6 years, 94 days

## plot3d a surface...

Hi All,

I would like to plot3d a function say z=f(x,y). x=0..1, y=0..1.

But I only want to display a surface of the plots, say z=0.1. Is there any simple function to do that?

I am looking for soemthing like: plot3d(f(x,y)=0.1, x=0..1,y=0..1)

thanks.

## extract points on the plots (satisfying ...

Maple

Hi All,

I am thinking is there any simple function that could extract part of the points that have been ploted by plot() or plot3d(). And more ideally, we can specify some constraints such that the points being extracted must satisfy.

I guess Maple must stored the points somewhere in the memory in some kinds of data structure....

thanks.

## How to generate a sequence of points tha...

Maple 2017

Hi All,

I would like to generate a sequence (say 10) of points <x_i,y_i>. (i=1, 2,..,10.)

There is a predefined constraint like f(x_i,y_i)=0.01. And I don't know the close form of f() (becasue there is a intermediate parameter in f() that was caculated numerically by optimization.).

Is there any simple function, e.g. a variant of seq(), that can do this? I am looking for something looks like:

seq(f(x,y)=0.01, x=0..1, y=0..1, 0.1)

Thanks.

## Only plot integer points...

Maple

Hi, i want to plot a function say R(t,n),

plot(R(t), t = 500 .. 50000) how can specify the t can only take intger value in the range of [500, 50000]?

I am looking for something like :plot(R(t), t = 500 .. 50000, assume=integer)

## Navie quesion: for all item in a vector....

Maple

I have a vector P_X

I want to use it in the constraint of Maple optimization, that all item in P_X is smaller than 1. I am looking for some expression looks like: all(P_X[i]<1,i=1..10)

Thanks.

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