2:19 PM
Russell Blyth: Ready to join the afternoon chat?
Leah Wrenn Berman: hi
Mike May: yes
Harry Mills: Back in 10 minutes.
2:20 PM
Marius Buliga has joined this chat.
Regina Souza has joined this chat.
2:25 PM
David Thomas: I have two questions, when you are ready
Russell Blyth: yes
Russell Blyth: Also, does anyone have a worksheet to send?
Marius Buliga: i sent one by email.
David Thomas: how can you change the default to be maple input, I am 
having a terrible time with input that is a mixture of red and black symbols
Russell Blyth: got it
Parviz Khalili: Is the VNC on
Marius Buliga: ok.
Russell Blyth: yes
Russell Blyth: same address
David Thomas: second question: I was trying to do a loop. How do you get a 
"statement sequence" (I have more than one statement as part of my do loop
Daniel Shown: QT is up:rtsp://165.134.240.35/LA050630pm1.sdp
Parviz Khalili: no sound
Joyce Quella: No sound
2:30 PM
Steve Prothero: no sound
David Thomas: also no sound
Leah Wrenn Berman: no sound here either
Suzanne Riehl: I'm not getting sound. I've tried restarting quicktime.
Marius Buliga: yes, no audio.
Hugh Sanders: No sound here either.
David Huckaby: no sound here either (4 restarts)
Mike May: Audio problems
Russell Blyth: video is on pm1
Russell Blyth: we're up
Mike May: Sound on
Hugh Sanders: OK sound
Derrick Head: David has no sound now, but he heard your comments through 
my machine
2:35 PM
Regina Souza has left this chat.
Derrick Head: Thanks. Actually we have the power to change the Maple 
defaults before we load it on any of our campus machines.
Luz DeAlba has joined this chat.
Suzanne Riehl: Anyone know where the preferences are on Windows?
Dorothy Zeiser has left this chat.
Dorothy Zeiser has joined this chat.
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Leah Wrenn Berman: we'll (Doty, Hellings, Berman) send a Markov 
Chains WS soon
Harry Mills: Achieved the document mode thing in the larger document by 
Hugh and Regina.
Derrick Head: Windows users, the preferences is under Tools-Options
2:40 PM
Derrick Head: Tools-Options-Interface tab-Change first setting "Open 
worksheets in"
Harry Mills: Lots of code. not much to show for it.
Harry Mills: Please re-invite Regina to chat.
Harry Mills: Do you gents have the worksheet VectorsR2R3-Draft4 Mills
Harry Mills: Simply color-coding the octants.
Regina Souza has joined this chat.
Dorothy Zeiser: Please invite Chris Hellings
Regina Souza: thanks
Harry Mills: Fantastic.
Christian Hellings has joined this chat.
Harry Mills: Hugh added some work that's not in that draft. Regina just sent it 
to me. It has what Hugh did in Section 6, at least in pseudocode form.
David Thomas has joined this chat.
Harry Mills: The color here isn't as informative as the car you gents did 
yesterday.
Harry Mills: Regina had some ideas about the color-coding that I'd like to play 
with.
2:45 PM
Harry Mills: One of the problems with collaborating is that some parts are 
missing from some drafts.
Harry Mills: List of colors, yes. I see that.
Harry Mills: color=RGB(rand0to1) do any good?
Russell Blyth: ? try it, perhaps
Harry Mills: Yes. What I have now is ugly, but no time for polish.
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Harry Mills: I'm thinking of something like "mycurrentcolor=RGB(rand0to1)" 
and then using "mycurrentcolor" as a variable to be passed to plot commands, to 
domain and codomain, respectively.
Harry Mills: Regina has a later draft (WITH Hugh's pedagogy and withOUT my 
sections 3 and 5 comments).
Regina Souza: You can highlight the table and evaluate (!)
Regina Souza: I think
2:50 PM
Russell Blyth: pm2
Mike May: Back up
Regina Souza: The only new thing in the worksheet is the use of tables to 
make it easy for students to check what was the input and what maple is doing to 
it
Mike May: I like the new thing. It is a very nice improvement in format.
Regina Souza: then there was an attempt of putting arrows on vectors in 3-
diml space - very elementary stuff
Harry Mills: I used Regina's idea for the graphs in a later section. My idea was 
to superimpose the two, but I deferred to her superior pedagogy.
Dennis Keeler has joined this chat.
Regina Souza: I got it improved now by using cylindrical arrows (they don't 
disappear as you rotate them on 3D)
Harry Mills: No sound.
Harry Mills: We're on pm2.sdp, right?
Russell Blyth: yes
Suzanne Riehl: sound ok
Regina Souza: got sound now
Lynne Doty: ok
Derrick Head: Sound is fine here
Steve Prothero: ok
Mike May: rtsp://165.134.240.35/LA050630pm2.sdp
2:55 PM
Regina Souza: I coudn't handle Input-2D versus Maple Input, so the 
worksheet has a mixture of the two
Regina Souza: nice to rotate
Harry Mills: Thx, Mike. It wasn't a URL issue.
Harry Mills: Sound up.
Regina Souza: That was it - the rest is still code you guys wrote
Suzanne Riehl: Are you entering a specific point to view from? I don't know 
how to do that.
Regina Souza: orientation?
Regina Souza: this is yours
Regina Souza: no modification yet
Regina Souza: 
3:00 PM
Dorothy Zeiser has joined this chat.
Mike May: orientation=[45,70] would be an example
Harry Mills: Yes, you need to execute it, dagnabbit.
Dorothy Zeiser: thanks
Mike May: to get there type plot3d then go to help and selet help onplot3d.
Harry Mills: Maps to a planar subspace. yeah. You can see that i'm getting 
closer to procedurizing this.
Parviz Khalili: That looks nice
Mike May: scroll to the bottom of the page and click on plot2d/options
Harry Mills: Then I invoked MyCloud and ImageOfCloud in Regina's table.
Harry Mills: 22 and 45 works
Harry Mills: Oh. I think I randomized and randomed 'em.
Harry Mills: If you close the procedure subsection, you can see the finished 
product (to date) looks like.
Suzanne Riehl: Did you enter the 22 and 45 on the fly?
Mike May: Yes, though we got it from Harry
Regina Souza: Maybe we could draw the lines of the ``paralelogram'' around 
"IMage of Cloud"
Harry Mills: <-- Open to good questions to ask students.
3:05 PM
Suzanne Riehl: I see the box (finally!)
Harry Mills: Yes, Regina. You'd need to tie the parallelogram to the size of the 
mapping, so to speak.
Suzanne Riehl: Yes
Regina Souza: to work for all examples, yes
Harry Mills: Hugh has added some things to Section 6, if you all want to look 
at it. I can send you the file.
Regina Souza: neat
Marius Buliga: the angle is not great
3:10 PM
Marius Buliga: i see. it makes sense.
Parviz Khalili: It would be nice to draw the plane of the first and second
Marius Buliga: yes, that's a good point.
Harry Mills: Heh. When _I_ do loops, I use a single space for indentation. By 
the time I'm done, I wind up with a jillion nestings. Tabbing would take me right 
off the page!
David Thomas: what is the od in the do loop
Mike May: I would do the plane as a parameterized surface of linear 
combinations
Harry Mills: od says to end the do
Marius Buliga: an fi the end of if
Harry Mills: I was hearing you say "fi" and wondered where the angle came 
from.
Harry Mills: phi.
3:15 PM
Marius Buliga: i didn't know how to graph it.
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Marius Buliga: yes.
Marius Buliga: i see. thank you.
Regina Souza: is this worksheet posted?
Russell Blyth: pm3 is up
Parviz Khalili: It would be nice to talk about coordinates of vectors here to 
make a connection to R^2 and R^3
Mike May: Any Questions?
Suzanne Riehl: "I would do the plane as a parameterized surface of linear 
combinations" --What do you mean Mike?
Mike May: Russell suggested a cloud of points. I am thinking of graphing a 
parametrixed surface. Something like f(s,t) = s*v1+t*v2.
3:20 PM
Mike May: This would work from any pair of vectors and be scaled to the size 
of the vectors
Regina Souza: can you specify the range of s and t?
Mike May: Yes. I will try to find an example.
Joyce Quella: can you truncate the decimals so it shows only 3 or 4 digits ?
Parviz Khalili: can we just type Digits:=4
Leah Wrenn Berman: only if you want to lose precision on all 
calculations, i htink
Mike May: Digits is global and will muck up all computations.
3:25 PM
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Leah Wrenn Berman: nice
Mike May: Instead use c4 := evalf(variable,4)
Harry Mills has joined this chat.
Leah Wrenn Berman: maple didn't seem to complain on my 
computer 
Harry Mills: Finally got sound back after 15 minute gap.
3:30 PM
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Leah Wrenn Berman: typo there
3:35 PM
David Huckaby: Great visualization!
Parviz Khalili: That is very nice I liked it
Harry Mills: Yes, it's a goodie!
Todd Ashby: VEry nice visualization.
Harry Mills: Convergence to a steady-state, very nicely rendered.
Leah Wrenn Berman: should be ok
Luz DeAlba: I would agree to all positive comments!
3:40 PM
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Leah Wrenn Berman: typo: ex 4 should read find the steady state 
vector for the situation of *exercise* 1
3:45 PM
Russell Blyth: video down
Russell Blyth: pm4 is up
Regina Souza has joined this chat.
3:50 PM
Parviz Khalili: I guess we can use this to highlight a bounded domain in R^2? 
for example bounded by three lines
Christian Hellings: I'm really liking how you can use "display" to combine all 
sorts of images together.
Steve Prothero: can you show us what different transp levels look like?
3:55 PM
Steve Prothero: thanx
Harry Mills: Will we have access to VectorsAndPlanes.mw?
Parviz Khalili: Nice. Thanks
Harry Mills: Without objection.
Leah Wrenn Berman: feel free to post the markov chains WS
Steve Prothero: Are the participant worksheets going to be avaiable via email 
as the others have been?
Marius Buliga: no problem.
Harry Mills: Hugh?
Harry Mills: We didn't get to your latest work on Section 6.
Hugh Sanders: Yes, that would be good.
Regina Souza: shoudn't we polishe it a bit?
Harry Mills: I'm slammed, Regina.
Regina Souza: (my section, not yours)
Harry Mills: I will be polishing this stuff in coming weeks, but this week is a 
toughie.
Hugh Sanders: Yes, I'll do work on my part tonight.
Harry Mills: Let's do it that way, H and R.
Regina Souza: ok
Hugh Sanders: OK
Harry Mills: I'll probably end up polishing my own stuff. Then after the a.m. 
session we can decide who/how to put all our stuff together into one sheet.
4:00 PM
Regina Souza: ok
Hugh Sanders: Fine
David Thomas has left this chat.
Parviz Khalili: See you guys tomorrow.
Frank Rooney has left this chat.
Leah Wrenn Berman has left this chat.
Regina Souza: please post this last worksheet on web
Steve Prothero: G'day
Joyce Quella: very enjoyable day
Michael Siddoway: Thanks
Mike May: yes, see you tomorrow
Harry Mills: See you tomorrow, then one and all.
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Harry Mills: )
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Hugh Sanders: OK
Steve Prothero has left this chat.
David Huckaby has left this chat.
Regina Souza: bye
Hugh Sanders: Bye
Joyce Quella has left this chat.
Dorothy Zeiser has left this chat.
Regina Souza has left this chat.
Marius Buliga: see you.
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