DCLTRF(1)

NAME
dcltrf - list available DCL coordinate transformation numbers and names

SYNOPSIS
dcltrf [ transformation_number ]

DESCRIPTION
dcltrf is a utility program included in the GFD Dennou Club Library (DCL). It lists the defined Normalization Transformation Numbers (NTR) and their descriptions. In DCL, coordinate systems (such as linear, logarithmic, or various map projections) are managed via integer IDs called Transformation Numbers (NTR). This utility helps users identify which ID corresponds to which coordinate system.

  Operation

•   If executed without arguments, it scans transformation numbers from 1 to 99 and prints the details of all defined transformations.

•   If a transformation_number is provided as an argument, it displays information only for that specific ID. If the ID is not defined, an error message is displayed.

  Output Format
The output consists of the ID, a short code (3 characters), and a description (20 characters):

    NTR = id ; code ; description ;

OPTIONS

transformation_number
    An integer between 1 and 99. If specified, details for only this transformation are shown.

dcltrf also accepts standard DCL runtime parameters via command-line options.

EXAMPLES
To list all available transformations:

    $ dcltrf
     NTR = 1 ; C ; CARTESIAN ;
     NTR = 2 ; X ; X-LOG ;
     NTR = 3 ; Y ; Y-LOG ;
     NTR = 4 ; XY ; LOG-LOG ;
     ...

To check the definition of transformation number 10:

    $ dcltrf 10
     NTR = 10 ; CYL ; CYLINDRICAL ;

AUTHORS
Youhei SASAKI <uwabami@gfd-dennou.org>, GFD Dennou Club

SEE ALSO
dclpara(1), dclconfig(1)