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Hi all,

I tried to used some statistical methods to analyze the data in maple and encountered some problems.

I wanted to perform a cluster analysis to quantify differences among individual samples and hoped to create the dendrogram like this:

 

For example, each sample is assigned to a cluster and there are about 4 main clusters plus additional outliers in this case through the dendrogram method.

But I didn't find any related command to create this kind of graph. How to realize this analysis in Maple? 

I'd appreciate any help on this topic. Thank a lot.

hi, i have a problem with maple. i took the codes from a book, it should be true but even i copied and past exactly the same, again the maple gave me error which i couldnt solve. could you please help me? how can i correct it ? incorrect codes are below, but if you need all codes i can write here. i need a solution immediately :(

>relativefrequencies := proc(text, language)
evalf(frequencies(text, language)/StringTools:-Length(text))
end proc:
VigenereKeyFind := proc(ciphertext, max:=floor(StringTools:-Length(ciphertext)/15),
{language:=en})
uses StringTools;
local freqs;
freqs := map(x -> relativefrequencies(x, language),
map(Implode, partit(Explode(ciphertext),
keylength(ciphertext, max, ’:-language’=language))));
Implode(map(li -> frequencyanalysis(li, ’:-language’=language), freqs))
end proc;

>VigenereKeyFind(c);
Error, (in VigenereKeyFind) ``’`` does not evaluate to a module

I have the following expression 

lambda1-2.9881355172134833*lambda2+16.044692204509636*lambda1^2-114.31727386075951*lambda1*lambda2+202.36051939112247*lambda2^2

 

I want to get the expression in a form in which all the coeffs are fixed to 7 decimal places. 

 

I have tried with 

evalf[7](lambda1-2.9881355172134833*lambda2+16.044692204509636*lambda1^2-114.31727386075951*lambda1*lambda2+202.36051939112247*lambda2^2)

Please help me plot the graphs of the following equations:-

eq1 := diff(E[X(t)], t) = lambda-delta*E[X(t)]-beta*E[X(t)*V(t)];
 eq2 := diff(E[Y(t)], t) = -delta*E[Y(t)]+beta*exp(-rho*tau)*E[X(t)*V(t)];

eq3 := diff(E[V(t)], t) = gamma+N*kappa*E[Y(t)]-mu*E[V(t)]-beta*E[X(t)*V(t)]
NB:- E[X(t)]= the expected value of variable X at time t. 
Please help me know how to input this...

NewtonBlackArea.mw

I have been working with Newton-Raphson fractals for some time.  Like others it was necessary to deal with the "black areas" many times, so I performed some additional analysis and present some of these results here.  This will allow others to stop coloring these areas black and allow visualization of the structure inside these areas.  It will also help demonstrate...

hello everyone, I have a numerical methids exam in acouple of hours and I just dound out that maple 11 on our campus computers has an old student package tht doesnt include numercalanalysis , is there anyway to update it ?

I am trying to model a multibody system using euler lagrange equation. There are 3 links in the system attached with each other by revolute joints. The first link has one end fixed with the revolute joint.

Length of links= l1,l2,l3

Angle with x axis=Theta1,Theta2,Theta3

Mass of links=m1,m2,m3

Moment of Inertia = M1,M2,M3

I am not able to find the solution of ODE system comprising of 3 ODEs which I get after solving Euler Lagrange Eq for...

 


Dear Sir,

I attached an example file to this email via speedyshare, please check it out, also please see the following pasted warning message from that file.

http://www.speedyshare.com/files/29834055/DSsolve_range_example.mw

My analysis gives a warning. Though I have results that look reliable, it is nasty to receive this kind of warning...

Actually what this warning means?
Does it affect the results badly?
How about reliability...

Hi all

I need to find the fourier coefiicients.  In the following Maple program I get the fourier transform of the signal which is fine, BUT actually I am interested in finding A0, An and Bn of the signal denoted by Plot(f(t),t=0..2*Pi);

step:= 2*Pi/2000;
   start_point1:=Pi/3+Pi/6;
   duration1:=Pi/3;
   start_point2:=4*Pi/3-Pi/6;
   duration2:=Pi/3;
   f:= t -> piecewise(t >= start_point1...

Hi:

I asked Maple to evaluate (using "evalf") an infinite sum and it says (very quickly) that the answer is identically 0 (not 10^(-7)).

When I numerically  evaluate a large number of terms of the sum, the answer gets smaller as the number of terms increases, so it seems that Maple is probably correct. The fact that the answer is immediate suggest that Maple is doing some analysis rather than adding a large number of numerical values.

I'd like to...

I'm trying to plot phase analysis for the Friedmann's equation, however when running the protocol and trying to plot these phase analysis, it comes up with error that rho wasn't allowed in the set of options!

Here's the code i'm having difficulty with!?!

> SFsys := proc (lambda, W, ics, T, v, u) local sys, flatF, rho0line, plot0, plotDSp, plotDSm, plotE, flatF_Plot, IC, df1, df2; 
sys := eval(DSys, {Lambda = lambda, gamma = W}); 

Hi,

I'm teaching numerical analysis with Maple and then I started with fixed iteration method.

When I programed the method which is simple, I got the solution as:

restart:with(Student[NumericalAnalysis]):

f := x->2*tan(x)-x-1;

g := x->arctan((1/2)*x+1/2);   # fixed point method where the solution of x=g(x) is the the solution f(x)=0

x[0] := 0.2; for k from 0 to 20 do x[k+1] := evalf(g(x[k])) end do; this line give the solution

Hey!

I'm really new on using maple 14 and I need help please.

I want to either connect maple 14 software with an oscilloscope for data acquisition or import the data captured by the oscilloscope to maple 14 and manipulate this data with the software for dynamic system analysis so I was wondering if anyone knows a programming code or a command to do this please =( I'm stuck

 

Thanks for your attention...

Hi to you all, I'm brand new to this forum and I hope you could help me.

I wrote a Maple14 worksheet which perform data analysis, reading information from a set of file (usually 50 files) coming from an acquisition device. They are text file but the acquisition software produce them in the form:

namefile-0Ep.irr, namefile-1Ep.irr .... namefile-49Ep.irr

where "namefile" is the name I choose when i start the acquisition.

In order to perform...

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