Python matplotlib.colors.ColorConverter() Examples
The following are 11
code examples of matplotlib.colors.ColorConverter().
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matplotlib.colors
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Example #1
| Source File: textbox.py From visual_dynamics with MIT License | 5 votes |
|
def set_bgcolor(self, color, alpha=1.0):
self._ax.set_axis_bgcolor(ColorConverter().to_rgba(color, alpha))
self.draw()
Example #2
| Source File: textbox.py From visual_dynamics with MIT License | 5 votes |
|
def draw(self):
color, alpha = self._ax.get_axis_bgcolor(), self._ax.get_alpha()
self._ax.set_axis_bgcolor(mpl.rcParams['figure.facecolor'])
self._ax.draw_artist(self._ax.patch)
self._ax.set_axis_bgcolor(ColorConverter().to_rgba(color, alpha))
self._ax.draw_artist(self._ax.patch)
self._ax.draw_artist(self._text_box)
self._fig.canvas.draw()
self._fig.canvas.flush_events() # Fixes bug with Qt4Agg backend
Example #3
| Source File: config.py From threeML with BSD 3-Clause "New" or "Revised" License | 5 votes |
|
def is_matplotlib_color(color):
# color_converter = colors.ColorConverter()
try:
return colors.is_color_like(color)
except (ValueError):
return False
Example #4
| Source File: svg_to_axes.py From figurefirst with MIT License | 5 votes |
|
def mplkwargs(self):
mpl_map = {"stroke": "edgecolor", "stroke-width": "lw", "fill": "facecolor"}
mpl_kwargs = {}
keylist = list()
for k, v in self.style.items():
try:
mpl_kwargs[mpl_map[k]] = v
except KeyError:
pass
from matplotlib.colors import ColorConverter
converter = ColorConverter()
for k, v in mpl_kwargs.items():
if k == "lw":
tmp = v.split("px")[0]
tmp = (
self.layout.from_userx(tmp, "in") / 13.889e-3
) # hard coding pnt scaling
mpl_kwargs["lw"] = tmp
if k == "edgecolor":
mpl_kwargs["edgecolor"] = np.array(
converter.to_rgba(v, float(self.style["stroke-opacity"]))
)
if k == "facecolor":
mpl_kwargs["facecolor"] = np.array(
converter.to_rgba(v, float(self.style["fill-opacity"]))
)
return mpl_kwargs
Example #5
| Source File: matplotlib_venn.py From altanalyze with Apache License 2.0 | 5 votes |
|
def compute_venn2_colors(set_colors):
'''
Given two base colors, computes combinations of colors corresponding to all regions of the venn diagram.
returns a list of 3 elements, providing colors for regions (10, 01, 11).
>>> compute_venn2_colors(('r', 'g'))
(array([ 1., 0., 0.]), array([ 0. , 0.5, 0. ]), array([ 0.7 , 0.35, 0. ]))
'''
ccv = ColorConverter()
base_colors = [np.array(ccv.to_rgb(c)) for c in set_colors]
return (base_colors[0], base_colors[1], mix_colors(base_colors[0], base_colors[1]))
Example #6
| Source File: matplotlib_venn.py From altanalyze with Apache License 2.0 | 5 votes |
|
def compute_venn3_colors(set_colors):
'''
Given three base colors, computes combinations of colors corresponding to all regions of the venn diagram.
returns a list of 7 elements, providing colors for regions (100, 010, 110, 001, 101, 011, 111).
>>> compute_venn3_colors(['r', 'g', 'b'])
(array([ 1., 0., 0.]),..., array([ 0.4, 0.2, 0.4]))
'''
ccv = ColorConverter()
base_colors = [np.array(ccv.to_rgb(c)) for c in set_colors]
return (base_colors[0], base_colors[1], mix_colors(base_colors[0], base_colors[1]), base_colors[2],
mix_colors(base_colors[0], base_colors[2]), mix_colors(base_colors[1], base_colors[2]), mix_colors(base_colors[0], base_colors[1], base_colors[2]))
Example #7
| Source File: colors.py From tropycal with MIT License | 5 votes |
|
def make_colormap(colors,whiten=0):
z = np.array(sorted(colors.keys()))
n = len(z)
z1 = min(z)
zn = max(z)
x0 = (z - z1) / (zn - z1)
CC = mcolors.ColorConverter()
R = []
G = []
B = []
for i in range(n):
Ci = colors[z[i]]
if type(Ci) == str:
RGB = CC.to_rgb(Ci)
else:
RGB = Ci
R.append(RGB[0] + (1-RGB[0])*whiten)
G.append(RGB[1] + (1-RGB[1])*whiten)
B.append(RGB[2] + (1-RGB[2])*whiten)
cmap_dict = {}
cmap_dict['red'] = [(x0[i],R[i],R[i]) for i in range(len(R))]
cmap_dict['green'] = [(x0[i],G[i],G[i]) for i in range(len(G))]
cmap_dict['blue'] = [(x0[i],B[i],B[i]) for i in range(len(B))]
mymap = mcolors.LinearSegmentedColormap('mymap',cmap_dict)
return mymap
Example #8
| Source File: multi_scatter.py From glue-vispy-viewers with BSD 2-Clause "Simplified" License | 5 votes |
|
def set_color(self, label, rgb):
if isinstance(rgb, str):
rgb = ColorConverter().to_rgb(rgb)
self.layers[label]['color'] = np.asarray(rgb)
self._update()
Example #9
| Source File: layer_artist.py From glue-vispy-viewers with BSD 2-Clause "Simplified" License | 5 votes |
|
def _update_cmap_from_color(self):
cmap = get_translucent_cmap(*ColorConverter().to_rgb(self.state.color))
self._multivol.set_cmap(self.id, cmap)
self.redraw()
Example #10
| Source File: math_flowable.py From rst2pdf with MIT License | 4 votes |
|
def drawOn(self, canv, x, y, _sW=0):
if _sW and hasattr(self, 'hAlign'):
from reportlab.lib.enums import TA_LEFT, TA_CENTER, TA_RIGHT, TA_JUSTIFY
a = self.hAlign
if a in ('CENTER', 'CENTRE', TA_CENTER):
x = x + 0.5 * _sW
elif a in ('RIGHT', TA_RIGHT):
x = x + _sW
elif a not in ('LEFT', TA_LEFT):
raise ValueError("Bad hAlign value " + str(a))
height = 0
if HAS_MATPLOTLIB:
global fonts
canv.saveState()
canv.translate(x, y)
try:
(
width,
height,
descent,
glyphs,
rects,
used_characters,
) = self.parser.parse(
enclose(self.s), 72, prop=FontProperties(size=self.fontsize)
)
for ox, oy, fontname, fontsize, num, symbol_name in glyphs:
if not fontname in fonts:
fonts[fontname] = fontname
pdfmetrics.registerFont(TTFont(fontname, fontname))
canv.setFont(fontname, fontsize)
col_conv = ColorConverter()
rgb_color = col_conv.to_rgb(self.color)
canv.setFillColorRGB(rgb_color[0], rgb_color[1], rgb_color[2])
canv.drawString(ox, oy, chr(num))
canv.setLineWidth(0)
canv.setDash([])
for ox, oy, width, height in rects:
canv.rect(ox, oy + 2 * height, width, height, fill=1)
except:
# FIXME: report error
col_conv = ColorConverter()
rgb_color = col_conv.to_rgb(self.color)
canv.setFillColorRGB(rgb_color[0], rgb_color[1], rgb_color[2])
canv.drawString(0, 0, self.s)
canv.restoreState()
else:
canv.saveState()
canv.drawString(x, y, self.s)
canv.restoreState()
if self.label:
log.info('Drawing equation-%s' % self.label)
canv.bookmarkHorizontal('equation-%s' % self.label, 0, height)
Example #11
| Source File: math_flowable.py From rst2pdf with MIT License | 4 votes |
|
def genImage(self):
"""Create a PNG from the contents of this flowable.
Required so we can put inline math in paragraphs.
Returns the file name.
The file is caller's responsability.
"""
dpi = 72
scale = 10
try:
import Image
import ImageFont
import ImageDraw
import ImageColor
except ImportError:
from PIL import (
Image,
ImageFont,
ImageDraw,
ImageColor,
)
if not HAS_MATPLOTLIB:
img = Image.new('RGBA', (120, 120), (255, 255, 255, 0))
else:
width, height, descent, glyphs, rects, used_characters = self.parser.parse(
enclose(self.s), dpi, prop=FontProperties(size=self.fontsize)
)
img = Image.new(
'RGBA', (int(width * scale), int(height * scale)), (255, 255, 255, 0)
)
draw = ImageDraw.Draw(img)
for ox, oy, fontname, fontsize, num, symbol_name in glyphs:
font = ImageFont.truetype(fontname, int(fontsize * scale))
tw, th = draw.textsize(chr(num), font=font)
# No, I don't understand why that 4 is there.
# As we used to say in the pure math
# department, that was a numerical solution.
col_conv = ColorConverter()
fc = col_conv.to_rgb(self.color)
rgb_color = (int(fc[0] * 255), int(fc[1] * 255), int(fc[2] * 255))
draw.text(
(ox * scale, (height - oy - fontsize + 4) * scale),
chr(num),
font=font,
fill=rgb_color,
)
for ox, oy, w, h in rects:
x1 = ox * scale
x2 = x1 + w * scale
y1 = (height - oy) * scale
y2 = y1 + h * scale
draw.rectangle([x1, y1, x2, y2], (0, 0, 0))
fh, fn = tempfile.mkstemp(suffix=".png")
os.close(fh)
img.save(fn)
return fn
