Add visualize doc and ignore ipynb for pre-commit

.pre-commit-config.yaml

@@ -43,4 +43,4 @@ repos:
     rev: v2.1.0
     hooks:
       - id: codespell
-        args: ["-w", "docs/source", "echopype"]
+        args: ["--skip=*.ipynb", "-w", "docs/source", "echopype"]

docs/source/_toc.yml

@@ -14,6 +14,7 @@ parts:
   - file: open-converted
   - file: process
   - file: data-format
+  - file: viz
 - caption: Help & reference
   chapters:
   - file: api

docs/source/api.rst

@@ -17,6 +17,7 @@ API components that most users will interact with.
 * `Combine EchoData objects`_
 * `Data processing subpackages`_
 * `Utilities`_
+* `Visualization subpackage`_
 
 
 EchoData class
@@ -76,3 +77,9 @@ Utilities
    :no-inheritance-diagram:
    :no-heading:
    :members: calc_absorption, calc_sound_speed
+
+Visualization subpackage
+------------------------
+
+.. automodule:: echopype.visualize
+   :members: create_echogram

echopype/visualize/__init__.py

@@ -1,3 +1,8 @@
+"""
+Visualization module to quickly plot raw, Sv, and MVBS dataset.
+
+**NOTE: To use this subpackage. `Matplotlib` and `cmocean` package must be installed.**
+"""
 from .api import create_echogram
 from . import cm