delval(filename, keyword, *args, **kwargs)
Name of the FITS file, or file object If opened, mode must be update (rb+). An opened file object or GzipFile
object will be closed upon return.
Keyword name or index
The rest of the arguments are for extension specification. See getdata
for explanations/examples.
Any additional keyword arguments to be passed to astropy.io.fits.open
. Note: This function automatically specifies do_not_scale_image_data
= True
when opening the file so that values can be retrieved from the unmodified header.
Delete all instances of keyword from a header in a FITS file.
Hover to see nodes names; edges to Self not shown, Caped at 50 nodes.
Using a canvas is more power efficient and can get hundred of nodes ; but does not allow hyperlinks; , arrows or text (beyond on hover)
SVG is more flexible but power hungry; and does not scale well to 50 + nodes.
All aboves nodes referred to, (or are referred from) current nodes; Edges from Self to other have been omitted (or all nodes would be connected to the central node "self" which is not useful). Nodes are colored by the library they belong to, and scaled with the number of references pointing them