# Difference between revisions of "Compound nomograph"

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== Compound nomograph == | == Compound nomograph == | ||

Often one needs to show graphically relationship between four or more variables. Line nomographs with | Often one needs to show graphically relationship between four or more variables. Line nomographs with | ||

− | line scales (not grid) can tie together three variables. If more variables are to be shown one must | + | line scales (not grid) can tie together three variables. If more variables are to be shown, one must |

− | use either grid nomographs, contour blocks or | + | use either grid nomographs, contour blocks or comppose a compound nomograph. |

− | Compound nomograph is nomograph that is constructed from blocks that each relate variables with a single | + | Compound nomograph is a nomograph that is constructed from blocks that each relate variables with a single |

line. In practice this means splitting a single equation to many equations, each having variables for one | line. In practice this means splitting a single equation to many equations, each having variables for one | ||

block. In the following Fig. is illustrated the basic idea: | block. In the following Fig. is illustrated the basic idea: |

## Revision as of 19:36, 5 September 2008

## Compound nomograph

Often one needs to show graphically relationship between four or more variables. Line nomographs with line scales (not grid) can tie together three variables. If more variables are to be shown, one must use either grid nomographs, contour blocks or comppose a compound nomograph.

Compound nomograph is a nomograph that is constructed from blocks that each relate variables with a single line. In practice this means splitting a single equation to many equations, each having variables for one block. In the following Fig. is illustrated the basic idea:

Two blocks are defined and a 'tag' is defined to align proper scales with each other.