MEFMixin¶

class stginga.plugins.local_plugin_mixin.MEFMixin[source]¶

Mixin class for Ginga local plugin that enables manipulation of multi-extension FITS images.

Methods Summary

`autoload_ginga_image`(filename, extnum, cachekey)	Automatically load a given image extension into Ginga viewer.
`general_mef_settings`(prefs)	Load MEF settings.
`load_dq`(image, header)	Find and load DQ extension.
`load_err`(image, header)	Find and load ERR extension.

Methods Documentation

autoload_ginga_image(filename, extnum, cachekey)[source]¶

Automatically load a given image extension into Ginga viewer.

Parameters:

filenamestr: Image filename.
extnumint: Image extension number.
cachekeystr: Key for Ginga data cache. Usually, this is in the format of prefix[extname, extver].

Returns:

general_mef_settings(prefs)[source]¶

Load MEF settings.

Sets the following internal variables from Ginga’s general user preferences:

self._sci_extname
self._err_extname
self._dq_extname
self._ext_key
self._extver_key
self._ins_key
self._tel_key

Also sets the following:

self._no_keyword

Parameters:

prefsginga.misc.Settings.Preferences: Ginga preferences from self.fv.get_preferences().

load_dq(image, header)[source]¶

Find and load DQ extension.

Special Handling for WFPC2

The DQ file has c1m in its name. However, extension name could be either 'DQ' or 'SCI'.

Parameters:

Returns:

dqsrcginga.AstroImage.AstroImage or False: DQ image associated with given image, if available.

load_err(image, header)[source]¶

Find and load ERR extension.

Note

WFPC2 does not have ERR.

Parameters:

Returns:

errsrcginga.AstroImage.AstroImage or False: ERR image associated with given image, if available.