Class AppMath::Graphs
In: graph.rb
Parent: Object

The code 

  root = TkRoot.new{ title 'Test of ...'}
  g = Graphs.new(root,3,2,1000,700)

generates a 2 times 3 matrix of Graph-objects 

  g.at(0,0), g.at(0,1), g.at(0,2)
  g.at(1,0), g.at(1,1), g.at(1,2)

which together make up a rectangle of 1000 pixels in x-direction and 700 pixels in y-direction. Notice that the matrix is a grid with 3 items in x-direction and 2 items in y-direction. Since these items are of class Graph, the can be used for graphical representations of arrays and of functions without needing suport fom the present class Graphs.

Methods

at   new  

Attributes

grs  [R] 
mx  [R] 
my  [R] 
px  [R] 
py  [R] 

Public Class methods

new(parent,px,py,nx,ny)

[Source]

     # File graph.rb, line 200
200:   def initialize(parent,px,py,nx,ny)
201:     zero = R.c0
202:     one = R.c1
203:     @px = px
204:     @py = py
205:     @mx = nx / @px
206:     @my = ny / @py
207:     ivx = Iv.new(zero,one)
208:     ivy = Iv.new(zero,one)
209:     @grs = Array.new
210:     py.times{ |r|
211:       gr = Array.new
212:       px.times{ |c|
213:         fr = TkFrame.new(parent).grid('row' => r, 'column' => c)
214:         gr << Graph.new(fr,@mx,@my,ivx,ivy)
215:       }
216:       @grs << gr
217:     }
218:   end

Public Instance methods

at(i,j)

Access function. For a Graphs-object g, one has the Graph-objects 

  g.at(i,j), 0 <= i < p.py, 0 <= j < g.px .

All integer values are allowed and these then are understood periodically.

[Source]

     # File graph.rb, line 224
224:   def at(i,j)
225:     return @grs[i.to_i%@py][j.to_i%@px]
226:   end

[Validate]