plot畫圖時可以設定線條參數。包括：顏色、線型、標記風格。

1)控制顏色

顏色之間的對應關系為

b---blue ? c---cyan ?g---green ? ?k----black

m---magenta r---red ?w---white ? ?y----yellow

有三種表示顏色的方式:

a:用全名 ?b:16進制如：#FF00FF ?c：RGB或RGBA元組(1,0,1,1) d：灰度強度如：‘0.7’

2)控制線型

符號和線型之間的對應關系

- ? ? ?實線

-- ? ? 短線

-. ? ? 短點相間線

： ? ? 虛點線

>>>import matplotlib >>>from pylab import * >>>help(plot) Help on function plot in module matplotlib.pyplot: plot(*args, **kwargs) ? ? Plot lines and/or markers to the ? ? :class:`~matplotlib.axes.Axes`. ?*args* is a variable length ? ? argument, allowing for multiple *x*, *y* pairs with an ? ? optional format string. ?For example, each of the following is ? ? legal:: ? ?? ? ? ? ? plot(x, y) ? ? ? ? # plot x and y using default line style and color ? ? ? ? plot(x, y, 'bo') ? # plot x and y using blue circle markers ? ? ? ? plot(y) ? ? ? ? ? ?# plot y using x as index array 0..N-1 ? ? ? ? plot(y, 'r+') ? ? ?# ditto, but with red plusses ? ?? ? ? If *x* and/or *y* is 2-dimensional, then the corresponding columns ? ? will be plotted. ? ?? ? ? An arbitrary number of *x*, *y*, *fmt* groups can be ? ? specified, as in:: ? ?? ? ? ? ? a.plot(x1, y1, 'g^', x2, y2, 'g-') ? ?? ? ? Return value is a list of lines that were added. ? ?? ? ? The following format string characters are accepted to control ? ? the line style or marker: ? ?? ? ? ================ ? ?=============================== ? ? character ? ? ? ? ? description ? ? ================ ? ?=============================== ? ? ``'-'`` ? ? ? ? ? ? solid line style ? ? ``'--'`` ? ? ? ? ? ?dashed line style ? ? ``'-.'`` ? ? ? ? ? ?dash-dot line style ? ? ``':'`` ? ? ? ? ? ? dotted line style ? ? ``'.'`` ? ? ? ? ? ? point marker ? ? ``','`` ? ? ? ? ? ? pixel marker ? ? ``'o'`` ? ? ? ? ? ? circle marker ? ? ``'v'`` ? ? ? ? ? ? triangle_down marker ? ? ``'^'`` ? ? ? ? ? ? triangle_up marker ? ? ``''`` ? ? ? ? ? ? triangle_right marker ? ? ``'1'`` ? ? ? ? ? ? tri_down marker ? ? ``'2'`` ? ? ? ? ? ? tri_up marker ? ? ``'3'`` ? ? ? ? ? ? tri_left marker ? ? ``'4'`` ? ? ? ? ? ? tri_right marker ? ? ``'s'`` ? ? ? ? ? ? square marker ? ? ``'p'`` ? ? ? ? ? ? pentagon marker ? ? ``'*'`` ? ? ? ? ? ? star marker ? ? ``'h'`` ? ? ? ? ? ? hexagon1 marker ? ? ``'H'`` ? ? ? ? ? ? hexagon2 marker ? ? ``'+'`` ? ? ? ? ? ? plus marker ? ? ``'x'`` ? ? ? ? ? ? x marker ? ? ``'D'`` ? ? ? ? ? ? diamond marker ? ? ``'d'`` ? ? ? ? ? ? thin_diamond marker ? ? ``'|'`` ? ? ? ? ? ? vline marker ? ? ``'_'`` ? ? ? ? ? ? hline marker ? ? ================ ? ?=============================== ? ?? ? ? The following color abbreviations are supported: ? ?? ? ? ========== ?======== ? ? character ? color ? ? ========== ?======== ? ? 'b' ? ? ? ? blue ? ? 'g' ? ? ? ? green ? ? 'r' ? ? ? ? red ? ? 'c' ? ? ? ? cyan ? ? 'm' ? ? ? ? magenta ? ? 'y' ? ? ? ? yellow ? ? 'k' ? ? ? ? black ? ? 'w' ? ? ? ? white ? ? ========== ?======== ? ?? ? ? In addition, you can specify colors in many weird and ? ? wonderful ways, including full names (``'green'``), hex ? ? strings (``'#008000'``), RGB or RGBA tuples (``(0,1,0,1)``) or ? ? grayscale intensities as a string (``'0.8'``). ?Of these, the ? ? string specifications can be used in place of a ``fmt`` group, ? ? but the tuple forms can be used only as ``kwargs``. ? ?? ? ? Line styles and colors are combined in a single format string, as in ? ? ``'bo'`` for blue circles. ? ?? ? ? The *kwargs* can be used to set line properties (any property that has ? ? a ``set_*`` method). ?You can use this to set a line label (for auto ? ? legends), linewidth, anitialising, marker face color, etc. ?Here is an ? ? example:: ? ?? ? ? ? ? plot([1,2,3], [1,2,3], 'go-', label='line 1', linewidth=2) ? ? ? ? plot([1,2,3], [1,4,9], 'rs', ?label='line 2') ? ? ? ? axis([0, 4, 0, 10]) ? ? ? ? legend() ? ?? ? ? If you make multiple lines with one plot command, the kwargs ? ? apply to all those lines, e.g.:: ? ?? ? ? ? ? plot(x1, y1, x2, y2, antialised=False) ? ?? ? ? Neither line will be antialiased. ? ?? ? ? You do not need to use format strings, which are just ? ? abbreviations. ?All of the line properties can be controlled ? ? by keyword arguments. ?For example, you can set the color, ? ? marker, linestyle, and markercolor with:: ? ?? ? ? ? ? plot(x, y, color='green', linestyle='dashed', marker='o', ? ? ? ? ? ? ?markerfacecolor='blue', markersize=12). ?See ? ? ? ? ? ? ?:class:`~matplotlib.lines.Line2D` for details. ? ?? ? ? The kwargs are :class:`~matplotlib.lines.Line2D` properties: ? ?? ? ? ? agg_filter: unknown ? ? ? alpha: float (0.0 transparent through 1.0 opaque) ? ? ? ?? ? ? ? animated: [True | False] ? ? ? ?? ? ? ? antialiased or aa: [True | False] ? ? ? ?? ? ? ? axes: an :class:`~matplotlib.axes.Axes` instance ? ? ? ?? ? ? ? clip_box: a :class:`matplotlib.transforms.Bbox` instance ? ? ? ?? ? ? ? clip_on: [True | False] ? ? ? ?? ? ? ? clip_path: [ (:class:`~matplotlib.path.Path`, ? ? ? ? :class:`~matplotlib.transforms.Transform`) | ? ? ? ? :class:`~matplotlib.patches.Patch` | None ] ? ? ? ?? ? ? ? color or c: any matplotlib color ? ? ? ?? ? ? ? contains: a callable function ? ? ? ?? ? ? ? dash_capstyle: ['butt' | 'round' | 'projecting'] ? ? ? ?? ? ? ? dash_joinstyle: ['miter' | 'round' | 'bevel'] ? ? ? ?? ? ? ? dashes: sequence of on/off ink in points ? ? ? ?? ? ? ? data: 2D array (rows are x, y) or two 1D arrays ? ? ? ?? ? ? ? drawstyle: [ 'default' | 'steps' | 'steps-pre' | 'steps-mid' | 'steps-post' ] ? ? ? ?? ? ? ? figure: a :class:`matplotlib.figure.Figure` instance ? ? ? ?? ? ? ? fillstyle: ['full' | 'left' | 'right' | 'bottom' | 'top'] ? ? ? ?? ? ? ? gid: an id string ? ? ? ?? ? ? ? label: any string ? ? ? ?? ? ? ? linestyle or ls: [ ``'-'`` | ``'--'`` | ``'-.'`` | ``':'`` | ``'None'`` | ``' '`` | ``''`` ] ? ? ? ? and any drawstyle in combination with a linestyle, e.g. ``'steps--'``. ? ? ? ?? ? ? ? linewidth or lw: float value in points ? ? ? ?? ? ? ? lod: [True | False] ? ? ? ?? ? ? ? marker: [ ``7`` | ``4`` | ``5`` | ``6`` | ``'o'`` | ``'D'`` | ``'h'`` | ``'H'`` | ``'_'`` | ``''`` | ``None`` | ``'None'`` | ``' '`` | ``'8'`` | ``'p'`` | ``','`` | ``'+'`` | ``'.'`` | ``'s'`` | ``'*'`` | ``'d'`` | ``3`` | ``0`` | ``1`` | ``2`` | ``'1'`` | ``'3'`` | ``'4'`` | ``'2'`` | ``'v'`` | ``''`` | ``'^'`` | ``'|'`` | ``'x'`` | ``'$...$'`` | *tuple* | *Nx2 array* ] ? ? ? markeredgecolor or mec: any matplotlib color ? ? ? ?? ? ? ? markeredgewidth or mew: float value in points ? ? ? ?? ? ? ? markerfacecolor or mfc: any matplotlib color ? ? ? ?? ? ? ? markerfacecoloralt or mfcalt: any matplotlib color ? ? ? ?? ? ? ? markersize or ms: float ? ? ? ?? ? ? ? markevery: None | integer | (startind, stride) ? ? ? picker: float distance in points or callable pick function ? ? ? ? ``fn(artist, event)`` ? ? ? ?? ? ? ? pickradius: float distance in points ? ? ? ?? ? ? ? rasterized: [True | False | None] ? ? ? ?? ? ? ? snap: unknown ? ? ? solid_capstyle: ['butt' | 'round' | ?'projecting'] ? ? ? ?? ? ? ? solid_joinstyle: ['miter' | 'round' | 'bevel'] ? ? ? ?? ? ? ? transform: a :class:`matplotlib.transforms.Transform` instance ? ? ? ?? ? ? ? url: a url string ? ? ? ?? ? ? ? visible: [True | False] ? ? ? ?? ? ? ? xdata: 1D array ? ? ? ?? ? ? ? ydata: 1D array ? ? ? ?? ? ? ? zorder: any number ? ? ? ?? ? ?? ? ? kwargs *scalex* and *scaley*, if defined, are passed on to ? ? :meth:`~matplotlib.axes.Axes.autoscale_view` to determine ? ? whether the *x* and *y* axes are autoscaled; the default is ? ? *True*. ? ?? ? ? Additional kwargs: hold = [True|False] overrides default hold state

總結

以上是生活随笔為你收集整理的python中线条颜色_python中plot用法——线条、点、颜色的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。