Answered
How to change both the axis value ranges
Aftab, you could simply data_km = 125 * (data + 1); where |data| would be your current one ranging from -1 to +1 and assu...

11 years ago | 0

| accepted

Answered
Columns with at least one zero element
Anya, you could use A = [1 2 3 0 8; 5 0 1 2 2]; col = find(sum(A==0)) col = 2 4 |col| shows the columns whi...

11 years ago | 0

| accepted

Answered
How can I change a quotation mark in a text string readed from an excel sheet ?
Christophe, do you mean: old_str = 'Pression d''injection' old_str = Pression d'injection new_str = strrep(old_str,...

11 years ago | 0

| accepted

Answered
Saveas plot using name of imported data file.
Samir, how about [pathstr,name,ext] = fileparts(filev); f = fullfile(pathstr,name); saveas(gcf,f)

11 years ago | 1

Answered
Random Matrix to even matrix
Manoj, you could use a = 0:5; b = a - mod(a,2); Note, your vector is a row vector. Use the prime operator to turn it in...

11 years ago | 0

| accepted

Answered
vertical concatenation of matrices in a loop
Yuvashree, try data = []; for fileNr = 1:8 [...] % removed code for better readability data1...

11 years ago | 1

| accepted

Answered
How do I control the legend contents when the plot functions are within a for loop?
Brad, see this <http://www.mathworks.com/matlabcentral/answers/129574-how-do-i-select-data-to-legend-in-a-plot#answer_136770 ans...

11 years ago | 1

| accepted

Answered
I want to see the answers of multi equations, equations are in m file
Alireza, add syms a b c d e f g h i j k l in front of the |solve| command. >> S.a ans = 0.0989281143421615866104...

11 years ago | 1

| accepted

Answered
Index must be a positive integer or logical
Sebastiaan, the problem is that in A(1,1) = r(n+0.5)/(h^2)+r(n-0.5)/(h^2)+a*r(n) you are trying to access r(8.5) %...

11 years ago | 0

Answered
How to save all trials in Matlab
M, use instead counterclockresponse(k) = getaresponse;

11 years ago | 0

| accepted

Answered
vpasolve for numerical solution
Richard, it seems the equation you posted cannot be satisfied. 0.95 * 2 * atan((4.5)/(2*r)) * r / (4.5) == 1 or 0.95...

11 years ago | 0

Answered
how to check negative values are there or not in a matrix????
suchismita, use a(a<0) = 0;

11 years ago | 13

| accepted

Answered
I can calculate two error individually. but i can't calculate two error simultaneously. I found two result individually which is given in below. but i want to merge both error and need a single answer for following code, but i can't. Please help me
Mehedi, how about ideal = [idealx; idealy]; app = [appx; appy]; error = ((abs(ideal-app))./ideal)*100 Simply put ...

11 years ago | 0

Answered
Irregular measurement points and plotting
Merit, you can get started with data = [1,95.5; 3,92.8; 6,90.4; 12,89.7]; plot(data(:,1),data(:,2),'bd') % plot first col...

11 years ago | 0

| accepted

Answered
Help regarding use of BVP4C in solving an ODE.
AGNIVO, check out: function my_pde() e = 1.602*10^-19; %electron charge [...] %% remove code for ...

11 years ago | 0

| accepted

Answered
Argument 'range' for ode45
Douglas, to your first question you would choose |linspace| if you want the ode solver to *return solutions at specific times*. ...

11 years ago | 0

| accepted

Answered
what's the program mistake?
Hello Ali, use instead r = solve(b==0)

11 years ago | 0

Answered
I have a matrix of dimension a=[993,1], I need a matrix b=[331,3] such that every 3 columns of the a forms a row of b
Chris, use b = reshape(a',3,[])'

11 years ago | 0

Answered
Problem identifying a symbolic variable as a double
Dina, did you try isnumeric(double(res)) Just in case this does not result in a "1", what MATLAB release are you working ...

11 years ago | 0

Answered
how to find subsets
Hello, use |nchoosek| A = [1,2,3,4,5,6]; subsA = nchoosek(A,4) for four elements, for example.

11 years ago | 1

Answered
How do I delete an element from a structure?
Douglas, use <http://www.mathworks.de/de/help/matlab/ref/rmfield.html |rmfield|>: k = rmfield(k,'options');

12 years ago | 0

| accepted

Answered
Is there anyway to exceed plotting 8 data sets in a graph?
Ozgur, check out my_col = jet(20); t = 0:0.1:pi; a = 1:length(my_col(:,1)); y = a'*sin(t); hold all for ii = 1:num...

12 years ago | 0

| accepted

Answered
bluetooth with LEGO mindstorms EV3
Adham, Bluetooth for the EV3 platform is not yet supported by Simulink.

12 years ago | 0

Answered
Help me about sphere ?
Nguyen, use instead z = real(sqrt(1 - x.^2 - y.^2)); to retain the real part only.

12 years ago | 1

Answered
Why does it gives matrix dimension must agree?
Anwesha, use R = 3e-7:1e-7:10e-7; V = 0.5; Vth = 0.011*V + (1.3e-5*V./R.^2); % note the dot in front of / sign pl...

12 years ago | 1

| accepted

Answered
How to generate and use different colours on a plot and label as per the colours?
Sameer, something like x = 0:0.1:1; y = sin(x); z = cos(x); plot(x,y,'r-d',x,z,'b-o',x,y.*z,'g-*') legend('x vs y','...

12 years ago | 0

Answered
Error plotting graph, with y behaving similar to step function
You could use something like t = [-5:0.01:5]; y = (t.^2).*(t>0) + 5*(t<=0); yy = 5*ones(numel(t),1); yy(t>0) = t(t>0...

12 years ago | 1

| accepted

Answered
How to assign different values to different variables input by the user?
Dijesh, you could use the |eval| command: prompt = 'Enter data: '; title = 'Data input'; dlg_ans = inputdlg(prompt,t...

12 years ago | 0

| accepted

Answered
how to get real quotient in division process?
Saima, not quite sure what you mean, but if you need more significant digits for your answers enter format long in the ...

12 years ago | 0

Answered
Error using taylor to find Maclaurin polynomials
Samious, how about syms x f = exp(x^2); ts = taylor(f, x, 0, 'Order', 5)

12 years ago | 3

| accepted