3D Visualization: VisIt¶
WarpX results can be visualized by VisIt, an open source visualization and analysis software. VisIt can be downloaded and installed from https://wci.llnl.gov/simulation/computer-codes/visit.
WarpX’ openPMD files can be visualized with VisIt 3.1.0+.
VisIt supports openPMD HDF5 files and requires to rename the files from
.opmd to be automatically detected.
Assuming that you ran a 2D simulation, here are instructions for making a simple plot from a given plotfile:
Open the header file: Run VisIt, then select “File” -> “Open file …”, then select the Header file associated with the plotfile of interest (e.g.,
View the data: Select “Add” -> “Pseudocolor” -> “Ez” and select “Draw”. You can select other variable to draw, such as
View the grid structure: Select “Subset” -> “levels”. Then double click the text “Subset-levels”, enable the “Wireframe” option, select “Apply”, select “Dismiss”, and then select “Draw”.
Save the image: Select “File” -> “Set save options”, then customize the image format to your liking, then click “Save”.
Your image should look similar to the one below
In 3D, you must apply the “Operators” -> “Slicing” -> “ThreeSlice”, You can left-click and drag over the image to rotate the image to generate image you like.
To make a movie, you must first create a text file named
movie.visit with a
list of the Header files for the individual frames.
The next step is to run VisIt, select “File” -> “Open file
…”, then select
movie.visit. Create an image to your liking and press the
“play” button on the VCR-like control panel to preview all the frames. To save
the movie, choose “File” -> “Save movie …”, and follow the instructions on the screen.