Answered
Need help creating simple plot (3d plot?)
Ulrik, one option would be a surface plot: n = 100; x = linspace(0,4,n); y = linspace(0,4,n); [X,Y] = meshgrid(x,y); ...

11 years ago | 1

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Answered
Change elements by a set amount.
Justin, do you mean delta = delta - delta/2 + 1 ?

11 years ago | 0

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Answered
Find value of x, from max y (graph)
Andrew, check out x = 0:0.1:6; y = sin(x + 0.5); vel = diff(y)./diff(x); plot(x(1:end-1), vel,x(vel == max(vel)),m...

11 years ago | 0

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Row and column lsim error?
Hello Raymond, the system has two inputs, therefore the input signal needs to be a 2-by-n vector. Use, e.g. ... t = 0:0.01...

11 years ago | 0

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Answered
Problem using Left Hand Division in MATLAB
Michael, the answer (zero-vector) is correct. If you do rank(sysEq) you'll see that the matrix has full rank (= 3). This ...

11 years ago | 0

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Answered
Repeating triangular block in Simulink
Chess, how about using the <http://www.mathworks.com/help/simulink/slref/signalbuilder.html Signal Builder> block?

11 years ago | 0

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Indexing cannot yield multiple results error
Ole, the problem is in this statement vx = vx + ax*dt vy = vy + ay*dt These should be two separate statements. Change it ...

11 years ago | 0

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Lego mindstorms NXT support package
Nauman, in MATLAB simply go to |Resources > Add-Ons > Add Hardware Support Packages|, select and download the NXT package for fr...

11 years ago | 0

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Answered
How do I plot this function in MATLAB?
Michael, use something like [x,y] = meshgrid(0:0.1:5,0:0.1:5); Z = sin(sqrt(x.^2 + y.^2))./(sqrt(x.^2 + y.^2)) ; surf(x,...

11 years ago | 0

Answered
Second Y-axis on the figure window
Aftab, use |<http://www.mathworks.com/help/matlab/ref/plotyy.html plotyy>|. Alternatively, use <http://www.mathworks.com/help/ma...

11 years ago | 0

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Answered
Problem with using lsim which lead to row and column error ?
Hello Raymond, your system has two inputs, therefore |w| needs to be a 2-by-n array, rather than a 1-by-n. Use instead: ... ...

11 years ago | 0

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Answered
How to move a circle on a sine curve?
Airas, use something like ... h = fill(x,y,'y'); axis ([0,200,0,50]) axis equal axis manual for ii = 0:200 ...

11 years ago | 1

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Plotting multiple graphs in one plot.
Hello anton, there is no attachment. But if you can plot one curve, you can do several as well: t = 0:0.1:1; a1 = rand(...

11 years ago | 0

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Error occurs while executing state space parameters using idss?
PARASSURAM, check the size of the matrices. It looks like your |D| matrix needs to be a 1-by-2 (rather than a 1-by-1). |K| sh...

11 years ago | 1

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Answered
Getting a mean of only the numbers
Evelyn, use mean(data(~isnan(data)))

11 years ago | 1

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Answered
Bug in R2014b? Markersize specifier resets marker type
Hello Wouter, the default <http://www.mathworks.com/help/matlab/ref/plot.html#inputarg_LineSpec marker size> is 6. So you probab...

11 years ago | 0

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Answered
Why isn't this plot looking correct?
Tyler, I am not sure what you are looking for. However, it seems like you did get what the exercise is asking for. Note, that th...

11 years ago | 1

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Why is laplace not working?
Hilary, you probaby do not have the Symbolic Math Toolbox installed and/or licensed. At the MATLAB command prompt type which...

11 years ago | 0

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How to define which variable is x and which variable is y axis?
John, simply use plot(b,c) The first argument is the |x| the second the |y| axis. Or, if you want to show both solution b...

11 years ago | 1

Answered
i am getting an error as Attempt to call constructor image with incorrect letter case.
Vetri, see this <http://www.mathworks.com/matlabcentral/answers/38498#answer_47982 answer> reference.

11 years ago | 0

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How to print the second largest of a group of the numbers
Rodrigo, you could use a = [1 2 3 4 5 6 7 8 9 10]; b = max(setxor(a,max(a)));

11 years ago | 1

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Matlab questions from newbies.
Eugene, MATLAB does not know about units and only takes care of the numerics. In other words, you need to make sure that the uni...

11 years ago | 2

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Answered
How can I use greek symbols in plot labels?
Merve, you mean something like lambda = 20:5:40; y = 1./lambda; plot(lambda,y) xlabel('{\lambda}') set(gca,... ...

11 years ago | 7

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Answered
i want to use fonction(unique) to get un string ,but it awlays shows Error using cell/unique?Can anyone tell me what I am doing wrong here? thank you
pengcheng, use P = [pa(1),pa(2),pa(3),pa(4),pa(5)]; H = unique(P); instead.

11 years ago | 0

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Answered
How can I write this function so I can use it on multiple values?
Use bmi = (w*4.88)./h.^2 instead. Note the dot in front of the forward slash.

11 years ago | 0

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Answered
Latex Interpreter - mean bar with subscripts
Use ylabel('$\bar{C}_{p_{A_L}}$','FontAngle','italic','Interpreter','Latex')

11 years ago | 2

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Answered
getting wrong values when coding
Guan-Yu, use instead scale = 0; quiver(x,y,u,v,scale) This turns off the automatic scaling of the arrows.

11 years ago | 0

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approximating pi with taylor series expansion to the 10,000th term
charlotte, you are almost there: l = 1; for ii = 1:10000 l = l + ((-1)^ii)/(2*ii + 1); end x = 4*l; * If the n...

11 years ago | 0

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Answered
Is it possible to check which part of the script is taking longer time for execuation ?
Prathamesh, you are looking for the <http://www.mathworks.com/help/matlab/matlab_prog/profiling-for-improving-performance.html P...

11 years ago | 2

Answered
please explain this error
dav, I believe what you are trying to do is the following max([-3/2, 7, 1.4]) The values you want to find the maximum of ...

11 years ago | 3

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