Thu, 03/23/2023 - 09:43
Dear all
I did images in B and R of a star and uploaded to aavso
I would like to see the difference of shape in the two lightcurves by superimposing the 2 LC
I do not know how to do.
Thanks for the process
Regards
Jean
Tool -> Magnitude baseline shifter
Thank for your…
Dear Degen
Thank for your answer, but you mean using a plugin ?
When I click on the button, an error message appears "error reading remote plugin information"
I cannot install any plugins
Jean
Did I understand right, that you already loaded two light curves and want to shift one upon other? If yes - use plugin after its updating and re-opening VStar:
https://www.aavso.org/vstar-plugin-library
If not - use firstly "add to current" option (in File -> New star from... menu) for loading additional dataset.
Thanks for replying Degen.
Jean, your plugin URL may be old. Go to File -> Preferences -> Plug-ins and click the Set Defaults button.
Also obviously ensure you have an Internet connection at the time.
David
Thanks to you David, I would not have found without you two ! many thanks !
Regards
Jean
Glad we were able to help Jean.
David
yes Degen you are right, I want to shift one LC on another to see visually the changes, thanks a lot !
well the plugins 'magnitude shift" works very well thanks but how to do a date shift ?
as the two LC are from different dates ?
Best
Jean
Hi Jean
There are plans to do this. For example, see:
There are plans to do many things limited primarily by:
We try to be fairly reactive to needs as they arise, and of course bug fixes take priority much of the time, but the more we hear the need for a particular feature, the sooner it is likely to be implemented. There are also at times issues we just find interesting and worthwhile that will also be worked on and sometimes anticipate user needs before they have been expressed, e.g. the observation transformer class of plugins.
A new release has steadily been worked on since mid last year. So, stay tuned but definitely let us know what features should be prioritised.
David
Dear David
Thanks... I understand that this time-shift is not already done but it will be one day...
I stay tuned of updates
Best
Jean
As a last resort we can use brute force - add offset to dates in the datasheet :)
A palliative solution: Flexible Format Reader #DATEADD directive:
#DATEADD=(value to be added to date values, default = 0.0)
May appear in any line (i.e. to change the value to be added to dates)
Example (MJD is converted to JD with “#DATEADD” directive):
#NAME=T Umi
#data from NSVS (MJD)
#DELIM=tab
#FIELDS=time,mag,magerr
#DATE=JD
#DATEADD=2450000.5
1318.163916 8.697 0.01 0
1318.164236 8.683 0.01 0
1318.219486 8.664 0.01 0
1318.219806 8.655 0.01 0
1325.211736 8.791 0.01 0
1325.212046 8.793 0.01 0
...