Enable/disable vlm chart yranging (TO SQUASH)
Tyler Goodlet
parent
6ec9bae05d
commit
32295ecbd4
|
|
@ -79,14 +79,14 @@ def has_vlm(ohlcv: ShmArray) -> bool:
|
|||
|
||||
def update_fsp_chart(
|
||||
chart: ChartPlotWidget,
|
||||
flow,
|
||||
viz,
|
||||
graphics_name: str,
|
||||
array_key: Optional[str],
|
||||
**kwargs,
|
||||
|
||||
) -> None:
|
||||
|
||||
shm = flow.shm
|
||||
shm = viz.shm
|
||||
if not shm:
|
||||
return
|
||||
|
||||
|
|
@ -666,7 +666,7 @@ async def open_vlm_displays(
|
|||
shm = ohlcv
|
||||
ohlc_chart = linked.chart
|
||||
|
||||
chart = linked.add_plot(
|
||||
vlm_chart = linked.add_plot(
|
||||
name='volume',
|
||||
shm=shm,
|
||||
flume=flume,
|
||||
|
|
@ -682,10 +682,12 @@ async def open_vlm_displays(
|
|||
# the curve item internals are pretty convoluted.
|
||||
style='step',
|
||||
)
|
||||
vlm_chart.view.enable_auto_yrange()
|
||||
|
||||
# back-link the volume chart to trigger y-autoranging
|
||||
# in the ohlc (parent) chart.
|
||||
ohlc_chart.view.enable_auto_yrange(
|
||||
src_vb=chart.view,
|
||||
src_vb=vlm_chart.view,
|
||||
)
|
||||
|
||||
# force 0 to always be in view
|
||||
|
|
@ -707,7 +709,7 @@ async def open_vlm_displays(
|
|||
'''
|
||||
mx = 0
|
||||
for name in names:
|
||||
ymn, ymx = chart.maxmin(name=name)
|
||||
ymn, ymx = vlm_chart.maxmin(name=name)
|
||||
mx = max(mx, ymx)
|
||||
|
||||
return 0, mx
|
||||
|
|
@ -715,34 +717,33 @@ async def open_vlm_displays(
|
|||
# TODO: fix the x-axis label issue where if you put
|
||||
# the axis on the left it's totally not lined up...
|
||||
# show volume units value on LHS (for dinkus)
|
||||
# chart.hideAxis('right')
|
||||
# chart.showAxis('left')
|
||||
# vlm_chart.hideAxis('right')
|
||||
# vlm_chart.showAxis('left')
|
||||
|
||||
# send back new chart to caller
|
||||
task_status.started(chart)
|
||||
task_status.started(vlm_chart)
|
||||
|
||||
# should **not** be the same sub-chart widget
|
||||
assert chart.name != linked.chart.name
|
||||
assert vlm_chart.name != linked.chart.name
|
||||
|
||||
# sticky only on sub-charts atm
|
||||
last_val_sticky = chart.plotItem.getAxis(
|
||||
'right')._stickies.get(chart.name)
|
||||
last_val_sticky = vlm_chart.plotItem.getAxis(
|
||||
'right')._stickies.get(vlm_chart.name)
|
||||
|
||||
# read from last calculated value
|
||||
value = shm.array['volume'][-1]
|
||||
|
||||
last_val_sticky.update_from_data(-1, value)
|
||||
|
||||
vlm_curve = chart.update_graphics_from_flow(
|
||||
vlm_curve = vlm_chart.update_graphics_from_flow(
|
||||
'volume',
|
||||
# shm.array,
|
||||
)
|
||||
|
||||
# size view to data once at outset
|
||||
chart.view._set_yrange()
|
||||
vlm_chart.view._set_yrange()
|
||||
|
||||
# add axis title
|
||||
axis = chart.getAxis('right')
|
||||
axis = vlm_chart.getAxis('right')
|
||||
axis.set_title(' vlm')
|
||||
|
||||
if dvlm:
|
||||
|
|
@ -782,7 +783,7 @@ async def open_vlm_displays(
|
|||
# XXX: the main chart already contains a vlm "units" axis
|
||||
# so here we add an overlay wth a y-range in
|
||||
# $ liquidity-value units (normally a fiat like USD).
|
||||
dvlm_pi = chart.overlay_plotitem(
|
||||
dvlm_pi = vlm_chart.overlay_plotitem(
|
||||
'dolla_vlm',
|
||||
index=0, # place axis on inside (nearest to chart)
|
||||
axis_title=' $vlm',
|
||||
|
|
@ -850,7 +851,7 @@ async def open_vlm_displays(
|
|||
assert isinstance(shm, ShmArray)
|
||||
assert isinstance(flume, Flume)
|
||||
|
||||
flow = chart.draw_curve(
|
||||
viz = vlm_chart.draw_curve(
|
||||
name,
|
||||
shm,
|
||||
flume,
|
||||
|
|
@ -861,13 +862,7 @@ async def open_vlm_displays(
|
|||
style=style,
|
||||
pi=pi,
|
||||
)
|
||||
|
||||
# TODO: we need a better API to do this..
|
||||
# specially store ref to shm for lookup in display loop
|
||||
# since only a placeholder of `None` is entered in
|
||||
# ``.draw_curve()``.
|
||||
# viz = chart._vizs[name]
|
||||
assert flow.plot is pi
|
||||
assert viz.plot is pi
|
||||
|
||||
chart_curves(
|
||||
fields,
|
||||
|
|
@ -902,17 +897,17 @@ async def open_vlm_displays(
|
|||
# displayed and the curves are effectively the same minus
|
||||
# liquidity events (well at least on low OHLC periods - 1s).
|
||||
vlm_curve.hide()
|
||||
chart.removeItem(vlm_curve)
|
||||
vflow = chart._vizs['volume']
|
||||
vflow.render = False
|
||||
vlm_chart.removeItem(vlm_curve)
|
||||
vlm_viz = vlm_chart._vizs['volume']
|
||||
vlm_viz.render = False
|
||||
|
||||
# avoid range sorting on volume once disabled
|
||||
# chart.view.disable_auto_yrange()
|
||||
vlm_chart.view.disable_auto_yrange()
|
||||
|
||||
# Trade rate overlay
|
||||
# XXX: requires an additional overlay for
|
||||
# a trades-per-period (time) y-range.
|
||||
tr_pi = chart.overlay_plotitem(
|
||||
tr_pi = vlm_chart.overlay_plotitem(
|
||||
'trade_rates',
|
||||
|
||||
# TODO: dynamically update period (and thus this axis?)
|
||||
|
|
|
|||
Loading…
Reference in New Issue