How to draw a comparison chart between the current ccf and the reference ccf

[cheshire2cat]

Hello.I want to draw a comparison chart between the current ccf and the reference ccf on a certain day (which is a bit different from the ccftime in the software, only comparing the current ccf and the reference ccf on the desired day), but I found that the current ccf file is a whole (without specifying the ccf for a certain day).

The picture I want to draw is similar to this.

[ThomasLecocq]

Hi,
Which version are you using, the dev version ? or the release 1.6.x version ?

I don't understand what you mean by

but I found that the current ccf file is a whole (without specifying the ccf for a certain day).

[cheshire2cat]

Hello.I am using the dev version. What I mean is to see the comparison between the current cross-correlation function and the reference cross-correlation function for a specific day (which can be chosen by oneself), not the cross-correlation function comparison for many days in the software package (which does not have a direct reference cross-correlation function)