graduate

graduate — pretty axis graduations

Calling sequence

[xi,xa,np]=graduate( xmi, xma,n1,n2)   
[xi,xa,np]=graduate( xmi, xma)

Parameters

`xmi,xma`	: real scalars
`n1, n2`	: integers with default values 3,10
`xi, xa`	:real scalars
`np`	: integer

Description

graduate looks for the minimum interval [xi,xa] and a number of tics np such that:

xi <= xmi <= xma <= xa

xa - xi / np = k(10^n),k in [1 3 5] for an integer n

n1 < np < n2

Examples



  y=(0:0.33:145.78)';
  xbasc();plot2d1('enn',0,y)
  [ymn,ymx,np]=graduate(mini(y),maxi(y))
  rect=[1,ymn,prod(size(y)),ymx];
  xbasc();plot2d1('enn',0,y,1,'011',' ',rect,[10,3,10,np])

Author

S. Steer 1992;