1044: You code new programs based on random problems from your precalculus textbook (that's what I've been doing since my computer died last weekend).

1045: Booker T. Washington makes you think of Omnimaga (peanuts in particular).

1046: You use "/me" to indicate an action in your posts, even on other forums (this will probably happen to me eventually, I just know it).

1047: You've deliberately caused your TI-83+ to reset its memory at least once.

TI-83+: Parents got it used online.

Huh, whatever was the problem with the code when I first tried it, it's working now that I've added a menu to the program. xD

Thanks for your help though. I might just use your suggestion anyways in this code, it looks much neater than storing the values straight to the matrix.

I was flipping through my pre-calculus textbook the other day and I came across a problem involving cryptography and matrices, specifically something called a Q³₂ Fibonacci encryption matrix. Being the sort of person I am, I immediately decided I needed to code a TI-BASIC program utlizing this method of encryption.
But the only problem is that I can't seem to figure out/remember how to input data into a matrix--I keep getting either ERR: DIM or ERR: DATA TYPE for the key matrix, no matter what I try.

And how would one go about inputting user selected variables into a matrix? I've currently got the following bit of code in my cal for this, but until I can figure out how to input data into a matrix the code remains untested.
:Prompt A,B,C,D,E,F,G,H,I
:[[A,B,C][D,E,F][G,H,I]]->[J]

This is really neat, I'm probably going to be getting a lot of use out of it.
Thanks for sharing the link!

Drawing stuff pixel by pixel takes a LOT of work, time, and patience, things I don't always have, so having an option available to me that gets around that issue is great.

I only joined yesterday, but I've already got two programs in the works, both of which are (probably) going to be completely written in TI-Basic.

The first is Multitab 83+. It is a math program that will allow the user to (quickly) look up the multiplication table on their TI-83+. Currently, all I've got is the name and a (very) rough idea of how the program will work. I've not seen anything like this before, at least for the TI-83+.
DONE!


The second is Chemitab 83+. It is a science program that will allow the user to look up most any element on the periodic table of the elements on their TI-83+. Currently, all I've got is the name and an extremely rough idea of how the program will work. I've seen similar programs to this idea, but the only one that was completely written in Basic that I was able to find used a pic for the table, which prevented me from being able to successfully install the program by hand into my calculator (I don't own a link cable), which in turn has motivated me to create my own periodic table look-up program for the TI-83+.
Version 2.0 coming January 2011


Updates
December 9, 2010 -- Both projects have been temporarily abandoned due to accidentally reseting my calculator's memory and losing all of the coding I had thus far done on these programs.
December 14, 2010 -- Chemitab officially on hold until June 2011; First release of Multitab code for peer review
December 15, 2010 -- Second release of Multitab for peer review
December 17, 2010 -- Multitab 83+ version 1.0 completed.
December 19, 2010 -- Chemitab 83+ version 1.0 completed.
December 28, 2010 -- Chemitab 83+ version 2.0 completed.

I was just thinking that a guide for new members might be useful (I know I would, at the very least!).
Like some sort of FAQ, with answers to questions like "How do edit my profile information?", "Why can't I answer PMs?", that sort of thing.