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image.modify - Function

1.1.1 Modify image with a model


Description

This function applies a model of the sky to the image. You can add or subtract the model which is contained in a Componentlist tool.

The pixel values are only changed where the total mask (combination of the default pixel mask [if any] and the OTF mask) is good (True). If the computation fails for a particular pixel (e.g. coordinate undefined) that pixel will be masked bad.

Arguments





Inputs

model

Record representation of a ComponentList model

allowed:

record

Default:

region

Region selection. See ”help par.region” for details. Default is to use the full image.

allowed:

any

Default:

variant

mask

Mask to use. See help par.mask. Default is none.

allowed:

any

Default:

variant

subtract

Subtract or add the model

allowed:

bool

Default:

true

list

List informative messages to the logger

allowed:

bool

Default:

true

stretch

Stretch the mask if necessary and possible? See help par.stretch. Default False

allowed:

bool

Default:

false

Returns
bool

Example

 
 
"""  
#  
print "\t----\t modify Ex 1 \t----"  
ia.maketestimage()  
clrec = ia.fitcomponents()  
ia.modify(clrec[’results’])  
ia.close()  
#  
"""  
 
 
 
 
In this example we subtract the model returned by the fitcomponents function.  
 

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