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937.

In CP1252 (Windows-1252), 129, 141, 143, 144, and 157 do not have matching characters.

938.

For @{x} from 1 to 255 except 129, 141, 143, 144, and 157 we have CODE(CHAR(@{x}))=@{x}.

939.

CHAR(65) returns A

941.

CHAR:returns the CP1252 (Windows-1252) code point for the given character.

942.

c:which character to return

943.

CODE(@{c}) returns the CP1252 (Windows-1252) code point for character @{c}.

944.

@{c} should be a valid CP1252 (Windows-1252) character.

945.

CODE("A") returns 65

970.

@FUNCTION=INTERPOLATION
@SYNTAX=INTERPOLATION(abscissas,ordinates,targets[,interpolation])
@DESCRIPTION=
INTERPOLATION returns interpolated values corresponding
to the given abscissa targets as a one column matrix.

@abscissas are the absicssas of the data to interpolate.
@ordinates are the ordinates of the data to interpolate.
* Strings and empty cells in @abscissas and @ordinates are simply ignored.
@targets are the abscissas of the interpolated data. If several data
are provided, they must be in the same column, in consecutive cells
@interpolation is the method to be used for the interpolation;
possible values are:
- 0: linear;
- 1: linear with averaging;
- 2: staircase;
- 3: staircase with averaging;
- 4: natural cubic spline;
- 5: natural cubic spline with averaging.

If an averaging method is used, the number of returned values
is one less than the number of targets since the evaluation is made by
averaging the interpolation over the interval between two consecutive data;
in that case, the targets values must be given in increasing order.
@EXAMPLES=

@SEEALSO=PERIODOGRAM

971.

@FUNCTION=PERIODOGRAM
@SYNTAX=PERIODOGRAM(ordinates,[filter,[abscissas,[interpolation,[number]]]])
@DESCRIPTION=
periodogram returns the periodogram of the data
as a one column matrix.

@ordinates are the ordinates of the data to interpolate.
@filter gives the window function to be used. Possible values are:
- 0: no filter (rectangular window);
- 1: Bartlett (triangular window);
- 2: Hahn (cosine window);
- 3: Welch (parabolic window);
@abscissas are the absicssas of the data to interpolate. If no
abscissa is given, it is supposed that the data absicssas are regularly
spaced. Otherwise, an interpolation method will be used to evaluate
regularly spaced data.
* Strings and empty cells in @abscissas and @ordinates are simply ignored.
@interpolation is the method to be used for the interpolation;
possible values are:
- 0: linear;
- 1: linear with averaging;
- 2: staircase;
- 3: staircase with averaging;
- 4: natural cubic spline;
- 5: natural cubic spline with averaging.
@number is the number of interpolated data to be used. If not given,
a default number is automatically evaluated.
@EXAMPLES=

@SEEALSO=INTERPOLATION