Unable to plot output generated by default input files

[mcflugen]

• sequence version: 0.4.1.dev0
• Python version: 3.10
• Operating System: osx

Description

I'm unable to plot Sequence output that was generated by the default set of input files. When trying to plot the output I get the following error,

Traceback (most recent call last):
...
KeyError: 'at_node:bedrock_surface__elevation'

What I Did

The following commands reproduce the problem,

$ mkdir example
$ cd example
$ sequence setup
$ sequence run
$ sequence plot

I think there are two issues here:

1. The default set of input files should definitely generate output that the sequence command can plot
2. The sequence plot command should report a better error message if it finds an output file is missing a variable that it requires

[mcflugen]

Fixed with #41.