# VBBV

### PEC

Programming in MATLAB applied to interdisciplinary engineering fields

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**Content Feed**

Getting a blank graph

syms theta1 grid on w2 = @(theta1) ((cos(pi/6)*(sec(theta1)).^2)./ ((tan(theta1)).^2+(cos(pi/6)).^2))*2*pi; theta1 = 0:pi...

5 hours ago | 0

why do I keep getting this error message

t = 0:1/320:0.5; x = @(t) 6*cos(4*pi*t)+2*sin(16*pi*t) -4*sin(32*pi*t);% define anonymous function x(t) plot(x(t))

10 hours ago | 0

Plotting with dsolve for ODE

clear clc [x,y] = meshgrid(-5:0.4:5,-5:0.4:5); dydx = x.^2+y.^2-1; L = sqrt(1+dydx.^2); quiver(x,y,1./L,dydx./L,'k') hold...

1 day ago | 0

Hi COMM, How can I hold only one plot while updating the rest in a figure ? E.g. I want to keep (x,f) plot fixed , while keeping the current value for the animated plot

for k=1:length(x) plot(x(1:k),f(1:k),'or') axis([SSmin SSmax 0 30]) pause(2) end Check with this

1 day ago | 0

the for loop is only giving me the last value

North_20170401 = zeros(360,6); N_Y_K_20170401 = zeros(360,6); for i = 9 :15 : 359 %for j = 1:1:24 disp( Data_2...

3 days ago | 0

matlab 'colorbar' error

This syntax does not seem to be supported in Matlab axis('ij') See what you get if you change it to axis ij

3 days ago | 0

Error in using diff for derivative

t = f(a); while (true) if (gradient(t) ~= 0) b = a - t./gradient(t); if (abs(b-a) <= error) ...

3 days ago | 0

How ro divide a scalar by a excel data and plot the result?

X= 51./data(:,4); Use the element wise division operator

3 days ago | 0

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add new row to table with missing values

V.name = "Ann"; V.city = "Berlin"; V.age = 24; V.height = 172; T1 = struct2table(V); V2.name = "Luka"; V2.city = "Tokyo"...

3 days ago | 0

How do I extract a vector from a single field in a structured variable?

folder_names = struct('name',['MH';'TM';'JW']) participant_ID = folder_names.name Check with this

4 days ago | 0

How can ı solve invalid indexing or function

clc; clear all; syms nw W x Q(x) Y Qo ode1=diff(Q,x)== -nw*W*Y; cond1 = Q(0)== 0; cozum1(x)=dsolve(ode1,cond1); cozum1=s...

4 days ago | 0

Index exceeds the number of array elements. Index must not exceed 1.

z(i+1)=z(i)+(1/6*(k1_hiz(i)+2*k2_hiz(i)+2*k3_hiz(i)+k4_hiz(i))); v(i+1)=v(i)+(1/6*(k1_ivme(i)+2*k2_ivme(i)+2*k3_ivm...

4 days ago | 1

Couette flow between two plate

dpdx= -2:0.1:2; miu = 1; y = linspace(0,1,length(dpdx)) vv = 0.25*miu*dpdx.*y.^2 v = 0.5*miu*dpdx.*y plot(y,v,y,vv) lege...

6 days ago | 1

Control systems failing to plot

Check if you have defined _bode_ as variable in your program.

7 days ago | 0

Need a help to design a block.

If there is no standard block for flow rate in (Smmulink or Simscape)library, then you can define 2 variables as signals. One fo...

7 days ago | 0

| accepted

Matlab code - can anyone guide me how to sort this kind of error, I am new to MATLAB and trying to create an interface for a audio listening experiment

function varargout = TEST(varargin) % TEST MATLAB code for TEST.fig % TEST, by itself, creates a new TEST or raises the e...

8 days ago | 0

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How to plot subset of X-axis names on bar plot?

plotNamesD = plotNames(1:kId);% use the for loop index plotDataD = plotData(1:kId); bar(plotNamesD,plotDataD); hold ...

10 days ago | 0

| accepted

Question

Does MATLAB mobile version have different features ?

Have anyone tried MATLAB mobile for android OS ? Does it have any different features from regular matlab software ?

10 days ago | 0 answers | 0

### 0

answersRefresh plot using switch case with dropdown menu in App designer

plot(x,y) ax = gca % get the axes handle of current plot delete(ax);% delete the axes handle Hope this works

11 days ago | 0

Remove a part of data and replace it with data to fit trend

<https://in.mathworks.com/help/curvefit/smooth.html> Check this link

11 days ago | 0

reading and interpreting statistical chart

<https://in.mathworks.com/help/matlab/ref/pie.html> Check this link

11 days ago | 0

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Plotting a Piecewise Function

syms x z(x) y=piecewise(x<0,0, x>0,1); z(x)=(1+(x-1).*exp(-x)).*y; fplot(z,[-3 3]) Best wishes

12 days ago | 0

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Matlab mass pendulum simulation

f1 = m*g; When computing acceleration, This term needs to be positive if I understand it correctly from law of motion.

13 days ago | 0

Plot the Poisson CDF with the Standard Normal Distribution CDF

x3 = -3:0.1:3 Use the same intervals as x1

14 days ago | 0

how to calculate inverse of modulus function

x= inv(a)*mod(1,N); Check with this

14 days ago | 0

data is getting plot on 4 different graphs while I would like to see all the data on one graph!

figure(1) If you use loop index for figure, then it will plot as many figures as number of files

14 days ago | 0

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Unable to perform assignment because the size of the left side is 1-by-1 and the size of the right side is 7-by-1.

y(i,j,:)= net(double(tst')); Since the resulting matrix _tst_ is transposed, you need this

15 days ago | 0

Incrementing a loop for the next set of values

poweredbypv=(zeros(size(8760,24))); for j = 1: length(poweredbypv) for i=1:24 if Egenpv(i) > Eelectrolyzer poweredbypv(j,i...

17 days ago | 0

| accepted

Unexpected MATLAB Operator ':'

Step = contents{iRow,Step}; Change this line to above. You are trying to make Step as string inside the _switch case statem...

18 days ago | 0

Plotting a Continuous Spectrum

Try changing the values for T ,time period from 0.2 to 1. You can notice the difference whether it's continuous or appears as di...

19 days ago | 1

| accepted