djc

571 Reputation

12 Badges

15 years, 361 days
Technical professional in industry or government
Budapest, Hungary

MaplePrimes Activity


These are questions asked by djc



Hello,

It seems that Sample  works with only posints as the number of samples (Maple 12):

 restart;
 with(Statistics);

X:=RandomVariable(Uniform(-1,1));

xs:=Sample(X,1E6);

# it gives an error

xs:=Sample(X,1000000); # it is ok.

 

Hello,

I am trying this evalm example (from the help page of evalm, Maple 12):

restart;

alias(Id = `&*`());

# Simplification of matrix operations

evalm((`&*`(`&*`(A, B), 2))*B-`&*`(B, Id));

 

Error, (in evalm/amperstar) &* is reserved for matrix multiplication

A and B are not defined as Matrix in the help page. Is it the problem?

 

Hello,

I have 4 points in 2D and I want to plot them with different colors:

This works in Maple 12:

plots[pointplot]([1,2,3,4],[5,4,7,8],color=["Red","Blue","Magenta","Pink"]);
 

And I want to connect each other with line segments:

But this doesn't work:

plots[pointplot]([1,2,3,4],[5,4,7,8],color=["Red","Blue","Magenta","Pink"],connect=true);

Error, (in plots/pointplot) number of colors must match number of points
 


I wanted to try this example of Maple's help, but it gives an error message:

restart;

with(algcurves);

f := y^2-x*(x^2-1);

plot_real_curve(f, x, y, showArrows = true);


Error, (in algcurves/CurvePlot:-PlotRealCurve) too many levels of recursion

2 3 4 5 6 7 8 Page 4 of 8