# Analysis routines¶

In addition to the main pyro program, there are many analysis tools that we describe here. Note: some problems write a report at the end of the simulation specifying the analysis routines that can be used with their data.

`compare.py`

: this takes two simulation output files as input and compares zone-by-zone for exact agreement. This is used as part of the regression testing.usage:

`./compare.py file1 file2`

`plot.py`

: this takes an output file as input and plots the data using the solver’s dovis method. It deduces the solver from the attributes stored in the HDF5 file.usage:

`./plot.py file`

`analysis/`

`convergence.py`

: this compares two files with different resolutions (one a factor of 2 finer than the other). It coarsens the finer data and then computes the norm of the difference. This is used to test the convergence of solvers.`gauss_diffusion_compare.py`

: this is for the diffusion solver’s Gaussian diffusion problem. It takes a sequence of output files as arguments, computes the angle-average, and the plots the resulting points over the analytic solution for comparison with the exact result.usage:

`./gauss_diffusion_compare.py file*`

`incomp_converge_error.py`

: this is for the incompressible solver’s converge problem. This takes a single output file as input and compares the velocity field to the analytic solution, reporting the L2 norm of the error.usage:

`./incomp_converge_error.py file`

`plotvar.py`

: this takes a single output file and a variable name and plots the data for that variable.usage:

`./plotvar.py file variable`

`sedov_compare.py`

: this takes an output file from the compressible Sedov problem, computes the angle-average profile of the solution and plots it together with the analytic data (read in from`cylindrical-sedov.out`

).usage:

`./sedov_compare.py file`

`smooth_error.py`

: this takes an output file from the advection solver’s smooth problem and compares to the analytic solution, outputing the L2 norm of the error.usage:

`./smooth_error.py file`

`sod_compare.py`

: this takes an output file from the compressible Sod problem and plots a slice through the domain over the analytic solution (read in from`sod-exact.out`

).usage:

`./sod_compare.py file`