Dim generalization

[ghost]

Description

Checklist

• Docstrings for all functions
• Gallery example in ./doc/examples (new features only)
• Benchmark in ./benchmarks, if your changes aren't covered by an
  existing benchmark
• Unit tests
• Clean style in the spirit of PEP8

For reviewers

• Check that the PR title is short, concise, and will make sense 1 year
  later.
• Check that new functions are imported in corresponding __init__.py.
• Check that new features, API changes, and deprecations are mentioned in
  doc/release/release_dev.rst.

[pep8speaks]

Hello @am-block! Thanks for opening this PR. We checked the lines you've touched for PEP 8 issues, and found:

• In the file plot_macro.py:

Line 4:10: E401 multiple imports on one line
Line 13:1: E302 expected 2 blank lines, found 1
Line 14:5: E265 block comment should start with '# '
Line 15:30: E262 inline comment should start with '# '
Line 18:17: E265 block comment should start with '# '
Line 19:41: E226 missing whitespace around arithmetic operator
Line 19:55: E226 missing whitespace around arithmetic operator
Line 20:46: E226 missing whitespace around arithmetic operator
Line 20:60: E226 missing whitespace around arithmetic operator
Line 21:60: W291 trailing whitespace
Line 22:41: E226 missing whitespace around arithmetic operator
Line 22:47: E226 missing whitespace around arithmetic operator
Line 22:54: E226 missing whitespace around arithmetic operator
Line 22:60: E226 missing whitespace around arithmetic operator
Line 22:70: E226 missing whitespace around arithmetic operator
Line 22:73: E226 missing whitespace around arithmetic operator
Line 22:80: E501 line too long (88 > 79 characters)
Line 22:83: E226 missing whitespace around arithmetic operator
Line 22:87: E226 missing whitespace around arithmetic operator
Line 25:1: E302 expected 2 blank lines, found 1
Line 26:5: E265 block comment should start with '# '
Line 26:80: E501 line too long (85 > 79 characters)
Line 27:5: E265 block comment should start with '# '
Line 29:39: E231 missing whitespace after ','
Line 29:46: E231 missing whitespace after ','
Line 30:5: E265 block comment should start with '# '
Line 31:5: E265 block comment should start with '# '
Line 35:1: E302 expected 2 blank lines, found 1
Line 42:1: E302 expected 2 blank lines, found 1
Line 43:5: E265 block comment should start with '# '
Line 45:5: E265 block comment should start with '# '
Line 49:4: E114 indentation is not a multiple of four (comment)
Line 49:80: E501 line too long (96 > 79 characters)
Line 50:5: E265 block comment should start with '# '
Line 58:1: E302 expected 2 blank lines, found 1
Line 59:5: E265 block comment should start with '# '
Line 61:80: E501 line too long (85 > 79 characters)
Line 61:86: W291 trailing whitespace
Line 62:9: E128 continuation line under-indented for visual indent
Line 64:77: W291 trailing whitespace
Line 65:9: E128 continuation line under-indented for visual indent
Line 67:80: E501 line too long (85 > 79 characters)
Line 67:86: W291 trailing whitespace
Line 68:9: E128 continuation line under-indented for visual indent
Line 71:33: E225 missing whitespace around operator
Line 71:45: E226 missing whitespace around arithmetic operator
Line 71:58: E226 missing whitespace around arithmetic operator
Line 72:1: W293 blank line contains whitespace
Line 73:1: W293 blank line contains whitespace
Line 74:5: E303 too many blank lines (2)
Line 76:1: E302 expected 2 blank lines, found 1
Line 77:5: E265 block comment should start with '# '
Line 79:44: E261 at least two spaces before inline comment
Line 79:45: E262 inline comment should start with '# '
Line 84:13: E722 do not use bare 'except'
Line 88:27: E231 missing whitespace after ','
Line 92:28: E261 at least two spaces before inline comment
Line 92:29: E262 inline comment should start with '# '
Line 97:1: E302 expected 2 blank lines, found 1
Line 98:24: E231 missing whitespace after ','
Line 99:32: E231 missing whitespace after ','
Line 100:32: E231 missing whitespace after ','
Line 101:17: E231 missing whitespace after ','
Line 103:1: E302 expected 2 blank lines, found 1
Line 104:5: E265 block comment should start with '# '
Line 106:5: E265 block comment should start with '# '
Line 109:14: E231 missing whitespace after ','
Line 109:18: E231 missing whitespace after ','
Line 109:62: E261 at least two spaces before inline comment
Line 109:62: E262 inline comment should start with '# '
Line 113:22: E231 missing whitespace after ','
Line 113:33: E231 missing whitespace after ','
Line 115:35: E231 missing whitespace after ','
Line 120:26: E261 at least two spaces before inline comment
Line 120:27: E262 inline comment should start with '# '
Line 121:9: E265 block comment should start with '# '
Line 121:80: E501 line too long (104 > 79 characters)
Line 127:1: E305 expected 2 blank lines after class or function definition, found 1
Line 128:5: E265 block comment should start with '# '
Line 130:5: E265 block comment should start with '# '
Line 131:5: E265 block comment should start with '# '
Line 132:50: E261 at least two spaces before inline comment
Line 132:51: E262 inline comment should start with '# '
Line 133:5: E265 block comment should start with '# '
Line 134:5: E265 block comment should start with '# '
Line 135:10: E231 missing whitespace after ','
Line 138:44: E231 missing whitespace after ','
Line 138:49: E231 missing whitespace after ','
Line 139:26: E231 missing whitespace after ','
Line 139:39: E231 missing whitespace after ','
Line 139:52: E231 missing whitespace after ','
Line 139:58: E231 missing whitespace after ','

• In the file skimage/segmentation/slic_superpixels.py:

Line 249:10: W291 trailing whitespace
Line 251:26: E231 missing whitespace after ','