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How many ways to determine signal frequency?
If your data is sampled unevenly, Lomb's method can help: http://en.wikipedia.org/wiki/Least-squares_spectral_analysis

14年以上前 | 1

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Value w.r.t to time
in,out %starting values in = 1 1 3 2 5 3 7 4 9 5 ...

14年以上前 | 0

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PCA princomp help please
In my opinion, this is not an appropriate use for PCA as you have described it. Principal components are used to reduce the dime...

14年以上前 | 0

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Serial communication issues
It's possible that mttool (whatever that is) is adding a termination character to the communication packet that Matlab is not. ...

14年以上前 | 0

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FIND AREA SURFACE-PROBLEM IN MY CODE
the function is called dblquad() and requires a function to be passed to it like: f = matlabFunction(Mruxrv); A...

14年以上前 | 1

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Running Matlab code from LabView
Labview has a script node where you can cut & paste your Matlab code into it and wire the inputs & outputs

14年以上前 | 1

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how the coordinates of a point on the coordinate axes
doc ginput

14年以上前 | 0

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Change diagonal place
a= magic(3) a = 8 1 6 3 5 7 4 9 2 >> b=a; >> for i =2:si...

14年以上前 | 0

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Question abut the Chi-square probability density function
no, degrees of freedom would be 1000. You are not calculating another statistic with the data ('using up a DOF') before calling ...

14年以上前 | 0

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Measuring the radius of a stationary circle
there is no change (fortunately for you). the line abc = [x y ones(length(x),1)] \ -(x.^2+y.^2); performs the same wheth...

14年以上前 | 0

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PSD and Pwelch
ummm...because your line calculating the cross power spectrum is commented out?

14年以上前 | 0

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uncertainty and curve fitting
this example shows how to bootstrap to get the standard error in the coefficients. You can adapt it to use lsqcurvefit or trans...

14年以上前 | 0

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*Problem Find area surface *
you are going to need: a =feval(symengine,'linalg::crossProduct',ru,rv)% .* is not cross product! b =feval(symengine,'n...

14年以上前 | 0

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Size filtering and show the position of centroids on the image
from the documentation: I = imread('coins.png'); figure, imshow(I) bw = im2bw(I, graythresh(getimage)); figure...

14年以上前 | 2

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3D Tilted projection
if you have the image processing toolbox take a look at maketform()

14年以上前 | 0

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Help with fitting curve to data
Maybe one of these enveloping tools could help: http://www.mathworks.com/matlabcentral/fileexchange/?term=envelope however...

14年以上前 | 0

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OLS regression for multiplr Ys, Xs
This example regresses 3 curves 'at once'. I'm sure you can adapt it to your situation clc;clear;close all x = sort(ran...

14年以上前 | 0

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Having problems understanding the command y( size(t) ) in a plot.
it just plots xmax vs y(size(t)) as a second trace on the plot, but with the same markings as [xmax/2,ymax]...Have to see more c...

14年以上前 | 0

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Symbolic Toolbox: integration
Apparently you have to do the substitution manually int(simple(cos(x^2)^2)) Warning: Explicit integral could not be found. U...

14年以上前 | 0

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Feeding a vector to a cost function
function f = CostFunction(vector) % brackets not necessary x = vector(:,1); y = vector(:,2); f=4*(1-x).^2.*exp(-(x.^2)-(y...

14年以上前 | 0

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Undefined function or method 'int' for input arguments of type 'double'.
Int is only defined for symbolic variables, for numeric values see quadgk()

14年以上前 | 0

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How to divide and times in matlab
* % matrix multiply .* %scalar multiply / % matrix divide ./ % scalar divide ^ % exponentiation .^ % element-by-element exp...

14年以上前 | 10

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Imposing interval on normrnd procedure.
imposing an interval on the result means it is no longer a normal distribution. With that caveat: d1(d1<0 | d1>10)=[];

14年以上前 | 0

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linsolve help
you don't need linsolve: M = I/H;

14年以上前 | 0

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Multiple Images to Report Generator
If you are creating your images in a loop try drawnow()

14年以上前 | 0

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plotting lines
y = 1:10; x=5*ones(size(y)); z=x+i*y; plot(real(z),imag(z))

14年以上前 | 0

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For loop - what about my min and max values?
Your x axis is the loop variable f, which can only take on one value at a time, thus the min and max are the same. To do what yo...

14年以上前 | 0

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*Problem Akashi-Kaikyo bridge! in figure*
OK this is strange: if I do a= int(sqrt(1+(diff(2*10^(-4)*x^2-0.4*x+200,x)^2))) a = 1250*asinh(x/2500 - ...

14年以上前 | 1

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ind2sub output dimension
you need multiple assignments for that function. [r,c,p]=ind2sub(size(B),56) r = 2 c = ...

14年以上前 | 1

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Matrix Sum
just add the B matricies. For example: A = ones(3) + eye(3) + magic(3);

14年以上前 | 0