Export a Cinema Database from ParaView 5.7 using the Nyx Tutorial Dataset

Workflow

Setup ParaView GUI with the dataset

• Clone the tutorial repository:
  • git clone https://github.com/cinemascience/cinema_tutorial_2019-11_SC.git
• Open ParaView 5.7.1 GUI
• Select File -> Load State command
• Navigate to the cinema_tutorial_2019-11_SC directory and select loadNyxDataset.pvsm state file.
  
• For the Load State Options, you will need to choose Search files under specified directory and navigate to the nyxTutorialDataset/ folder to select nyx.pvd.
• In the Pipeline Browser, click to highlight nxy.pvd

Setup and export the Cinema database

• Under View, select Export Inspector (if needed)
• Select Export Inspector tab
• Under Image Extracts, select the choices from the dropdown menus:

RenderView1         Cinema image database (*.cdb)

• Click on the checkbox to establish these choices
• Click on the ellipsis menu to bring up the Save Screenshot Options menu
• Use Camera Model dropdown menu to select Phi-Theta

Update the path under Root Directory to point to the expected output directory:

/<path-to-repo>/cinema_tutorial_2019-11_SC/materials/data/nyx.cdb

Select File -> Export Now to export the Cinema Database.

You can watch the Time counter at the top. There are 5 timesteps (0 to 4). When the timestep counter gets to four and the frame resets, the export will be finished.

View the nyx.cdb in the CinemaCompare viewer

Open CinemaCompare in Firefox:

$ firefox materials/cinema_compare.html

If you do not want to run the workflow, you can still look at an example database:

$ firefox materials/example_compare.html

Use the sliders to explore the Nyx Cinema Database.

Acknowledgement

This tutorial uses a dataset from the open source Nyx cosmology simulation:

A. S. Almgren, J. B. Bell, M.J. Lijewski, Z. Lukic, E. Van Andel, “Nyx: A Massively Parallel AMR Code for Computational Cosmology” Astrophysical Journal, 765, 39, 2013. https://amrex-astro.github.io/Nyx/index.html