Python matplotlib.rcParams方法代码示例

# 需要导入模块: import matplotlib [as 别名]
# 或者: from matplotlib import rcParams [as 别名]
def vPlotEquityCurves(oBt, mOhlc, oChefModule,
                      sPeriod='W',
                      close_label='C',):
    import matplotlib
    import matplotlib.pylab as pylab
    # FixMe:
    matplotlib.rcParams['figure.figsize'] = (10, 5)

    # FixMe: derive the period from the sTimeFrame
    oChefModule.vPlotEquity(oBt.equity, mOhlc, sTitle="%s\nEquity" % repr(oBt),
                            sPeriod=sPeriod,
                            close_label=close_label,
                            )
    pylab.show()

    oBt.vPlotTrades()
    pylab.legend(loc='lower left')
    pylab.show()

    ## oBt.vPlotTrades(subset=slice(sYear+'-05-01', sYear+'-09-01'))
    ## pylab.legend(loc='lower left')
    ## pylab.show() 

# 需要导入模块: import matplotlib [as 别名]
# 或者: from matplotlib import rcParams [as 别名]
def hardcopy_fonts():
    path = os.path.abspath(__file__)
    pkg_dir = "/" + "/".join(path.split("/")[:-1])
    os.system(
        "cp -r {}/fonts/firasans/* ".format(pkg_dir)
        + os.path.join(mpl.rcParams["datapath"] + "/fonts/ttf/")
    )
    os.system(
        "cp -r {}/fonts/firamath/* ".format(pkg_dir)
        + os.path.join(mpl.rcParams["datapath"] + "/fonts/ttf/")
    )
    os.system(
        "cp -r {}/fonts/texgyreheros/* ".format(pkg_dir)
        + os.path.join(mpl.rcParams["datapath"] + "/fonts/ttf/")
    )
    os.system("rm " + os.path.join(mpl.get_cachedir() + "/font*")) 

# 需要导入模块: import matplotlib [as 别名]
# 或者: from matplotlib import rcParams [as 别名]
def _anim_rst(anim, image_path, gallery_conf):
    from matplotlib.animation import ImageMagickWriter
    # output the thumbnail as the image, as it will just be copied
    # if it's the file thumbnail
    fig = anim._fig
    image_path = image_path.replace('.png', '.gif')
    fig_size = fig.get_size_inches()
    thumb_size = gallery_conf['thumbnail_size']
    use_dpi = round(
        min(t_s / f_s for t_s, f_s in zip(thumb_size, fig_size)))
    # FFmpeg is buggy for GIFs
    if ImageMagickWriter.isAvailable():
        writer = 'imagemagick'
    else:
        writer = None
    anim.save(image_path, writer=writer, dpi=use_dpi)
    html = anim._repr_html_()
    if html is None:  # plt.rcParams['animation.html'] == 'none'
        html = anim.to_jshtml()
    html = indent(html, '         ')
    return _ANIMATION_RST.format(html) 

# 需要导入模块: import matplotlib [as 别名]
# 或者: from matplotlib import rcParams [as 别名]
def _get_label(self):
        # x in axes coords, y in display coords (to be updated at draw
        # time by _update_label_positions)
        label = mtext.Text(x=0.5, y=0,
            fontproperties=font_manager.FontProperties(
                               size=rcParams['axes.labelsize'],
                               weight=rcParams['axes.labelweight']),
            color=rcParams['axes.labelcolor'],
            verticalalignment='top',
            horizontalalignment='center',
            )

        label.set_transform(mtransforms.blended_transform_factory(
            self.axes.transAxes, mtransforms.IdentityTransform()))

        self._set_artist_props(label)
        self.label_position = 'bottom'
        return label 

# 需要导入模块: import matplotlib [as 别名]
# 或者: from matplotlib import rcParams [as 别名]
def get_subplot_params(self, fig=None):
        """
        return a dictionary of subplot layout parameters. The default
        parameters are from rcParams unless a figure attribute is set.
        """
        from matplotlib.figure import SubplotParams
        import copy
        if fig is None:
            kw = dict([(k, rcParams["figure.subplot."+k]) \
                       for k in self._AllowedKeys])
            subplotpars = SubplotParams(**kw)
        else:
            subplotpars = copy.copy(fig.subplotpars)

        update_kw = dict([(k, getattr(self, k)) for k in self._AllowedKeys])
        subplotpars.update(**update_kw)

        return subplotpars 

# 需要导入模块: import matplotlib [as 别名]
# 或者: from matplotlib import rcParams [as 别名]
def __init__(self, nrows, ncols,
                 subplot_spec,
                 wspace=None, hspace=None,
                 height_ratios=None, width_ratios=None):
        """
        The number of rows and number of columns of the grid need to
        be set. An instance of SubplotSpec is also needed to be set
        from which the layout parameters will be inherited. The wspace
        and hspace of the layout can be optionally specified or the
        default values (from the figure or rcParams) will be used.
        """
        self._wspace=wspace
        self._hspace=hspace

        self._subplot_spec = subplot_spec

        GridSpecBase.__init__(self, nrows, ncols,
                              width_ratios=width_ratios,
                              height_ratios=height_ratios) 

# 需要导入模块: import matplotlib [as 别名]
# 或者: from matplotlib import rcParams [as 别名]
def set_weight(self, weight):
        """
        Set the font weight.  May be either a numeric value in the
        range 0-1000 or one of 'ultralight', 'light', 'normal',
        'regular', 'book', 'medium', 'roman', 'semibold', 'demibold',
        'demi', 'bold', 'heavy', 'extra bold', 'black'
        """
        if weight is None:
            weight = rcParams['font.weight']
        try:
            weight = int(weight)
            if weight < 0 or weight > 1000:
                raise ValueError()
        except ValueError:
            if weight not in weight_dict:
                raise ValueError("weight is invalid")
        self._weight = weight 

# 需要导入模块: import matplotlib [as 别名]
# 或者: from matplotlib import rcParams [as 别名]
def set_stretch(self, stretch):
        """
        Set the font stretch or width.  Options are: 'ultra-condensed',
        'extra-condensed', 'condensed', 'semi-condensed', 'normal',
        'semi-expanded', 'expanded', 'extra-expanded' or
        'ultra-expanded', or a numeric value in the range 0-1000.
        """
        if stretch is None:
            stretch = rcParams['font.stretch']
        try:
            stretch = int(stretch)
            if stretch < 0 or stretch > 1000:
                raise ValueError()
        except ValueError:
            if stretch not in stretch_dict:
                raise ValueError("stretch is invalid")
        self._stretch = stretch 

# 需要导入模块: import matplotlib [as 别名]
# 或者: from matplotlib import rcParams [as 别名]
def __init__(self, useOffset=True, useMathText=None, useLocale=None):
        # useOffset allows plotting small data ranges with large offsets: for
        # example: [1+1e-9,1+2e-9,1+3e-9] useMathText will render the offset
        # and scientific notation in mathtext

        self.set_useOffset(useOffset)
        self._usetex = rcParams['text.usetex']
        if useMathText is None:
            useMathText = rcParams['axes.formatter.use_mathtext']
        self._useMathText = useMathText
        self.orderOfMagnitude = 0
        self.format = ''
        self._scientific = True
        self._powerlimits = rcParams['axes.formatter.limits']
        if useLocale is None:
            useLocale = rcParams['axes.formatter.use_locale']
        self._useLocale = useLocale 

# 需要导入模块: import matplotlib [as 别名]
# 或者: from matplotlib import rcParams [as 别名]
def latex2png(latex, filename, fontset='cm'):
    latex = "$%s$" % latex
    orig_fontset = rcParams['mathtext.fontset']
    rcParams['mathtext.fontset'] = fontset
    if os.path.exists(filename):
        depth = mathtext_parser.get_depth(latex, dpi=100)
    else:
        try:
            depth = mathtext_parser.to_png(filename, latex, dpi=100)
        except:
            warnings.warn("Could not render math expression %s" % latex,
                          Warning)
            depth = 0
    rcParams['mathtext.fontset'] = orig_fontset
    sys.stdout.write("#")
    sys.stdout.flush()
    return depth

# LaTeX to HTML translation stuff: 

# 需要导入模块: import matplotlib [as 别名]
# 或者: from matplotlib import rcParams [as 别名]
def cla(self):
        Axes.cla(self)

        self.set_longitude_grid(30)
        self.set_latitude_grid(15)
        self.set_longitude_grid_ends(75)
        self.xaxis.set_minor_locator(NullLocator())
        self.yaxis.set_minor_locator(NullLocator())
        self.xaxis.set_ticks_position('none')
        self.yaxis.set_ticks_position('none')
        self.yaxis.set_tick_params(label1On=True)
        # Why do we need to turn on yaxis tick labels, but
        # xaxis tick labels are already on?

        self.grid(rcParams['axes.grid'])

        Axes.set_xlim(self, -np.pi, np.pi)
        Axes.set_ylim(self, -np.pi / 2.0, np.pi / 2.0) 

# 需要导入模块: import matplotlib [as 别名]
# 或者: from matplotlib import rcParams [as 别名]
def cla(self):
        Axes.cla(self)

        self.title.set_y(1.05)

        self.xaxis.set_major_formatter(self.ThetaFormatter())
        self.xaxis.isDefault_majfmt = True
        angles = np.arange(0.0, 360.0, 45.0)
        self.set_thetagrids(angles)
        self.yaxis.set_major_locator(self.RadialLocator(self.yaxis.get_major_locator()))

        self.grid(rcParams['polaraxes.grid'])
        self.xaxis.set_ticks_position('none')
        self.yaxis.set_ticks_position('none')
        self.yaxis.set_tick_params(label1On=True)
        # Why do we need to turn on yaxis tick labels, but
        # xaxis tick labels are already on?

        self.set_theta_offset(self._default_theta_offset)
        self.set_theta_direction(self._default_theta_direction) 

# 需要导入模块: import matplotlib [as 别名]
# 或者: from matplotlib import rcParams [as 别名]
def is_math_text(s):
        """
        Returns a cleaned string and a boolean flag.
        The flag indicates if the given string *s* contains any mathtext,
        determined by counting unescaped dollar signs. If no mathtext
        is present, the cleaned string has its dollar signs unescaped.
        If usetex is on, the flag always has the value "TeX".
        """
        # Did we find an even number of non-escaped dollar signs?
        # If so, treat is as math text.
        if rcParams['text.usetex']:
            if s == ' ':
                s = r'\ '
            return s, 'TeX'

        if cbook.is_math_text(s):
            return s, True
        else:
            return s.replace(r'\$', '$'), False 

# 需要导入模块: import matplotlib [as 别名]
# 或者: from matplotlib import rcParams [as 别名]
def get_font_config(self):
        """Reinitializes self if relevant rcParams on have changed."""
        if self._rc_cache is None:
            self._rc_cache = dict([(k, None) for k in self._rc_cache_keys])
        changed = [par for par in self._rc_cache_keys
                   if rcParams[par] != self._rc_cache[par]]
        if changed:
            if DEBUG:
                print('DEBUG following keys changed:', changed)
            for k in changed:
                if DEBUG:
                    print('DEBUG %-20s: %-10s -> %-10s' %
                          (k, self._rc_cache[k], rcParams[k]))
                # deepcopy may not be necessary, but feels more future-proof
                self._rc_cache[k] = copy.deepcopy(rcParams[k])
            if DEBUG:
                print('DEBUG RE-INIT\nold fontconfig:', self._fontconfig)
            self.__init__()
        if DEBUG:
            print('DEBUG fontconfig:', self._fontconfig)
        return self._fontconfig 

# 需要导入模块: import matplotlib [as 别名]
# 或者: from matplotlib import rcParams [as 别名]
def get_rgba(self, tex, fontsize=None, dpi=None, rgb=(0, 0, 0)):
        """
        Returns latex's rendering of the tex string as an rgba array
        """
        if not fontsize:
            fontsize = rcParams['font.size']
        if not dpi:
            dpi = rcParams['savefig.dpi']
        r, g, b = rgb
        key = tex, self.get_font_config(), fontsize, dpi, tuple(rgb)
        Z = self.rgba_arrayd.get(key)

        if Z is None:
            alpha = self.get_grey(tex, fontsize, dpi)

            Z = np.zeros((alpha.shape[0], alpha.shape[1], 4), np.float)

            Z[:, :, 0] = r
            Z[:, :, 1] = g
            Z[:, :, 2] = b
            Z[:, :, 3] = alpha
            self.rgba_arrayd[key] = Z

        return Z