Snapshots using command line

For the examples here, simply copy and paste the command line in your shell, working in the directory where the StagYY par file is located. You can also use the examples on the data available in the Examples directory.

The next use of stagpy is to create images of snapshots of the different fields.

shell

stagpy field -o T

will plot the last snapshot of the temperature field.

shell

stagpy field -s : -o T-v3

will plot all the snapshots of the temperature and the vertical/radial velocity on separate figures.

shell

stagpy field -s 3:8:2 -o T,stream

will plot the temperature field with isocontours of the stream function from the third to the eighth snapshot, every two snapshots.

shell

stagpy field -o T -s 1,5 --vmin=0.8 --vmax=1.0

will plot the temperature field from the first and the fifth snapshot while keeping the range of the colorbar fixed between 0.8 and 1.

List of variables to plot

The list of fields specified with the -o (or --plot) option follows the same rules as for the rprof and time subcommands. Namely, ,-separated variables are on the same subplots; .-separated variables are on the same figure but different subplots; --separated variables are on different figures.

Note that only two fields can be on the same subplot, the first field is a color map and the second field can be either:

• a scalar field, isocontours are added to the plot;
• a vector field (e.g. v for the (v1, v2, v3) vector), arrows are added to the plot.

For example, -o=T,v3 asks for a temperature map with isocontour of the vertical velocity, while -o=T,v asks for a temperature map with velocity vectors on top of it.

If you ask for more than two fields on the same subplot, extra fields are ignored. -o=T,stream,v is therefore equivalent to -o=T,stream.