Add new hake region to NASC notebook

[leewujung]

• expand to process data from 1-2 transects
• load EVR files to get regions
• create hake only MVBS after masking
• compute NASC
• map plot
  • plot lat/lon of both transects
  • plot NASC as color dots
• echogram plot
  • 3 frequency echogram with region contour

[ctuguinay]

Maybe edit this title to "Add New Hake Survey Notebook Focused on Masking Hake and Hake NASC"

[ctuguinay]

I'll also need to put Hake EVR files in Echoregions so that I can easily read them from a notebook.

And I'll need to modify how the EK500 colormap is placed into Matplotlib's colormap, since the visualize subpackage is meant to be removed. Hopefully not a big thing to fix.

[leewujung]

And I'll need to modify how the EK500 colormap is placed into Matplotlib's colormap, since the visualize subpackage is meant to be removed. Hopefully not a big thing to fix.

I did the investigation when putting in the deprecation, so I just submit https://github.com/OSOceanAcoustics/echopype/pull/1336 and asked you to review. Right now if you do import echopype.colormap, then you can use cmap="ep.ek500" when plotting.

[leewujung]

I'll also need to put Hake EVR files in Echoregions so that I can easily read them from a notebook.

Oh right. Maybe put 1 EVR file in this repo instead of the Echoregions one, so that it is together with the notebook. In Echoregions I feel a minimal example like what you have is nice. I guess this is the place where we could actually put it in the release assets, so that it gets bundled with the next release of echopype-examples. I haven't looked into the operations though, seems something we can do a hackday with, to also get the initial stuff going to migrate Echopype test files.

[ctuguinay]

Sounds good, I'll place it in this repo. I think another PR to place stuff in release assets would be good though, after this one is merged.