so check this out... http://www.math.gatech.edu/~berglund/teaching/computerproject.html i have to create this map to represent the different elevations and then create the various trails shown on the third figure in red. And you have to create the entire grid using a piecewise function. how exactly do you do this? i have no clue how to even get started with maple let alone create a whole new map and all. is there anyone who is really skilled at this type of work who can help me? i'm sure for you guys this is like a piece of cake, but for me...i'm totally clueless. help please!