replace.pro

NRAO GBTIDL
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replace.pro

Last modification date:: Wed Sep 28 13:27:09 2016

replace

procedure replace[, bchan][, echan], [/zero], [/blank]

Replace spectral channels by interpolation, or with zero values or blanks. If neither zero or blank are set, the data between bchan and echan are replaced with a straight line connecting the two end points. If neither bchan or echan are given the user is prompted select the region to be replaced on the plotter.

Examples: getrec,1 chan ; set the X-axis to channels replace,1023,1025 ; replace the channel range 1023-1025 freq ; set the X-axis to GHz replace ; prompt user for ranges and replace the values replace,15,/zero ; set the data value at channel 15 to 0.0 replace,2014,/blank; set the data value at channel 2014 to NaN
Version: $Id$
Common blocks: gbtplot_common

Parameters

bchan
in, optional
float Starting channel. If this is a floating point value it is first rounded (using the IDL round function) before being used.

echan
in, optional
float Ending channel. If this is a floating point value it is first rounded (using the IDL round function) before being used.

Keywords

zero
in, optional
boolean If this keyword is set, the data are replaced with zero values. Otherwise, the replacement data values are interpolated from the endpoints.

blank
in, optional
boolean If this keyword is set, the data are replaced by IEEE NaN (not a number). Such values are treated as missing data (not used in operations, not shown on the plotter, etc). If both blank and zero are set, zero takes precedence and the data will not be blanked.

Produced by IDLdoc 1.6 on Wed Sep 28 13:27:36 2016

Parameters
bchan in, optional float	Starting channel. If this is a floating point value it is first rounded (using the IDL round function) before being used.
echan in, optional float	Ending channel. If this is a floating point value it is first rounded (using the IDL round function) before being used.

Keywords
zero in, optional boolean	If this keyword is set, the data are replaced with zero values. Otherwise, the replacement data values are interpolated from the endpoints.
blank in, optional boolean	If this keyword is set, the data are replaced by IEEE NaN (not a number). Such values are treated as missing data (not used in operations, not shown on the plotter, etc). If both blank and zero are set, zero takes precedence and the data will not be blanked.