nraonrao
 
 NRAO Home > CASA > CasaDocument
image.maxfit - Function

1.1.1 Find maximum and do parabolic fit in the sky
Description

This function finds the pixel with the maximum value in the region, and then uses function findsources to generate a Componentlist with one component. The component will be of type Point (point=T) or Gaussian (point=F).

If negfind=F the maximum pixel value is found in the region and fit. If negfind=T the absolute maximum pixel value is found in the region and fit.

See function findsources for a description of arguments point and width.

See also the function fitsky.

Arguments





Inputs

region

The 2-D region of interest to fit. Default is whole image.

allowed:

any

Default:

record

point

Find only point sources?

allowed:

bool

Default:

true

width

Half-width of fit grid when point=F

allowed:

int

Default:

5

negfind

Find negative sources as well as positive?

allowed:

bool

Default:

false

list

List the fitted parameters to the logger?

allowed:

bool

Default:

true

Returns
anyrecord

Example

"""  
#  
print "\t----\t maxfit Ex 1 \t----"  
ia.maketestimage()  
clrec = ia.maxfit()  
print clrec          # There is only one component  
ia.close()  
#  
"""

Please send any comments or questions about CASA or AIPS++ to aips2-requests@nrao.edu

Copyright © 2007 Associated Universities Inc., Washington, D.C.

This code is available under the terms of the GNU General Public Lincense


Home | Contact Us | Directories | Site Map | Help | Privacy Policy | Search

Updated daily during alpha development.