** File: TPSheet6.hlp
** Index: 26

** Sheet View's Math Menu Commands


Û  Math menu

    This menu contains commands that
perform advance mathematical calculations.
These calculations include interpolation,
curve fitting, data smoothing, digital
filtering and many more.


Û  Interpolation
    See TpSht_01.hlp (Index 40).

Û  Fitting
    See TpSht_01.hlp (Index 40).

Û  Fourier Transform
    See TpSht_02.hlp (Index 41).

Û  Windowing
    See TpSht_02.hlp (Index 41).

Û  Filtering
    See TpSht_03.hlp (Index 42).

Û  Smoothing
    See TpSht_03.hlp (Index 42).


Û  Transformation

    The Math | Transformation command lets
you perform mathematical transformation of
columns.  This command displays the
Transformation dialog box.  The
Transformation dialog box contains the
following fields:

  Formula:  Enter the transformation
    formula. The syntax for equation input
    is described in Section 6.4.2 and
    Section 6.6.
  IndColumn List:  List of columns of the
    data sheet.  Use this to select all
    columns that are used in the
    transformation.
  DesCol Pos:  Set the destination column
    position.

    In the function string, the left side
of the '=' is the column name to be used
to store data after transformation.  All
the variables on the right side of '='
(independent variables) must be a column
name which already exist in the current
data sheet.  

Note: You need to mark all the independent
variables in the column list.  This is to
declare independent variables you want to
use for the transformation.


Û  Differential

    This command takes the numerical
derivative of one column with respect to
another column.


Û  Integral

    Calculate the numerical integral of
two columns.  This can be used to compute
the area under a curve.


Û  Special

    Under this menu, there are three
special mathematical calculations:

Û  Histogram

    This command lets you create histogram
  data based on a column of data.
  Histogram data is created based on
  experimental data.  The X axis of a
  histogram shows the range of values of
  the experiment.  The Y axis of the
  histogram shows how many times each of
  the value occurs.  The number of
  intervals for the X axis is specified in
  the Create Histogram Data dialog box by
  the value field IntvlNum.

Û  3D Histogram

    This command displays the Create 3D
  Histogram Data dialog box. A 3D histogram
  data is created based on experimental
  data with pairs of (X,Y) values.  The X
  axis of a 3D histogram shows the range of
  X-values of the experiment and the Y axis
  of a 3D histogram shows the range of
  Y-values of the experiment.  The Z axis
  of the 3D histogram shows how many times
  each of the (X,Y) value occurs.  The
  numbers of intervals for X and Y axes are
  specified in the Create 3D Histogram Data
  dialog box by the value fields xMeshNum
  and yMeshNum.

Û  3D Mesh Data

    This command creates 3D mesh data using
  the inverse distance weighting method for
  xyz-triplet scattered data.
