I had started to create a procedure for finding the centroid of a list of points.

Centroid := proc (list)
local a, centroid, x, y, i:
a := nops(list):
x := 0:
yi := 0:
for i from 1 to a do
x := x+list[i, 1]:
y := y+list[i, 2]:
end do:
print(`Centroid is at`,([xi, yi]/a)):
end proc:

But I thought there needs to be something simpler than that.  And here we are.

Centroid2 := proc (list)
local i:
print(`Centroid is at`, add(i, i = list...

Happy Dominion Day.  

acer

There exists a broken link on the last post here http://www.mapleprimes.com/posts/41183-Tip-Transpose-A-Pair-Of-Indices-Of-An-Array?r=76538 

Having Maple 12 I try to use concurrent gfun version 3.52 and have problems
to run an example (from a lecture):

libname:= "D:\\_Work\\Maple_Work\\z_Packages\\gfun", libname; # my setting

with(gfun) : gfun:-version();
with(NumGfun) :
                                 3.52

  restart; interface(version); Digits:=14;

    Classic Worksheet Interface, Maple 12.02, Windows, Dec 10 2008 Build ID 377066

  f:= x -> (x+1)^(x+1);
  simplify(int(f(x),x)): 
  F:=unapply(%,x);
                                        (x + 1)

The term “from months to days” is a favorite slogan of mine and I have relied on it religiously for over two decades to illustrate the fundamental benefit of symbolic computation. Whether it’s the efficient development of complex physical models using MapleSim, or exploration of parametric design surface equations (my dissertation) using good old fashioned Maple V Release 2, the punch that symbolic computation provided was to automate the algebraic mechanics...

The final SCR dropdown menu, showing the choice of versioned products against which the Softwware Change Request is submitted, doesn't yet (06/29/2010) include Maple 14.

An improvement which would make many applications involving Components a lot better would be if an "image" were a first-class object in Maple. That is to say, if an image object could be used in Components without having to refer to an external file.

It's a big weakness in Maple's functionality, that things like the following don't work.

bar:=ImageTools:-Create(...);

DocumentTools:-SetProperty(Label0,image,bar);

The above is just an...

The Popular Post and Popular Question badges require 1000 different people to view the Post or Question. A number of Posts and Questions show that they have over 1000 views, but their creators haven't received the badge. This is because the count currently displayed includes all views of the page, including repeats from the same Member or IP address.

I just published an update that now allows you to hover over the view counter and have the number of unique viewers appear in a tooltip. This should be useful for people curious to see how close they are to earning those two badges.

Christopher2222's recent post reminded me of a new plot feature that inadvertently (and through my own fault) got left out of the new-features help pages. The 'filled' option now takes a true/false value or a list of suboptions. The suboptions apply to the polygons that make up the filled region under the curve.

plot(x^2, x=0..1, color="NavyBlue", thickness=3, filled=[color="Blue", transparency=0.7]);

Different...

I was able to find over 1000 files that were missing from the new MaplePrimes. I did some spot checking and it appears that the vast majority of files are now intact. 

I did see some posts where the files are still missing. If I come across a backup containing additional files, I will restore them as well and post about the recovery here.

Yesterday I have came across with this thread, while browsing the list of "Unanswered Questions". As it started quite recently (May 11) I did remember that I have posted some answers there. So I inspected it and found the already classical problem that all the answers were not taken into account just because they were classified as "Comment". Once more, I note that answering in Primes 1...

Currently, using Explore results in a new worksheet which contains all the sliders and output components.

And there is code, which makes it all "work", that gets hidden in that new worksheet. But It's very awkward to copy those Components back to the original worksheet, because of the disassociation with the working code.

If, instead of having dependent code be hidden in that new worksheet in collapsed Document blocks, all the working code were instead inlined...