TRiP98 HLUT command

hlut | file / import()   list      num()             debug
              export()   delete    eqvpathlength()
              read       display
              write      inspect

Purpose

Parameters

file

Name of a file which contains a HLUT table. May contain environment variables. Usually Hounsfield Look-Up tables have the extension .hlut

import()

Not yet implemented.

export(fmt)

Exports current HLUT table in some other format, at present only gd is implemented to export for the gd plot program.

read

Read a HLUT table specified by file.

write

Write the current HLUT table to file

list

Lists loaded HLUT table.

delete

Deletes the loaded HLUT table.

display

Displays the current HLUT table. Not yet implemented.

inspect

Show some internal info about the current HLUT table.

num(hf)

Interpolate water-equivalent path length for the Hounsfield number hf.

eqvpathlength(len)

Interpolate the Hounsfield number for the water-equivalent path length len.

debug

Debug switch. Lots of output!

Remark

Examples

1. hlut $TRIP98/DATA/*.hlut /read
   

   Reads all files in the directory "$TRIP98/DATA" with the extension ".hlut" and interpretes them as HLUT tables. The last one read will replace all previous ones and become the currently loaded table.

2. hlut / num(-41)
   hlut / eqv(1)
   

   First interpolate the equivalent path length for the CT number -41, the the CT number for equivalent path length 1.