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Commit 624d161

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style enhancements; and new styles from Chandrakant
1 parent 111a0a5 commit 624d161

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5 files changed

+264
-19
lines changed

5 files changed

+264
-19
lines changed

‎examples/scratch_pad/issues/issue#241_loop_all_styles.ipynb

Lines changed: 180 additions & 13 deletions
Large diffs are not rendered by default.

‎src/mplfinance/_styledata/__init__.py

Lines changed: 12 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -16,6 +16,8 @@
1616
from mplfinance._styledata import binance
1717
from mplfinance._styledata import kenan
1818
from mplfinance._styledata import ibd
19+
from mplfinance._styledata import binancedark
20+
from mplfinance._styledata import tradingview
1921

2022
_style_names = [n for n in dir() if not n.startswith('_')]
2123

@@ -25,19 +27,29 @@
2527
eval(cmd)
2628

2729
def _validate_style(style):
30+
# Check for mandatory style keys:
2831
keys = ['base_mpl_style','marketcolors','mavcolors','y_on_right',
2932
'gridcolor','gridstyle','facecolor','rc' ]
3033
for key in keys:
3134
if key not in style.keys():
3235
err = f'Key "{key}" not found in style:\n\n {style}'
3336
raise ValueError(err)
3437

38+
# Check for mandatory marketcolor keys:
3539
mktckeys = ['candle','edge','wick','ohlc','volume','alpha']
3640
for key in mktckeys:
3741
if key not in style['marketcolors'].keys():
3842
err = f'Key "{key}" not found in marketcolors for style:\n\n {style}'
3943
raise ValueError(err)
4044

45+
# The following keys are not mandatory in the style file,
46+
# but maybe mandatory in the code (to keep the code simpler)
47+
# so we set default values here:
48+
if 'vcedge' not in style['marketcolors']:
49+
style['marketcolors']['vcedge'] = style['marketcolors']['volume']
50+
if 'vcdopcod' not in style['marketcolors']:
51+
style['marketcolors']['vcdopcod'] = False
52+
4153
#print('type(_styles)=',type(_styles))
4254
#print('_styles=',_styles)
4355
for s in _styles.keys():
Lines changed: 27 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,27 @@
1+
style = dict(style_name = 'binancedark',
2+
base_mpl_style= 'dark_background',
3+
marketcolors = {'candle' : {'up': '#3dc985', 'down': '#ef4f60'},
4+
'edge' : {'up': '#3dc985', 'down': '#ef4f60'},
5+
'wick' : {'up': '#3dc985', 'down': '#ef4f60'},
6+
'ohlc' : {'up': 'green', 'down': 'red'},
7+
'volume' : {'up': '#247252', 'down': '#82333f'},
8+
'vcedge' : {'up': '#247252', 'down': '#82333f'},
9+
'vcdopcod' : False,
10+
'alpha' : 1.0,
11+
},
12+
mavcolors = ['#ffc201','#ff10ff','#cd0468','#1f77b4',
13+
'#ff7f0e','#2ca02c','#40e0d0'],
14+
y_on_right = True,
15+
gridcolor = None,
16+
gridstyle = '--',
17+
facecolor = None,
18+
rc = [ ('axes.grid','True'),
19+
('axes.grid.axis' , 'y'),
20+
('axes.edgecolor' , '#474d56' ),
21+
('axes.titlecolor','red'),
22+
('figure.titlesize', 'x-large' ),
23+
('figure.titleweight','semibold'),
24+
('figure.facecolor', '#0a0a0a' ),
25+
],
26+
base_mpf_style= 'binancedark'
27+
)
Lines changed: 26 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,26 @@
1+
style = dict(style_name = 'tradingview',
2+
base_mpl_style= 'fast',
3+
marketcolors = {'candle' : {'up': '#26a69a', 'down': '#ef5350'},
4+
'edge' : {'up': '#26a69a', 'down': '#ef5350'},
5+
'wick' : {'up': '#26a69a', 'down': '#ef5350'},
6+
'ohlc' : {'up': '#26a69a', 'down': '#ef5350'},
7+
'volume' : {'up': '#26a69a', 'down': '#ef5350'},
8+
'vcedge' : {'up': 'white' , 'down': 'white' },
9+
'vcdopcod' : False,
10+
'alpha' : 1.0,
11+
'volume_alpha': 0.65,
12+
},
13+
mavcolors = ['#2962ff','#2962ff',],
14+
y_on_right = True,
15+
gridcolor = None,
16+
gridstyle = '--',
17+
facecolor = None,
18+
rc = [ ('axes.grid','True'),
19+
('axes.edgecolor' , 'grey' ),
20+
('axes.titlecolor','red'),
21+
('figure.titlesize', 'x-large' ),
22+
('figure.titleweight','semibold'),
23+
('figure.facecolor', 'white' ),
24+
],
25+
base_mpf_style = 'tradingview'
26+
)

‎src/mplfinance/plotting.py

Lines changed: 19 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -383,7 +383,7 @@ def _valid_plot_kwargs():
383383
'Validator' : lambda value: isinstance(value, (list,tuple)) and len(value) == 2
384384
and all([isinstance(v,(int,float)) for v in value])},
385385

386-
'volume_alpha' : { 'Default' : 1, # alpha of Volume bars
386+
'volume_alpha' : { 'Default' : None, # alpha of Volume bars
387387
'Description' : 'opacity for Volume bar: 0.0 (transparent) to 1.0 (opaque)',
388388
'Validator' : lambda value: isinstance(value,(int,float)) or
389389
all([isinstance(v,(int,float)) for v in value]) },
@@ -673,7 +673,8 @@ def plot( data, **kwargs ):
673673

674674
datalen = len(xdates)
675675
if config['volume']:
676-
vup,vdown = style['marketcolors']['volume'].values()
676+
mc = style['marketcolors']
677+
vup,vdown = mc['volume'].values()
677678
#-- print('vup,vdown=',vup,vdown)
678679
vcolors = _updown_colors(vup, vdown, opens, closes, use_prev_close=style['marketcolors']['vcdopcod'])
679680
#-- print('len(vcolors),len(opens),len(closes)=',len(vcolors),len(opens),len(closes))
@@ -682,9 +683,21 @@ def plot( data, **kwargs ):
682683
w = config['_width_config']['volume_width']
683684
lw = config['_width_config']['volume_linewidth']
684685

685-
adjc = _adjust_color_brightness(vcolors,0.90)
686-
valp = config['volume_alpha']
687-
volumeAxes.bar(xdates,volumes,width=w,linewidth=lw,color=vcolors,ec=adjc,alpha=valp)
686+
veup, vedown = mc['vcedge'].values()
687+
if mc['volume'] == mc['vcedge']:
688+
edgecolors = _adjust_color_brightness(vcolors,0.90)
689+
elif veup != vedown:
690+
edgecolors = _updown_colors(veup, vedown, opens, closes, use_prev_close=style['marketcolors']['vcdopcod'])
691+
else:
692+
edgecolors = veup
693+
694+
if config['volume_alpha']:
695+
valp = config['volume_alpha']
696+
elif 'volume_alpha' in mc:
697+
valp = mc['volume_alpha']
698+
else:
699+
valp = 1.0
700+
volumeAxes.bar(xdates,volumes,width=w,linewidth=lw,color=vcolors,ec=edgecolors,alpha=valp)
688701
if config['volume_ylim'] is not None:
689702
vymin = config['volume_ylim'][0]
690703
vymax = config['volume_ylim'][1]
@@ -911,7 +924,7 @@ def plot( data, **kwargs ):
911924
else:
912925
title = config['title'] # config['title'] is a string
913926
fig.suptitle(title,**title_kwargs)
914-
927+
915928

916929
if config['axtitle'] is not None:
917930
axA1.set_title(config['axtitle'])

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