Example:compound nomograph 2

Compound nomograph example 2

In this example we construct compound nomograph of equation

[math]q = u^v + w. \,[/math]

This example is taken from . The equation is split into two equations that each are blocks:

[math]\log (r) = v \log (u) \,\,\,\,\,\,\,[/math]	type 2
[math]q-w-r=0 \,\,\,\,\,\,\,[/math]	type 1

Because one equation has r and other log(r), we need to use ladders, that are type 6. Ladders are ugly and we use them because there is no other choice (if we forget "contour" = type 5.)

Simple example

Compound nomograph: example 2
Generated portable document file (pdf):	File:Ex compound nomo 2.pdf

Source code of simple compound nomograph example

"""
    ex_compound_nomo_2.py
 
    Compound nomograph: q = u**v+w
 
    Copyright (C) 2007-2008  Leif Roschier
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
"""
from nomographer import *
 
# N
u_params={
        'u_min':1.0,
        'u_max':10.0,
        'function':lambda u:log(u),
        'title':r'$u$',
        'tick_levels':3,
        'tick_text_levels':1,
        'tick_side':'left',
                }
 
v_params={
        'u_min':0.1,
        'u_max':20.0,
        'function':lambda v:1.0/v,
        'title':r'$v$',
        'scale_type':'log',
        'tick_levels':0,
        'tick_text_levels':0,
        'extra_params':[{
                'u_min':0.1,
                'u_max':0.9,
                'tick_levels':3,
                'tick_text_levels':2,
                'tick_side':'left'
                },
                {
                'u_min':1.0,
                'u_max':20.0,
                'tick_levels':4,
                'tick_text_levels':2,
                'tick_side':'right'
                }
                ]
                }
 
R_params={
        'u_min':1.0,
        'u_max':10.0,
        'function':lambda r:log(r),
        'title':r'',
        'tick_levels':0,
        'tick_text_levels':0,
        'tag':'ra',
                }
 
block_params_1={
             'block_type':'type_2',
             'width':10.0,
             'height':10.0,
             'f1_params':u_params,
             'f2_params':v_params,
             'f3_params':R_params,
             }
# Ladder
R_params_a={
        'u_min':1.0,
        'u_max':10.0,
        'function':lambda u:log(u),
        'title':'r',
        'tick_levels':3,
        'tick_text_levels':2,
        'tick_side':'left',
        'tag':'ra',
        }
 
R_params_b={
        'u_min':0.0,
        'u_max':10.0,
        'function':lambda u:u,
        'title':'r',
        'tick_levels':3,
        'tick_text_levels':2,
        'tag':'rb'
        }
 
block_params_2={
              'block_type':'type_6',
              'f1_params':R_params_a,
              'f2_params':R_params_b,
              'width':5.0,
              'height':10.0,
              'mirror_x':True,
                     }
# type 1: q-w-r=0
r_params_c={
        'u_min':0.0,
        'u_max':10.0,
        'function':lambda u:-u,
        'title':r'$r$',
        'tick_levels':2,
        'tick_text_levels':1,
        'tag':'rb'
                }
 
w_params={
        'u_min':-10.0,
        'u_max':10.0,
        'function':lambda u:-u,
        'title':r'$w$',
        'tick_levels':2,
        'tick_text_levels':1,
                }
 
q_params={
        'u_min':0.0,
        'u_max':10.0,
        'function':lambda u:u,
        'title':r'$q$',
        'tick_levels':2,
        'tick_text_levels':1,
                }
 
 
block_params_3={
             'block_type':'type_1',
             'width':10.0,
             'height':10.0,
             'f1_params':r_params_c,
             'f2_params':w_params,
             'f3_params':q_params,
             'mirror_x':False
             }
 
main_params={
              'filename':'ex_compound_nomo_2.pdf',
              'paper_height':13.0,
              'paper_width':20.0,
              'block_params':[block_params_1,block_params_2,block_params_3],
              'transformations':[('rotate',0.01),('scale paper',)],
              }
Nomographer(main_params)