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Im putting in my equations wrong and i need help
There are several changes needed in your equations, please look at the comments in the code where the changes are necessary T1...

3 years ago | 0

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Calculate complex integral formula
syms x real n = 0; F = log(x+abs(n))./log(x.^2+n.^2); F3 = vpaintegral(F,x,1,2)

3 years ago | 0

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Can you change individual elements in a for loop each time?
clc;clear;close all figure hold on col = {'ro','bd','k+'} col1 = {'r-','b-','k-'} % plots points for x=1:3 y=5; plot(x,...

3 years ago | 0

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display a MATLAB table in a figure
fig = uifigure(); Use *uifigure*

3 years ago | 0

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Adding to existing date value
d = datetime(2023,3,27, 'Format','u-MM-dd') d = datetime(addtodate(datenum(d),5,"day"),'ConvertFrom','datenum','Format','u-MM-d...

3 years ago | 0

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Unable to get the correct 3-D Helix plot using the parameters
% Define the parameters p = 0.199; % Pitch distance a = 0.02999500; % Radius of the helix wire b = 0.191; % Radius of the ...

3 years ago | 0

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Answered
WHAT would be the reason this matlab code works but does not draw the graphic?
The y0 and v0 values are both zero and that results in infinite value, which cannot be plotted. Give suitable values to both v...

3 years ago | 0

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Error in ode45
As error suggests that inputs must be of type 'double' , there is a symbolic variable declaration for variable t_o inside th...

3 years ago | 0

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Loading .mat file problem
Assign the data to a variable e.g. Data or Data1, Data2 ... if there are more than one file, and access the data using a dot o...

3 years ago | 0

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Why are my line plots are coming out improperly?
h4 and h8 line plots contain 2D matrices clc;clear;close all; %for head on collision L= 4; D= 3.860; lam= 0.397; % lamda...

3 years ago | 0

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Fourier Series Integration in terms of Pi
Hi @Bob Gill, the value of bn can be computed as follows syms t n 'integer' an = (1/pi)*(int(-1*cos(n*pi*t/pi),-pi,-pi/2)+int...

3 years ago | 0

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Calculate the temperature distr
Without knowing more about the governing equations , its difficult to say about the process involved in your problem definition....

3 years ago | 0

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Getting error when i use a self define function in a for loop
As the error states, Index exceeds the number of array elements. Index must not exceed 25. the length of InputStr is 25, you ne...

3 years ago | 0

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Draw edf plots using "for loop"
"Data" will likely only kept the last record of the signals, which are in the "50 sec", Please look at the below code where w...

3 years ago | 0

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Answered
How to assign different scales between different ticks in axis?
t = linspace(0,10,5); ax = axes; f1 = exp(0.5 * t); f2 = exp(t); plot(ax, t, f1) hold on plot(ax, t, f2) grid on ax....

3 years ago | 0

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Mesh plot, not able to match size of Z and X
t=0.2; p=1; for kx = -3:.1:3 q=1; for ky = -3:.1:3 energy_ary(p,q)= -2*t*(cos(kx)+cos(ky)); y_ary(q)= ky; q=q+1; end x_...

3 years ago | 0

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Ode45 calling a matrix and an array in a function
Change this line q = zeros(4,length(ts)); To q = zeros(1,length(ts));

3 years ago | 0

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readcell error for CSV file in MATLABversion 2022a.
readcell("rte_ioc_map.csv")

3 years ago | 0

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How to display matrices in cell array in a table?
Hi @JingChong Ning you can use array2table & cell2tmat together to display cell array content present in the table as shown b...

3 years ago | 0

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Access and extract table array using for loop
tt = edfread('example.edf') tt = timetable2table(tt); tt.Properties.VariableNames = {'Time','ECG','EEG2'}; for k = 1:length(t...

3 years ago | 0

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fprintf with two variables goes completely through the first variable instead of alternating
x=[1 10 42 6 5 8 78 23 56 45 9 13 23 22 8 9] [xgt10row,xgt10col]=find(x>10) disp('element location of values of...

3 years ago | 0

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Answered
The 'diff()' function is running incorrectly in this program (Error using diff Difference order N must be a positive integer scalar)
T_stop=10; T_sample = 0.002; x0 = [0;0;1/2*pi;0]; options=odeset('RelTol',1.0e-6,'AbsTol',1.0e-6,'BDF','on'); [t,x]=ode45(@(...

3 years ago | 0

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Plotting the graph of (4*x*sinx − 3)/(2 + x^2 )
Use the element wise division for the equation x=linspace(0,4,400); y=((4.*x.*sin(x))-3)./(2+x.^2); %^ ...

3 years ago | 1

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how would i write script to graph the 't' and 'y' values?
figure; load('ALL_DATA.mat','Box40'); subplot(3,1,1); % use the struct name to access the t & y variables plot(Box40.t,Box4...

3 years ago | 0

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How to plot data of only specified rows of matrix
The load function imports data to a struct which contains the variables. To access them you need to use a dot operator, Shown ...

3 years ago | 0

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Unable to exportgraphics or saveas: The value of 'destination' is invalid.
savefig(gcf,'ab.fig') Try using savefig

3 years ago | 0

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How to improve the calculation accuracy of Matlab?
you can use, smoothdata on the resulting matrix l=4; l1=l;%Tx Mode l2=l;%Rx Mode misalignment = -1:1e-3:1; result = zeros(...

3 years ago | 0

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im trying to display grade scores and their letter grade.
for i = 1:length(s)

3 years ago | 0

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who do I keep getting this message? Index in position 1 is invalid. Array indices must be positive integers or logical values.
Moment=zeros(); ki=pi/180; kinc=pi/180; kf=pi; ji=5; jinc=5; jf=100; K = ki:kinc:kf; J = ji:jinc:jf; for k=1:numel...

3 years ago | 0

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Why find doesn't work?
K=[1 2 3 4 5] K(K>=2.7 & K<3.1) % this works, matlab gives 3 Assignment_L(12,1)=2.7; % this equals 2.7 Assignment_U(12,1)=3...

3 years ago | 1

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