spaced chunks from a long signal?
ms5=1000;%approximate number of data samples after the pulse to start averaging on (should be based on your sample frequency) m...
How to index equally spaced chunks from a long signal?
ms5=1000;%approximate number of data samples after the pulse to start averaging on (should be based on your sample frequency) m...
4 years ago | 0
Answered
Rewrite the script without using continue and break statement.
Not sure what you are trying to do, but the final b is going to be zero. a=5:-1:-2; b=0; disp('b<41'); disp('b<41'); disp('...
Rewrite the script without using continue and break statement.
Not sure what you are trying to do, but the final b is going to be zero. a=5:-1:-2; b=0; disp('b<41'); disp('b<41'); disp('...
4 years ago | 0
Answered
Playing 3 different audio samples using 3 different buttons on GUI?
You need to pass player1, player2, and player3 to your functions. One way is to make the functions part of an overall function. ...
Playing 3 different audio samples using 3 different buttons on GUI?
You need to pass player1, player2, and player3 to your functions. One way is to make the functions part of an overall function. ...
4 years ago | 1
Answered
Summation In Matlab With Vectors
No loop needed. Need to examine each array (s11,Yd,smat) and ensure they have the necessary elements (at least N). Recommend not...
Summation In Matlab With Vectors
No loop needed. Need to examine each array (s11,Yd,smat) and ensure they have the necessary elements (at least N). Recommend not...
4 years ago | 0
Answered
description to solve equation involved integration
I am somewhat guessing this is what you want. Execution might take a few minutes. Reduce the delta array for faster execution. ...
description to solve equation involved integration
I am somewhat guessing this is what you want. Execution might take a few minutes. Reduce the delta array for faster execution. ...
4 years ago | 0
| accepted
Answered
How do I plot this graph?
Cf= [0.0040,0.0028,0.0014]; Pi= [0.5,1.5,4]; K=0.41; x = linspace(10,1000); g =(sqrt(2./Cf)/10000)'.*x; Re_d=1.0.*10.^4; w...
How do I plot this graph?
Cf= [0.0040,0.0028,0.0014]; Pi= [0.5,1.5,4]; K=0.41; x = linspace(10,1000); g =(sqrt(2./Cf)/10000)'.*x; Re_d=1.0.*10.^4; w...
4 years ago | 0
| accepted
Answered
if-else statement for 4 comparison
A= [0;1;0;1;1;0;1]; B= [0;1;1;0;1;1;0]; output=cell(size(A)); output(A==1&B==1)={'TP'}; output(A==1&B==0)={'FN'}; output(A=...
if-else statement for 4 comparison
A= [0;1;0;1;1;0;1]; B= [0;1;1;0;1;1;0]; output=cell(size(A)); output(A==1&B==1)={'TP'}; output(A==1&B==0)={'FN'}; output(A=...
4 years ago | 0
Answered
Trouble getting code to output properly
datenum('6/21/2011')-datenum('1/1/780')+1
Trouble getting code to output properly
datenum('6/21/2011')-datenum('1/1/780')+1
4 years ago | 0
Answered
Matrix value multiplication error
Use the code box! n=[1,3,16]; P=[300 400 500 700 1000]';%transpose t=4; y=P.*(1+t/100).^n-P;
Matrix value multiplication error
Use the code box! n=[1,3,16]; P=[300 400 500 700 1000]';%transpose t=4; y=P.*(1+t/100).^n-P;
4 years ago | 0
| accepted
Answered
Why am I getting Index in position 1 is invalid. Array indices must be positive integers or logical values.
syms t; Fs = 1.5; % Sampling frequency T = 1/Fs; % Sampling period L = 150...
Why am I getting Index in position 1 is invalid. Array indices must be positive integers or logical values.
syms t; Fs = 1.5; % Sampling frequency T = 1/Fs; % Sampling period L = 150...
4 years ago | 0
Answered
sum logical 1's independently for each column
No loop is needed. r=readmatrix('logicalDataCount.xlsx'); s=sum(r); l=s==size(r,1);
sum logical 1's independently for each column
No loop is needed. r=readmatrix('logicalDataCount.xlsx'); s=sum(r); l=s==size(r,1);
4 years ago | 0
Submitted
Psychomotor Vigilance Task (PVT)
The psychomotor vigilance task (PVT) is a sustained-attention, reaction-timed task.
4 years ago | 4 downloads |
Answered
I can solve this problem by those code but how can i solve this problem by using loop?
Don't understand your question. You are using a loop. l=[45 55 50]; while 1 mukim = input('Please select mukim (A = Pulai,...
I can solve this problem by those code but how can i solve this problem by using loop?
Don't understand your question. You are using a loop. l=[45 55 50]; while 1 mukim = input('Please select mukim (A = Pulai,...
4 years ago | 0
Answered
Looking for Matlab code to implement the Pscyhomotor Vigilance Task (PVT)
I coded this quickly. Here is a back bone for the PVT. Modify as desired. function [sleepAttack,lapse,good,tooFast,excessiveCli...
Looking for Matlab code to implement the Pscyhomotor Vigilance Task (PVT)
I coded this quickly. Here is a back bone for the PVT. Modify as desired. function [sleepAttack,lapse,good,tooFast,excessiveCli...
4 years ago | 0
Answered
How to use a filename character array as a name of a variable?
Just use a loop. newResults=[]; for k=1:100 r=load(strcat('whatever_',num2str(k))); newResults=[newResults;r.Results];...
How to use a filename character array as a name of a variable?
Just use a loop. newResults=[]; for k=1:100 r=load(strcat('whatever_',num2str(k))); newResults=[newResults;r.Results];...
4 years ago | 0
| accepted
Answered
ploting or showing a 41*41*50 matrixt
if it is in a grid [x,y]=meshgrid(1:41); surf(x,y,satur(:,:,1));%shows the first one
ploting or showing a 41*41*50 matrixt
if it is in a grid [x,y]=meshgrid(1:41); surf(x,y,satur(:,:,1));%shows the first one
4 years ago | 0
| accepted
Answered
Elementwise addition operation in matrix or array
If you are just adding a scalar to column 2 of BD BD(:,2)=BD(:,2) + Scalar;
Elementwise addition operation in matrix or array
If you are just adding a scalar to column 2 of BD BD(:,2)=BD(:,2) + Scalar;
4 years ago | 1
Answered
Why is my Muller Methods program fail?
Not sure if you are doing divided differences correctly. x=[1.3 1.5 2];%input x values p=[1 -1 2 -2];%input polynomial y=poly...
Why is my Muller Methods program fail?
Not sure if you are doing divided differences correctly. x=[1.3 1.5 2];%input x values p=[1 -1 2 -2];%input polynomial y=poly...
4 years ago | 0
| accepted