def test_to_svg_file_name(self):
chart1 = leather.Chart()
chart1.add_dots(self.data1)
chart2 = leather.Chart()
chart2.add_dots(self.data2)
grid = leather.Grid()
grid.add_many([chart1, chart2, chart1])
grid.to_svg('.test.svg')
self.assertTrue(os.path.exists(TEST_SVG))
def test_to_svg_file_handle(self):
chart1 = leather.Chart()
chart1.add_dots(self.data1)
chart2 = leather.Chart()
chart2.add_dots(self.data2)
grid = leather.Grid()
grid.add_many([chart1, chart2, chart1])
with open('.test.svg', 'w') as f:
grid.to_svg(f)
self.assertTrue(os.path.exists(TEST_SVG))
def test_to_svg_file_name(self):
chart = leather.Chart()
chart.add_dots(self.data1)
chart.to_svg('.test.svg')
self.assertTrue(os.path.exists(TEST_SVG))
def scatterplot(self, x=0, y=1, path=None, width=None, height=None):
"""
Render a scatterplot using :class:`leather.Chart`.
:param x:
The name or index of a column to plot as the x-axis. Defaults to the
first column in the table.
:param y:
The name or index of a column to plot as the y-axis. Defaults to the
second column in the table.
:param path:
If specified, the resulting SVG will be saved to this location. If
:code:`None` and running in IPython, then the SVG will be rendered
inline. Otherwise, the SVG data will be returned as a string.
:param width:
The width of the output SVG.
:param height:
The height of the output SVG.
"""
if type(x) is int:
x_name = self.column_names[x]
else:
x_name = x
if type(y) is int:
y_name = self.column_names[y]
else:
y_name = y
chart = leather.Chart()
chart.add_x_axis(name=x_name)
chart.add_y_axis(name=y_name)
chart.add_dots(self, x=x, y=y)
return chart.to_svg(path=path, width=width, height=height)
def test_add_many(self):
chart1 = leather.Chart()
chart1.add_dots(self.data1)
chart2 = leather.Chart()
chart2.add_dots(self.data2)
grid = leather.Grid()
grid.add_many([chart1, chart2, chart1])
svg = self.render_chart(grid)
self.assertElementCount(svg, '.axis', 6)
self.assertElementCount(svg, '.series', 3)
self.assertElementCount(svg, '.dots', 3)
self.assertElementCount(svg, 'circle', 13)
def createChart(chartData, fileName):
startDate = convertStringToDate(chartData["start_at"])
endDate = convertStringToDate(chartData["end_at"])
baseCurrency = chartData["base"]
chartTitle = 'Exchange rate for {0}'.format(baseCurrency)
chart = leather.Chart(chartTitle)
chart.add_x_axis(tick_formatter = lambda a, b, c : convertDateToString(a))
chart.add_x_scale(startDate, endDate)
ratesData = chartData["rates"]
datesList = list(ratesData.keys())
datesList.sort()
lineDataset = []
tempDate = datesList[0]
labelsList = list(ratesData[tempDate].keys())
labelsList.sort()
numberOfLines = len(labelsList)
for _ in range(numberOfLines):
lineDataset.append([])
for i in range(numberOfLines):
for date in datesList:
tempLabel = labelsList[i]
dayRate = ratesData[date][tempLabel]
lineDataset[i].append(dayRate)
datesList = [ convertStringToDate(dateString) for dateString in datesList ]
for i in range(numberOfLines):
lineData = tuple(zip(datesList, lineDataset[i]))
chart.add_line(lineData, name = labelsList[i])
chart.to_svg(fileName)
def make(values,
title=None,
x_name: str = None,
y_name: str = None) -> BytesIO:
"""Make chart image from values and return as stream"""
if not isinstance(values, list):
values = list(values)
# sort by x
values = sorted(values, key=operator.itemgetter(0))
bio = BytesIO()
bio.name = 'chart.jpeg'
chart = leather.Chart(title)
chart.add_x_axis(name=x_name, tick_formatter=_tick_formatter)
chart.add_y_axis(name=y_name, tick_formatter=_tick_formatter)
chart.add_line(values)
svg_data = chart.to_svg(width=1200, height=800)
bio.write(cairosvg.svg2png(svg_data))
bio.seek(0)
return bio
def svg_data_for_query(queryset, field, chart_name, timezone, exclude_today=False):
data, total_count = series_data_for_model(
queryset, field, timezone, exclude_today=exclude_today)
data_prev_period, total_count_prev_period = series_data_for_model(
queryset, field, timezone, prev_period=True, exclude_today=exclude_today)
# Show every date on the x axis
x_axis_ticks = []
for item in data:
x_axis_ticks.append(item[0])
chart = leather.Chart()
chart.add_x_axis(ticks=x_axis_ticks)
# Start at 0 - Turn this into an option
y_max = max([item[1] for item in data])
y_max_prev_period = max([item[1] for item in data_prev_period])
chart.add_y_scale(0, max([y_max, y_max_prev_period]))
current_label, prev_period_label = series_labels(total_count, total_count_prev_period)
chart.add_line(data, name=current_label, stroke_color=PRIMARY_STROKE_COLOR)
chart.add_line(data_prev_period, name=prev_period_label, stroke_color=PREV_PERIOD_STROKE_COLOR, stroke_dasharray='5')
chart.to_svg('/tmp/{}.svg'.format(chart_name), width=480, height=240)
with open('/tmp/{}.svg'.format(chart_name)) as svgfile:
svg_data = svgfile.read()
svg2png(url='/tmp/{}.svg'.format(chart_name), write_to='/tmp/{}.png'.format(chart_name), scale=2)
return svg_data
def column_chart(self, label=0, value=1, path=None, width=None, height=None):
"""
Render a column chart using :class:`leather.Chart`.
:param label:
The name or index of a column to plot as the labels of the chart.
Defaults to the first column in the table.
:param value:
The name or index of a column to plot as the values of the chart.
Defaults to the second column in the table.
:param path:
If specified, the resulting SVG will be saved to this location. If
:code:`None` and running in IPython, then the SVG will be rendered
inline. Otherwise, the SVG data will be returned as a string.
:param width:
The width of the output SVG.
:param height:
The height of the output SVG.
"""
if type(label) is int:
label_name = self.column_names[label]
else:
label_name = label
if type(value) is int:
value_name = self.column_names[value]
else:
value_name = value
chart = leather.Chart()
chart.add_x_axis(name=label_name)
chart.add_y_axis(name=value_name)
chart.add_columns(self, x=label, y=value)
return chart.to_svg(path=path, width=width, height=height)
def test_add_one(self):
chart1 = leather.Chart()
chart1.add_dots(self.data1)
chart2 = leather.Chart()
chart2.add_dots(self.data2)
grid = leather.Grid()
grid.add_one(chart1)
grid.add_one(chart2)
svg = self.render_chart(grid)
self.assertElementCount(svg, '.axis', 4)
self.assertElementCount(svg, '.series', 2)
self.assertElementCount(svg, '.dots', 2)
self.assertElementCount(svg, 'circle', 9)
def test_unicode(self):
chart = leather.Chart()
chart.add_bars([(1, u'👍')])
svg = self.render_chart(chart)
self.assertElementCount(svg, '.axis', 2)
self.assertElementCount(svg, '.series', 1)
def test_to_svg_file_handle(self):
chart = leather.Chart()
chart.add_dots(self.data1)
with open('.test.svg', 'w') as f:
chart.to_svg(f)
self.assertTrue(os.path.exists(TEST_SVG))
def reset():
"""
Setzt das momentane Diagramm zurück.
:return: None
"""
global _chart, _count
_chart = leather.Chart()
_count = 0
def test_set_axes(self):
chart = leather.Chart()
chart.set_x_axis(leather.Axis(ticks=3))
chart.set_y_axis(leather.Axis(ticks=3))
chart.add_dots(self.data1)
svg = self.render_chart(chart)
self.assertTickLabels(svg, 'left', ['3', '6', '9'])
self.assertTickLabels(svg, 'bottom', ['4', '8', '0'])
def test_add_scales(self):
chart = leather.Chart()
chart.add_x_scale(0, 20)
chart.add_y_scale(0, 20)
chart.add_dots(self.data1)
svg = self.render_chart(chart)
self.assertTickLabels(svg, 'left', ['5', '10', '15', '20', '0'])
self.assertTickLabels(svg, 'bottom', ['5', '10', '15', '20', '0'])
def test_add_axes(self):
chart = leather.Chart()
chart.add_x_axis(ticks=[0, 4, 8])
chart.add_y_axis(ticks=[3, 6, 9])
chart.add_dots(self.data1)
svg = self.render_chart(chart)
self.assertTickLabels(svg, 'left', ['3', '6', '9'])
self.assertTickLabels(svg, 'bottom', ['4', '8', '0'])
def test_single_series(self):
chart = leather.Chart()
chart.add_dots(self.data1)
svg = self.render_chart(chart)
self.assertElementCount(svg, '.axis', 2)
self.assertElementCount(svg, '.series', 1)
self.assertElementCount(svg, '.dots', 1)
self.assertElementCount(svg, 'circle', 4)
def test_ticks(self):
chart = leather.Chart()
chart.add_dots(self.data)
axis = leather.Axis(ticks=[-12, 0, 17, 44, 87, 99])
chart.set_x_axis(axis)
svg = self.render_chart(chart)
self.assertTickLabels(svg, 'bottom', ['-12', '17', '44', '87', '99', '0'])
def test_ticks(self):
chart = leather.Chart()
chart.add_dots(self.data)
axis = leather.Axis(ticks=6)
chart.set_x_axis(axis)
svg = self.render_chart(chart)
self.assertTickLabels(svg, 'bottom', ['2', '4', '6', '8', '10', '0'])
def test_scale_domain_warning(self):
chart = leather.Chart()
chart.add_x_scale(4, 7)
chart.add_y_scale(0, 20)
chart.add_dots(self.data1)
with warnings.catch_warnings():
warnings.simplefilter('error')
with self.assertRaises(UserWarning):
self.render_chart(chart)
def report(request):
"""Generates all reports accessible to a user."""
if request.user.profile.admin_not_simulating():
# Admin sees reports for all checks
checks = Check.objects.all()
heading = 'Reports for All Checks'
elif request.user.profile.supervisor_up():
# Supervisor sees reports for a company
checks = Check.objects.filter(user__profile__company=request.user.profile.company)
heading = 'Reports for Company: {}'.format(request.user.profile.company)
else:
# Regular user sees reports for his checks.
checks = Check.objects.filter(user=request.user)
heading = 'Reports for Your Checks'
# Find out the start and end date
end_date = datetime.datetime.now().date()
start_date = end_date - datetime.timedelta(days=7)
if request.method == 'POST':
form = ReportForm(request.POST)
if form.is_valid():
start_date = form.cleaned_data['start_date']
end_date = form.cleaned_data['end_date']
else:
form = ReportForm()
logger.info(start_date)
# Generate the number of checks paid/not paid.
copy = checks.filter(date_created__date__range=(start_date, end_date))
paid = len([c for c in copy if c.paid])
not_paid = len(copy) - paid
data = [
(paid, 'Checks Paid'),
(not_paid, 'Checks Not Paid')
]
chart = leather.Chart('Checks Processed by CheckIt')
chart.add_bars(data)
chart.to_svg('checkit/static/img/bars.svg')
# Generate the charts (django-chartit)
paid_count_chart = generate_chart(checks, start_date, end_date, 'paid_date', 'count',
Count('paid_date'), 'Checks Paid by Date', 'Paid Date')
paid_total_chart = generate_chart(checks, start_date, end_date, 'paid_date', 'total',
Sum('amount_paid'), 'Total Revenue by Date', 'Date')
charts = [paid_count_chart, paid_total_chart]
for i in range(3):
group = 'letter{}_date'.format(i + 1)
chart = generate_chart(checks, start_date, end_date, group, 'count',
Count(group), 'Letter {} Generated by Date'.format(i + 1), 'Date')
charts.append(chart)
# Return all the charts to report view
context = {'charts': charts, 'form': form, 'heading': heading}
return render(request, 'report/report.html', context)
def make_chart(counter, name):
"""Make SVG charts and save them in /tmp.
:param counter: A counter object with counts for every year/month.
:param name: The name of the dataset to be used for the filename and the
legend.
:return: None, however, a file is created in /tmp named `name`.svg
"""
chart = leather.Chart(name)
chart.add_bars(sorted(counter.items(), key=lambda t: t[0]), x=1, y=0)
chart.to_svg('/tmp/%s.svg' % name.lower())
def make_time_graph(values, out_file, names=[]):
import leather
leather.theme.legend_font_family = 'Roboto'
leather.theme.legend_font_size = '12'
leather.theme.legend_color = '#999999'
leather.theme.tick_font_family = 'Roboto'
leather.theme.tick_font_size = '12'
leather.theme.tick_color = '#aaa'
colors = [
"#8c00e2",
"#1981d4",
"#00a22c",
"#ea8500",
"#e32d14",
"#ff72db",
"#00d69e",
"#1618db",
]
if len(names) != 0:
if len(names) != len(values):
print("You've given me " + str(len(values)) + ""
" series but " + str(len(names)) + " names. Aborting.")
return
# Find the earliest and latest dates in all series.
first_date_string = values[0][0][0]
last_date_string = values[0][-1][0]
for series in values:
for point in series:
if point[0] < first_date_string:
first_date_string = point[0]
if point[0] > last_date_string:
last_date_string = point[0]
first_date_parts = [int(v) for v in first_date_string.split("-")]
last_date_parts = [int(v) for v in last_date_string.split("-")]
first_date = datetime.combine(date(*first_date_parts), datetime.min.time())
last_date = datetime.combine(date(*last_date_parts), datetime.min.time())
chart = leather.Chart("")
chart.add_x_scale(first_date, last_date)
for i in range(len(values)):
name = names[i] if len(names) > i else ""
series = []
for point in values[i]:
date_parts = [int(p) for p in point[0].split("-")]
d = datetime.combine(date(*date_parts), datetime.min.time())
value = float(point[1])
series.append([d, value])
chart.add_line(series,
name=name,
width=0.75,
stroke_color=colors[i % len(colors)])
chart.to_svg("temp.svg")
os.system("convert -density 1000 temp.svg " + out_file)
os.system("rm temp.svg")
def test_tick_formatter(self):
chart = leather.Chart()
chart.add_dots(self.data)
def test_formatter(value, i, count):
return '%i+' % (value * 10)
axis = leather.Axis(tick_formatter=test_formatter)
chart.set_x_axis(axis)
svg = self.render_chart(chart)
self.assertTickLabels(svg, 'bottom', ['25+', '50+', '75+', '100+', '0+'])
def costChart(a, b):
data = [('Wind', float(a)), ('Solar', float(b))]
os.remove(
"/Users/jakechoward/Desktop/GreenSwitch/Nasa-Hackathon-2019-master/costSetup.svg"
)
chart = leather.Chart(
'Cost to implement 50% daily generation in your area')
chart.add_columns(data, fill_color='#8CC63F')
chart.to_svg('costSetup.svg')
return chart
def generate_chart(self):
import webbrowser
from colors import palette48_iwanthue as palette
if self.server_temp_counts[0]['filename'] == '':
txt = 'Nothing to plot'
self.status_lbl.label.configure(text=txt)
return None
if len(self.server_temp_counts) > len(palette):
txt = 'Plotting only avaialble for max %d files'.format(
len(palette))
self.status_lbl.label.configure(text=txt)
return None
filepath = os.path.join(self.path, 'results_chart.svg')
max_temp = float(self.temp_spiner.get())
colors = [
'rgb(%i, %i, %i)' % (color[0], color[1], color[2])
for color in palette
]
leather.theme.default_series_colors = colors
name = self.path.split('/')[-1]
name = self.path.split('\\')[-1]
chart = leather.Chart('Results for: ' + name)
chart.add_x_scale(15, 40)
chart.add_x_axis(ticks=[i for i in range(15, 40)])
ymax = 0
details = copy.deepcopy(self.server_temp_counts)
for file, color in zip(details, palette):
name = file['filename'][:-4]
del file['filename']
data = []
for x, y in file.items():
data.append((float(x), y))
ymax = max(ymax, y)
#color = 'rgb(%i, %i, %i)' % (color[0],color[1],color[2])
chart.add_line(data, name=name, width=1)
name = '%ddegC limit' % max_temp
chart.add_line([(max_temp, 0), (max_temp, ymax)],
name=name,
width=.5,
stroke_color='rgb(105,105,105)')
chart.to_svg(filepath)
url = "file://%s" % filepath
webbrowser.open(url, new=2)
def main(input_csv):
data_csv = input_csv
with open(data_csv) as f:
ur = UnicodeReader(f)
next(ur)
data = list(ur)[:]
row_size = len(data[0][:]) - 1
for row in data:
for index in range(row_size):
row[index + 1] = float(row[index +
1]) if row[index +
1] is not None else None
for value in range(3):
data_sorted = sorted(data, key=lambda x: x[value + 1], reverse=True)
chart = leather.Chart('Chart - CSV')
chart.add_bars(data_sorted[:30], x=(value + 1), y=0)
chart_output = 'generated/charts_leather_{0}.svg'.format(value)
chart.to_svg(chart_output)
print('[i] following chard was generated: "{0}"'.format(chart_output))
def validityChart(a, b):
data = [('Wind', float(a)), ('Solar', float(b))]
os.remove(
"/Users/jakechoward/Desktop/GreenSwitch/Nasa-Hackathon-2019-master/validSetup2.svg"
)
chart = leather.Chart('Validity Ranking')
chart.add_columns(data, fill_color='#8CD63F')
chart.to_svg('validSetup2.svg')
return chart
#def createChart()
#data = [
# ('Hello', 3),
# ('How', 5),
# ('Are', 9),
# ('You', 4)
#]
#chart = leather.Chart('Columns')
#chart.add_columns(data)
#chart.to_svg('examples/charts/columns.svg')
import leather
data = [(0, 3), (4, 5), (7, 9), (8, 4)]
chart = leather.Chart('Lines')
chart.add_lines(data)
chart.to_svg('examples/charts/lines.svg')
from datetime import date
import leather
data = [
(date(2015, 1, 1), 3),
(date(2015, 3, 1), 5),
(date(2015, 6, 1), 9),
(date(2015, 9, 1), 4)
]
chart = leather.Chart('Temporal')
chart.add_x_scale(date(2014, 1, 1), date(2016, 1, 1))
chart.add_line(data)
chart.to_svg('examples/charts/temporal.svg')
