Convert linestyle to dash pattern.
(style)
| 31 | |
| 32 | |
| 33 | def _get_dash_pattern(style): |
| 34 | """Convert linestyle to dash pattern.""" |
| 35 | # go from short hand -> full strings |
| 36 | if isinstance(style, str): |
| 37 | style = ls_mapper.get(style, style) |
| 38 | # un-dashed styles |
| 39 | if style in ['solid', 'None', 'none', '', ' ']: |
| 40 | offset = 0 |
| 41 | dashes = None |
| 42 | # dashed styles |
| 43 | elif style in ['dashed', 'dashdot', 'dotted']: |
| 44 | offset = 0 |
| 45 | dashes = tuple(mpl.rcParams[f'lines.{style}_pattern']) |
| 46 | # |
| 47 | elif isinstance(style, tuple): |
| 48 | offset, dashes = style |
| 49 | if offset is None: |
| 50 | raise ValueError(f'Unrecognized linestyle: {style!r}') |
| 51 | else: |
| 52 | raise ValueError(f'Unrecognized linestyle: {style!r}') |
| 53 | |
| 54 | # normalize offset to be positive and shorter than the dash cycle |
| 55 | if dashes is not None: |
| 56 | dsum = sum(dashes) |
| 57 | if dsum: |
| 58 | offset %= dsum |
| 59 | |
| 60 | return offset, dashes |
| 61 | |
| 62 | |
| 63 | def _get_dash_patterns(styles): |
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