baseline

NAME

baseline - apply baseline fit

SYNOPSIS

DESCRIPTION

This command applys baseline fit. Polynomial fuction is assumed for real baseline. The channels with spurious flag are not used for fitting. You can use the command interctively with graphical user interface. Also you can use it as batch process with character user interface in the command line.
The command clears all baseline flags in a profile given before. But the command keeps the baseline ranges for profiles shown in the next page.
Without push any button on the menu bar except "next" the command applies baseline fitting actually.

FILTER TYPE

.scn | baseline | .scn

OPTIONS

all X11 standard options, such as -display, are accepted.

-size size_of_window

This option is valid only in the GUI mode. It gives the size of a working window like -geometry but in cm (The system assumes you are using 72 dpi monitor).

-ch channel_range | -v velocity_range

These options are valid only in the GUI mode. The range is composed of two values devided by the character ",". For example

-v -20,60

means velocity ranges from -20 km/s to 60 km/s.
The keyword -v without any velocity range value the command shows the whole profile. The presentation unit is in km/s of the LSR velocity.

-T temperature_range

This option is valid only in the GUI mode. The range is composed of two values devided by the character ",". For example

-T -10,60

means velocity ranges from -10 K to 60 K.

-gui | -nogui | -cui

These option keywords give a mode of the command. The keywords -gui and -nocui give the process interactively. The keywords -cui and -nogui give the process batch-like. In the GUI mode you can assign and change any fitting paramters through a working window which will appear automatically. Most optional parameters are accesible through menu bar on the top of the window. The next button apply the baseline and the system proceeds the next step. See the next section in detail about the GUI mode.

-order fitting_order

It gives fitting order for the polynomical function.

-v_fit ranges | -ch_fit ranges

The keywords -v_fit or -ch_fit gives the ranges for baseline fitting. The ranges is a single word, which means no blank must be included. The value is composed of several (at least 1) ranges devided by the character ":". Each range is composed of two values devided by the character ",". For example

-v_fit -20,30:50,60

means two velocity ranges from -20 km/s to 30 km/s and 50 km/s to 60 km/s are used for fitting.

-v_fit -50,-30:-10.5,0.3:1.4,2.0

means thress velocity ranges.

-keep | -clear

Keep or clear all baseline flags before processing.

-P printer

Printer name to print out. The printer must suport PostScritp.

PARAMETERS

-P option is not supported in the .prm files.

DEFAULTS

-size 15x20 -order 1 -cui -keep -prm baseline.prm
-ch: The working window shows the whole profile range in channel.
-T: The working window shows the whole temperature range which is scaled automatically depending on the maximum and minimum values in the displaying range.
-ch_fit, -v_fit: No fitting range is assigned.

ENVIRONMENT

All environment parameters for X11, such as DISPLAY, are also valid.
PRINTER: printer name for print out. See lpr command of your OS.

GUI

MENU BAR

next
Pass the present profile and go to the next profile. If it is the last, go to the next processing stage of the pipeline. Before do "fit", improper profile data may be passed.
fit
Execute fitting. Before push "next" you should execute "fit".
reshow
Show the processed profile with a green line
order
Change the order of polynomical to fit
clear
Clear all baseline ranges including the original
retry
Cancel the fitting procesure and recover the original profile. If you give "-keep" option, the original baseline ranges are also recovered.
print
Print out the present screen
quit
Stop all processes after this step.
MAIN WINDOW
cross cursor
point for the baseline ranges. Only horizontal position is valid.
Blue line
actual profile
Green line
processed profile
Red line
fitted baseline curve
Cyan boxes
assigned baseline regions. The height of each box is 6 times of rms.
Pink boxes
spurious flagged ranges

BUGS

In GUI mode, if the pipe flow requires more than 2 pages and with other commands using X11, you must also use the command pipewait. See pipewait in detail.
In GUI mode, the "next" button passes improper profile to the next stage before you push the first "fit" for the profile.
In GUI mode, the cross cursor position pointed out of the showing range gives the corresponding out range channel or velocity, although the cyan box is adjusted. Only if the corresponding channel is out of valid channel range (not presenting), the range is adjusted.
The options -ch, -v are effectivly valid only with -gui. The mode is not changed automatically.

HISTORY

ver.1.00: 1995/1/20 T.Oka and O.Kimura
ver.3.25: 1998/5/21 T.Handa

MANUAL VERSION

1998/5/23 T.Handa