Christopher2222

MaplePrimes Activity


These are replies submitted by Christopher2222

Did you catch this one.  It appears more real than just a glitch.   

http://www.mapleprimes.com/questions/89420-Is-Histogram-Default-Still-Displayed-Incorrectly-In-Maple-14

It displays 13 hours ago on the recent page

but yet the last action comment was 3 hours ago. 

Will this be fixed soon?

I should have added more info

a := [1, 3, 4, 6, 7, 8, 9, 4, 5, 9, 8]

b := Histogram(a, binwidth = 1, frequencyscale = absolute)

op(b)

   POLYGONS([[1., 0], [2., 0], [2., 1], [1., 1]], [[2., 0], [3., 0], [3., 0], [2., 0]], [[3., 0], [4., 0], [4., 1], [3., 1]], [[4., 0], [5., 0], [5., 2], [4., 2]], [[5., 0], [6., 0], [6., 1], [5., 1]], [[6., 0], [7., 0], [7., 1], [6., 1]], [[7., 0], [8., 0], [8., 1], [7., 1]], [[8., 0], [9., 0], [9., 4], [8., 4]], COLOUR(HSV, .5476190475, 1.000000000, .7000000000))

nops(op(1,b))
               9

So now I found a way to extract it into a list

g := [seq(op([1, i], b), i = 1 .. nops(op(1, b))-1)]

g := [[[1., 0], [2., 0], [2., 1], [1., 1]], [[2., 0], [3., 0], [3., 0], [2., 0]], [[3., 0], [4., 0], [4., 1], [3., 1]], [[4., 0], [5., 0], [5., 2], [4., 2]], [[5., 0], [6., 0], [6., 1], [5., 1]], [[6., 0], [7., 0], [7., 1], [6., 1]], [[7., 0], [8., 0], [8., 1], [7., 1]], [[8., 0], [9., 0], [9., 4], [8., 4]]]

And now I'm trying to take the max in the second position of each set of sets. 
So the 2nd position max of [[1., 0], [2., 0], [2., 1], [1., 1]] and the max of the next set ... etc..

And I should end up with  1,0,1,2,1,1,1,4

How can I do that?

Okay, I've submitted an SCR. 

Okay, I've submitted an SCR. 

Check this post I recently commented to http://www.mapleprimes.com/questions/89335-Why-Are-Histogram-Bar-Widths-Not-Consistent

Last action says 2 hours ago but yet my commented post was 49 minutes ago.  And therefore the last action date value is not being correctly updated.

Thanks.  Looks good. 

Now if I had two different datasets, I would need to manually create a few intermediary datasets and plot them in sequence if I wanted to observe something similar.

Thanks.  Looks good. 

Now if I had two different datasets, I would need to manually create a few intermediary datasets and plot them in sequence if I wanted to observe something similar.

Okay, thanks for the explanation.

Okay, thanks for the explanation.

In other words, I want Maple to animate or show a smooth transition of a line x^2 to another line x^3.  Or for the other complex example I mentioned above.

As a more complex example, how about x^2 to sin(x) ?

Okay somewhat works but I want the negative axies to show it morphing downward.

Here is another link for missing images http://www.mapleprimes.com/questions/87786-Smoothing-Data-Points-

 And another http://www.mapleprimes.com/questions/37587-2d-Contourplot-From-Pointplot3d also the links are dead for file.

I found another broken link as well pulled up by the mapleprimes search engine when searching for histograms.

http://www.mapleprimes.com/taxonomy/term/65?page=70 

There's still lots of old posts clogging up the new ones. I hope it's fixed very soon. I don't particularly want to read, or accidentally reply to an old post (like I already have) again unless I'm looking for a particular topic. It's rather a nuissance. And it looks like entered spaces are all congested into one long sentence, let's see after I post this, this purposely long sentence has 2 space enters for reference purposes only.
A small digression ... It is ironic you should mention using atmospheric noise being used as a random number generator. Just on the weekend I was thinking about the random pattern of raindrops as they left their mark on a cement sidewalk. Although would it really be random if it was at the side of the building and the wind was blowing? The rain would fall into a specific pattern and land into some normal distribution pattern. You could also surmize something similar with electronic noise and the effect of outside influences. Random is strange, hah, kind of fits nicely with Quantum Physics. It begs the question of how much order is there in randomness. Just as you shake a bolt around in a jar it is in some chaotic position. Add a nut and at some point there is the likelyhood however unlikely that the chaotic jumbling of parts will form some kind of order and the nut will have somehow attached itself to the threads, however improbable that may be. Increase the number of parts and it becomes infinitely impossible that they would all form some sort of order. Like, for example, all the parts of a Rolls Royce, how long would you have to jumble them around before you have yourself a nice Rolls Royce? Impossible? or highly unlikely? .... Wooops, I just noticed this is an old post. In any case I had a nice little digression.
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