Community Profile # William Rose

Active since 2007

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Repeated Measure ANOVA 2x2
@Sara Romanella, The attached script does a two-way ANOVA with repeated measures, as before, and it does a 3-way ANOVA (without...

5 dagar ago | 0

Repeated Measure ANOVA 2x2
@Sara Romanella, Here is a Matlab solution. I put your data into a text file, data.txt (attached). The script reads the text ...

5 dagar ago | 0

Repeated Measure ANOVA 2x2
@Sara Romanella, don't have the Matlab yet but here it is in Excel. The ANOVA section at bottom right of the image shows the ...

6 dagar ago | 0

Func returns a vector of length 2, but the length of initial conditions vector is 9.
@Arda Canbas, Your initial conditions should be a 2-element vector, since mbk() returns a 2-componnt vector. So do tspan=[0 1...

6 dagar ago | 0

How to measure the angle between the poles and the x-axis using the Root Locus?
@Tarek Hajj Shehadi, Suppose you have a real-axis pole , or a zero at , on the real axis at position . And suppose you have a ...

6 dagar ago | 0

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I have differential equations and I need to write them into a vector function
@ssmith, The documentation for ode45() is really good, I think. Can you make an effort at writing some code, and post what you...

16 dagar ago | 0

multiple second order differential equations solution
@Arun Gowda, if you read the help on ode45, it is pretty clear on how to do this. The equations you wrote are 4 separate pair...

17 dagar ago | 0

I want to apply moving average filter! could you tell me how can I do that?
@James James, Here's a method that hadles the edges better, and is more elegant, because it eliminates for loops. t=0:100; x...

18 dagar ago | 0

I want to apply moving average filter! could you tell me how can I do that?
@James James, everything @Adam Danz said is correct. But here's an example, assuming you want a "flat" moving average: t=0:100...

18 dagar ago | 0

3D from multiple 2D curves
@Ivo Grigoli, Suppose you have M different curves y1(x), y2(x),...,yM(x), and they each have N points. Let's assume you also ha...

19 dagar ago | 0

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Why doesn't the code for cardiac cycle with varying resistance and capacitance run?
@Timothy Jen Roxas, I saved your program as script CVSimMatlabCentral.m. I ran it, with this result: >> CVSimMatlabCentral U...

22 dagar ago | 1

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Rotation of 3 vectors together
@Ozzy , Here is code that adjusts a rotation matrix to get the best fit. Best fit is defined as the minimum error between the d...

24 dagar ago | 1

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Rotation of 3 vectors together
Rotations preserve angles between vectors. You multiply the array of column vectors by a 3x3 rotation matrix. x = [0;0;1]; y...

25 dagar ago | 1

How to vertically concatenate files with spectral data that may be in xlsx, csv or a MATLAB dataset format
@Glyn Troup, Here is a demonstration using text files. Each file has a column of 10 numbers. The output array is interleaved a...

25 dagar ago | 0

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Calculate Rotation matrix from 3 points
@Jimmy Neutron, A rotation in three dimensions has three degrees of freedom, so you need to know three "before" points and thre...

25 dagar ago | 0

Solve ode system numerically
@Zhaokai Yin, This is a good question. I thought it could be done with ode45, by using the mass matrix option. This appears to...

ungefär en månad ago | 0

how to generate a( 226 × 1 ) vector "b" as a zero mean white Gaussian noise (WGN) sequence with variance =0.24e-4 ?
@ad lyn b=wgn(226,1,.24e-4,'linear'); fprintf('Variance of b=%6f\n',var(b)) If you run the code above multiple times, you wil...

ungefär en månad ago | 0

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How to fit a function with an integral term to a set of data?
@alfredo scigliani, This fitting problem is complicated, since the function to be fitted is an integral. You can pass the pa...

ungefär en månad ago | 1

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Write a MATLAB program to draw the surfaces z=sqrt(x^2+y^2), z=x^2+y^2, z=x+y and a cylinder of radius 3 using subplot
@Vansh Yadav You are being asked do draw four surfaces in different parts of a single figure. See the help for subplot() for e...

ungefär en månad ago | 1

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Hello All .I want a solution with a simple explanation
Since I'm not good at symbolic math in Matlab, I'll give an example of how to do this problem non-symbolically. The code below ...

ungefär en månad ago | 1

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Hello All .I want a solution with a simple explanation
@Walter Roberson said he is correcting your syntax, but not your logic. @Walter Roberson sees that there are logical errors in ...

ungefär en månad ago | 0

Time dependent heat transfer
@Bruce Griffin, here is the code that does the simulation. The original incorrect answer equation is in the code, but it is com...

Time dependent heat transfer
@Bruce Griffin, I added code to do an actual simulation. I found an interesting and instructive result. When numx=1000 and numt...

Time dependent heat transfer
@Bruce Griffin, Change nmax from 1 to 500. I really like how you used meshgrid to generate all the time, position combintions ...

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Time dependent heat transfer
@Bruce Griffin, You said the third [side] is at 100. That is not true. This problem has one spatial dimension and one time dime...

How to define a path from a set of x-y points and estimate its smoothness?
@Luigi Truppa, Example with two paths, each with 51 waypoints. Path A is a sequence of random points. Path B is a circle. ...

How to compute the average path from scattered data (and its variance)?
@Alberto Bacchin, here's another plot you can make, if you use the mean-of-the-normalized paths approach (pathSimulateAndAverage...

How to compute the average path from scattered data (and its variance)?
@Alberto Bacchin, Since you said you do not care about time, it is OK to normalize all the paths to have the same number of ste...

Filling incomplete data with cftool
@Nicolas Silva Schmalbach See attached. %replaceNaNs.m WCRose 20210928 %Replace NaN values in array with interpolated value...