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TI software to display a matrix as a graph and perform several operations (dictionary, closure, edge search with the ford bellman algorithm). Written in 2007 for mathematical exams, as a helper tool, and as a project for the computer science exams.

Binary compiled with TIGCC http://tigcc.ticalc.org/

The following documentation has been created using a TI-89 titanium, some instructions may vary depending on your TI model.

screenshot

Build

For TI calculator

  • Install tigcc and export the TIGCC environement variable
mkdir tigcc
wget http://tigcc.ticalc.org/linux/tigcc_bin.tar.bz2
tar -xjf tigcc_bin.tar.bz2 -C tigcc
export TIGCC=~/tigcc

The software can now be build with make

make

For PC

A makefile is provided for PC build

make -f Makefile_PC

Usage

Send the binary to the calculator

Send the binary to the calculator via the calble or to an emulator like tiemu.

to install tiemu under ubuntu, run:

sudo apt install tiemu

For the TI89, the file to use is mtograph.89z

Create a matrix using the Data/Matrix Editor

Matrix are created using the calculator's internal Data/Matrix Editor application.

Open this application via the main APP menu, then in the dialog menu select new, then under type select matrix. Under the variable field, enter the name of the new matrix, for example m.

Note that the matrix must be square (same number of rows and cols). In row and Col dimension enter 4 in each field.

edit the matrix with values that you need.

Run

Under the HOME app, type mtograph() or use the var-link menu then select mtograph.

the matrix can be given as an argument, mtograph(m), if no arguments are provided, mtograph start by displaying an open dialog to select a matrix. We will select the previously created matrix m.

The nodes can be re-organized interactivly with the 'move node' menu