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Code Issues 5 Pull Requests 7 Packages Projects Releases Wiki Activity

Implement `tickStrings` for price axis; use float_digits()

bar_select
Tyler Goodlet 2020-10-22 20:22:21 -04:00
parent 18dc809acb
commit 7be624de39
1 changed files with 12 additions and 10 deletions
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22
piker/ui/_axes.py
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@ -3,14 +3,13 @@ Chart axes graphics and behavior.
""" """
from typing import List from typing import List
# import numpy as np
import pandas as pd import pandas as pd
import pyqtgraph as pg import pyqtgraph as pg
from PyQt5 import QtCore, QtGui from PyQt5 import QtCore, QtGui
from PyQt5.QtCore import QPointF from PyQt5.QtCore import QPointF
from ._style import _font, hcolor from ._style import _font, hcolor
from ..data._source import float_digits
class PriceAxis(pg.AxisItem): class PriceAxis(pg.AxisItem):
@ -21,7 +20,7 @@ class PriceAxis(pg.AxisItem):
super().__init__(orientation='right') super().__init__(orientation='right')
self.setTickFont(_font) self.setTickFont(_font)
self.setStyle(**{ self.setStyle(**{
'textFillLimits': [(0, 0.5)], 'textFillLimits': [(0, 0.666)],
# 'tickTextWidth': 100, # 'tickTextWidth': 100,
# 'tickTextHeight': 20, # 'tickTextHeight': 20,
'tickFont': _font, 'tickFont': _font,
@ -35,11 +34,15 @@ class PriceAxis(pg.AxisItem):
# XXX: drop for now since it just eats up h space # XXX: drop for now since it just eats up h space
# def tickStrings(self, vals, scale, spacing): def tickStrings(self, vals, scale, spacing):
# digts = max(0, np.ceil(-np.log10(spacing * scale))) digits = float_digits(spacing * scale)
# return [
# ('{:<8,.%df}' % digts).format(v).replace(',', ' ') for v in vals # print(f'vals: {vals}\nscale: {scale}\nspacing: {spacing}')
# ] # print(f'digits: {digits}')
return [
('{:,.%df}' % digits).format(v).replace(',', ' ') for v in vals
]
class DynamicDateAxis(pg.AxisItem): class DynamicDateAxis(pg.AxisItem):
@ -83,7 +86,7 @@ class DynamicDateAxis(pg.AxisItem):
map(int, filter(lambda i: i < bars_len, indexes)) map(int, filter(lambda i: i < bars_len, indexes))
)] )]
# TODO: **don't** have this hard coded shift to EST # TODO: **don't** have this hard coded shift to EST
dts = pd.to_datetime(epochs, unit='s') #- 4*pd.offsets.Hour() dts = pd.to_datetime(epochs, unit='s') # - 4*pd.offsets.Hour()
return dts.strftime(self.tick_tpl[delay]) return dts.strftime(self.tick_tpl[delay])
def tickStrings(self, values: List[float], scale, spacing): def tickStrings(self, values: List[float], scale, spacing):
@ -245,7 +248,6 @@ class YSticky(YAxisLabel):
# TODO: add an `.index` to the array data-buffer layer # TODO: add an `.index` to the array data-buffer layer
# and make this way less shitty... # and make this way less shitty...
chart = self._chart chart = self._chart
name = chart.name
a = chart._array a = chart._array
fields = a.dtype.fields fields = a.dtype.fields
if fields and 'close' in fields: if fields and 'close' in fields: