Plot Method Added to Western USA Live Fuel Moisture Dataset

[amrirasyidi]

• Relevant issue: Ensure all datasets have a plot method #2377
• Added plot method to Western USA Live Fuel Moisture dataset.
• Added test case for the plot method

This is how the plot looks like

Default plot

from torchgeo.datasets import WesternUSALiveFuelMoisture
data = WesternUSALiveFuelMoisture('path/to/data')
sample = data[0]
f = data.plot(
    sample,
    show_titles=True, suptitle='test suptitle'
)

Single variable defined

f = data.plot(
    sample,
    variables_to_plot=['slope'],
    show_titles=True, suptitle='test suptitle'
)

Multiple variables defined

f = data.plot(
    sample,
    variables_to_plot=[
        'slope',
        'green',
        'swir'
    ],
    show_titles=True, suptitle='test suptitle'
)

[adamjstewart]

My vote would be to always plot all variables instead of asking which variables to plot.

[adamjstewart]

Hmm, maybe there are too many variables to always plot all of them. Unless we can somehow group plots together. What's the difference between red, vv_red, and vh_red? Maybe we can only plot RGB instead of all possible color combinations? This one might require some creativity to actually be a useful plot.

[adamjstewart]

I don't think this plot is perfect, but I do think it's better than no plot. Let's merge and refine in future PRs if anyone cares.