Elegant users forum

good afternoon,

I have the output of a WATCH file ("output.w3" for example) that takes coordinates of the particles in the bunch at every turn. I can plot it properly and navigate between the various turns using sddsplot.

In order to post-process the data, I would like to convert the file into a csv file. I do then, as the SDDS manual recommends:

sddsprintout -spreadsheet=csv -column=* output.w3 output.csv

however, instead of having several distinct pages, the csv file has only one massive page with all the pages of the sdds file. Is there a way to separate the pages in the csv files. I have used -paginate, which doesn't seem to help.

Try it with the -postPageLines=1 option.

You can split the file into separate files first, then convert to csv. E.g., assuming use of the bash shell There are also SDDS extensions for many programming languages, so you can read SDDS files directly; this is much more efficient for large files. Finally, the SDDS toolkit can perform many postprocessing functions directly with SDDS files.

--Michael

Thanks Michael and Soliday for your answers, I managed to write a little piece of code to do it, with the help of the method you showed.

I am sharing it in case it may help others.


The purpose was to post-process the csv files in Python.

There's a library for reading SDDS files directly into python. Look on
https://www1.aps.anl.gov/Accelerator-Op ... s/Software

--Michael

Excellent, thanks Michael. This will definitely be helpful.

regards,

- Faissal