plot_data.py improvements

[falkamelung]

After AGU:

• • write command into log file
• option to make colorbar smaller and to move
• should work without giving --lalo (we may need a template=determine_template_from_options() function
  The first thing to look at data is a simple command without figuring out good points to look at, e.g. plot_data.py hvGalapagosSenA106/mintpy hvGalapagosSenD128/mintpy --ref-lalo -0.81 -91.190
• Make it work without giving --ref-lalo. If not given it would use the reference point of the reference data set and increase window size until it finds a matching pixel
• I don't understand why to give --window-size. It could just increase the window size until a pixel that exists in both datasets is found?
• it should write into CWD instead of $SCRATCHDIR. When I call it in SCRATCHDIR/test, it should write e.g. into SCRATCHDIR/test/hvGalapagos
• use S1_vert*, S1_horz* files produced by horzvert_timeseries.py
• Why seismicity (default: None)? I would expect that if you say --seismicity it will plot all quakes larger than a default threshold (e.g. M3). If you say --seismicity 2.5 it would plot everything larger than 2.5
• add options to plot on Openstreetmap hillshade and satellite (we want to be able to reproduce plot form insarmaps)
• use run_or_skip from MintPy or similar
• --plot_slice option to use MintPy's plot_slice for plotting (can we capture all view.py options by importing the MintPy argparse functions?)
• --save, --dpi options and defaults should be exactly as for view.py