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examples4.py
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examples4.py
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""" Examples set 4. http://datadraw.org
Usage: python examples4.py .... creates some svg files in cwd
Or invoked as part of the flask web app.
Prerequisites:
a python3.6+ virtual environment; pip -r requirements.txt
"""
from datadraw import DataDraw, write_svgfile
from sampledata.wind_12hours import wind_12hours
from sampledata.wind_3days import wind_3days
from sampledata.incidents_12years import incidents_12years
from sampledata.webhits_3weeks import webhits_3weeks
def run_all():
ex = Examples4()
svgset = {}
svgset['axisdemo'] = ex.axisdemo()
svgset['axis_3days'] = ex.axis_3days()
svgset['axis_2days'] = ex.axis_2days()
svgset['axis_12years'] = ex.axis_12years()
svgset['axis_3years'] = ex.axis_3years(mode='showyears')
svgset['axis_3years_fy'] = ex.axis_3years(mode='showfy')
svgset['axis_3weeks'] = ex.axis_3weeks(mode='weekdays')
svgset['axis_3weeks_mon'] = ex.axis_3weeks(mode='monthdays')
svgset['axis_3weeks_webhits'] = ex.axis_3weeks(mode='webhits')
svgset['axis_48hours'] = ex.axis_48hours(mode='full')
svgset['axis_48hours_partial'] = ex.axis_48hours(mode='partial')
svgset['webhits'] = ex.axis_3weeks(mode='webhits')
return svgset
class Examples4:
def __init__(self):
self.dd = DataDraw()
def axisdemo(self):
""" several plotting areas, w/ various numeric, categorical axis options """
dd = self.dd
dd.svgbegin(width=800, height=600)
dd.settext(color='#777', save=True)
# left column ... X categorical space...
cats = ['Ohio', 'Kansas', 'Michigan', 'Oklahoma', 'Mississippi', 'New Mexico',
'Wisconsin', 'South Dakota', 'New Hampshire', 'Georgia']
dd.setspace('X', svgrange=(50,350), categorical=cats) # stays in effect for all
dd.setspace('Y', svgrange=(500,550), datarange=(0,10))
dd.axis('X', tics=-8, stubrotate=40)
dd.axis('Y', tics=-10, inc=5)
dd.settext(color='#77a')
dd.plotlabels(title='Categorical X (stubs rotated 40)')
dd.settext(restore=True)
dd.setspace('Y', svgrange=(300,350), datarange=(0,10))
dd.axis('X', tics=5, stubrotate=-45)
dd.axis('Y', inc=5)
dd.axis('Y', loc='right', inc=5)
dd.settext(color='#77a')
dd.plotlabels(title='Y axis on left and right.\nCategorical X (stubs rotated -45)')
dd.settext(restore=True)
dd.setspace('Y', svgrange=(60,180), datarange=(0,410), log=True)
dd.setline(width=0.5, dash='4,1')
dd.axis('Y', tics=8, grid=True, inc=10, stubcull=12)
dd.settext(color='#77a')
dd.plotlabels(title='Y log space with stubcull')
dd.setline(restore=True)
dd.settext(restore=True)
dd.plotbacking(outline=True)
### right column ... X numeric space....
dd.setspace('X', svgrange=(450,750), datarange=(0,10000)) # stays in effect for all
catlist=['Group A', 'Group B', 'Group C']
dd.setspace('Y', svgrange=(500,550), categorical=catlist)
dd.axis('X', tics=-4, comma000=True )
dd.axis('Y', tics=5)
dd.settext(color='#77a')
dd.plotlabels(title='Categorical Y, numeric X (stubs with commas)')
dd.settext(restore=True)
dd.setspace('Y', svgrange=(300,350), categorical=catlist)
dd.axis('X', loc='top', tics=4, stubrange=(2000,8000), comma000=True, stubrotate=-55)
dd.axis('Y', stubrotate=20)
dd.settext(color='#77a', anchor='middle', adjust=(10,-30))
dd.plotlabels(title='Y stubs rotated 20.\nNumeric X axis at top w/ limited stubrange')
dd.settext(restore=True)
return dd.svgresult()
""" datetime axis examples begin here """
def axis_3days(self):
""" axis demo: 3 days with date shown on midnight crossing """
dd = self.dd
dd.svgbegin(width=620, height=80)
dd.setdt('%Y-%m-%d %H:%M:%S')
for row in wind_3days:
dd.findrange(dd.intdt(row[0]))
xrange = dd.findrange_result(nearest='6hour')
dd.setspace('X', svgrange=(20,600), datarange=xrange)
dd.setspace('Y', svgrange=(60,80), datarange=(0,10)) # arbitrary
# do 1st X axis scale on 6hour intervals
hourstubs = dd.datestubs(xrange, inc='6hour', dtformat='%H:%M', terse=True)
dd.axis('X', stublist=hourstubs, tics=-5)
# 2nd X axis scale to show date at day boundary / midnite crossings
daystubs = dd.datestubs(xrange, inc='day', crossings=True, dtformat='%b %d')
dd.axis('X', stublist=daystubs, loc='bottom-20', axisline=None)
return dd.svgresult()
def axis_2days(self):
""" axis demo: 8 hours with date shown on midnight crossing """
dd = self.dd
dd.svgbegin(width=620, height=80)
dd.setdt( '%Y-%m-%d %H:%M:%S' )
istart = dd.intdt('2022-11-17 20:00:00') # select data from this range
istop = dd.intdt('2022-11-18 05:00:00')
for row in wind_3days:
idt = dd.intdt(row[0])
if idt >= istart and idt <= istop:
dd.findrange(idt) # use inrange data only
xrange = dd.findrange_result(nearest='hour')
dd.setspace('X', svgrange=(20,600), datarange=xrange)
dd.setspace('Y', svgrange=(60,80), datarange=(0,10)) # arbitrary
# do 1st X axis scale on hours..
hourstubs = dd.datestubs(xrange, inc='hour', dtformat='%H:%M', terse=True)
dd.axis('X', stublist=hourstubs, tics=-5)
# 2nd X axis scale to show date at day boundary / midnite crossings
daystubs = dd.datestubs(xrange, inc='day', crossings=True, dtformat='%b %d')
dd.axis('X', stublist=daystubs, loc='bottom-20', axisline=None)
return dd.svgresult()
def axis_12years(self):
""" axis demo: 12+ years with year-boundary crossing labelled """
dd = self.dd
dd.svgbegin(width=620, height=150)
dd.setdt('%Y-%m-%d')
for date in incidents_12years:
dd.findrange(dd.intdt(date))
xrange = dd.findrange_result(nearest='year')
dd.setspace('X', svgrange=(20,600), datarange=xrange)
dd.setspace('Y', svgrange=(60,140), datarange=(0,10)) # arbitrary
# X axis scale using years..
yearstubs = dd.datestubs(xrange, inc='year', dtformat='%Y')
dd.axis('X', stublist=yearstubs, tics=-8)
# do a 2nd x axis scale to get tic marks every 3 months...
minortics = dd.datestubs(xrange, inc='3month', dtformat='')
dd.axis('X', stublist=minortics, tics=-5, axisline=None)
# quick histogram of occurrances using upward-clustered data points
# adjust offset to bring max in range; tolerance adjusts 'bin size'
dd.setclustering(mode='upward', tolerance=2, offset=0.5)
for date in sorted(incidents_12years):
dd.datapoint(x=dd.intdt(date), y=0.1, symbol='(vrect)',
diameter=4, color='#77a')
return dd.svgresult()
def axis_3years(self, mode):
""" axis demo: 3+ years with months labeled. mode is either
'showyears' to show year crossings, or 'showfy' to show fiscal year crossings.
"""
dd = self.dd
dd.svgbegin(width=620, height=80)
dd.setdt('%Y-%m-%d', fymonth1=7) # set fiscal year starting July
for date in incidents_12years:
if date[:3] == '202' or date[:7] == '2019-12': # use only late 2019 onward
dd.findrange(dd.intdt(date))
xrange = dd.findrange_result(nearest='3month')
dd.setspace('X', svgrange=(20,600), datarange=xrange)
dd.setspace('Y', svgrange=(60,100), datarange=(0,10)) # arbitrary
monthstubs = dd.datestubs(xrange, inc='month', dtformat='%b', terse=True)
dd.settext(ptsize=8)
dd.axis('X', stublist=monthstubs, tics=-5)
dd.settext(restore=True)
quarters = dd.datestubs(xrange, inc='3month', crossings=True, dtformat='') # show tics only
dd.axis('X', stublist=quarters, axisline=None, tics=10)
if mode == 'showyears':
inc = 'year'
elif mode == 'showfy':
inc = 'fy'
dd.setdt(fymonth1=7) # set fiscal year starting July
years = dd.datestubs(xrange, inc=inc, crossings=True, dtformat='%Y') # format ignored for FY
dd.axis('X', stublist=years, axisline=None, loc='bottom-20',
stubcull=40, stubanchor='start') # stubcull avoids colliding; left-aligned
return dd.svgresult()
def axis_3weeks(self, mode):
""" axis demo: 3 weeks. mode is either 'weekdays', 'monthdays', or 'webhits'.
'webhits' does both weekdays and monthdays and plots some data in green.
"""
dd = self.dd
ht = 150 if mode == 'webhits' else 80
dd.svgbegin(width=620, height=ht)
dd.setdt('%Y-%m-%d %H:%M:%S.%f', weekday0=6) # (seconds component includes milliseconds)
# set beginning of week to Sunday (6)
for timestamp in webhits_3weeks:
dd.findrange(dd.intdt(timestamp))
xrange = dd.findrange_result(nearest='day') # or, nearest='week'
dd.setspace('X', svgrange=(20,600), datarange=xrange)
if mode == 'webhits':
dd.setspace('Y', svgrange=(60,140), datarange=(0,10)) # arbitrary
else:
dd.setspace('Y', svgrange=(60,100), datarange=(0,10)) # arbitrary
sanc = None
x2drop = 20
if mode == 'weekdays':
# x stubs are weekdays, with MMdd on each week boundary
daystubs = dd.datestubs(xrange, inc='day', dtformat='%a', terse=True)
crossings = dd.datestubs(xrange, inc='week', crossings=True, dtformat='%b%d')
elif mode == 'monthdays':
daystubs = dd.datestubs(xrange, inc='day', dtformat='%d', terse=True)
crossings = dd.datestubs(xrange, inc='month', crossings=True, dtformat='%b')
# sanc = 'start' # stubs left-aligned
elif mode in ['both', 'webhits']:
daystubs = dd.datestubs(xrange, inc='day', dtformat='%a\n%d', terse=True)
crossings = dd.datestubs(xrange, inc='month', crossings=True, dtformat="%b'%y")
x2drop = 32
sanc = 'start' # stubs left-aligned
# 2 X axis passes....
dd.axis('X', stublist=daystubs, tics=-5)
dd.axis('X', stublist=crossings, loc=f'bottom-{x2drop}', axisline=None, stubanchor=sanc)
if mode == 'webhits':
# quick histogram of occurrances using upward-clustered data points
dd.setclustering(mode='upward', tolerance=2, offset=0.2)
for timestamp in sorted(webhits_3weeks):
dd.datapoint(x=dd.intdt(timestamp), y=0.1, symbol='(vrect)', diameter=4, color='#7a7')
return dd.svgresult()
def axis_48hours(self, mode):
""" axis demo: times. mode is either 'full' or 'partial' """
dd = self.dd
dd.svgbegin(width=620, height=80)
dd.setdt('%Y-%m-%d %H:%M:%S.%f', weekday0=6) # (seconds component includes milliseconds)
# set beginning of week to Sunday (6)
for timestamp in webhits_3weeks:
# use only a portion of the data (2 days, or a chunk of hours w/ midnite crossing)
if (mode == 'full' and timestamp[:10] in ['2023-02-07', '2023-02-08']) or \
(mode == 'partial' and timestamp[:12] in ['2023-02-07 1', '2023-02-08 0']):
dd.findrange(dd.intdt(timestamp))
xrange = dd.findrange_result(nearest='3hour')
dd.setspace('X', svgrange=(20,585), datarange=xrange)
dd.setspace('Y', svgrange=(60,100), datarange=(0,10)) # arbitrary
sanc = None
if mode == 'full':
inc = '6hour'
fmt = '%I%p'
elif mode == 'partial':
inc = '3hour'
fmt = '%H:00'
sanc = 'start' # stubs left-aligned
hourstubs = dd.datestubs(xrange, inc=inc, dtformat=fmt, terse=True)
crossings = dd.datestubs(xrange, inc='day', crossings=True, dtformat='%b%d')
dd.axis('X', stublist=hourstubs, tics=-5)
dd.axis('X', stublist=crossings, loc=f'bottom-20', axisline=None, stubanchor=sanc)
return dd.svgresult()
if __name__ == "__main__":
svgset = run_all()
print('writing svg to files...')
for key in svgset:
print(f' {key}.svg ...')
write_svgfile(svgset[key], f'{key}.svg')
print('Done.')