The layout of the chart within the canvas can be set by using the layout property of an instance of a layout class.
The chart can be positioned within its container.
x
and
y
adjust position,
w
and
h
adjust the size . The units are proportions of the container. A chart cannot be positioned outside of its container and the width and height are the dominant constraints: if x + w > 1, then x = 1 - w.
In addition to the size and position, the mode for the relevant attribute can also be set to either factor or edge . Factor is the default:
layout.xMode = edge
The layoutTarget can be set to
outer
or
inner
。默认为
outer
:
layout.layoutTarget = inner
The position of the legend can be controlled either by setting its position:
r
,
l
,
t
,
b
,和
tr
, for right, left, top, bottom and top right respectively. The default is
r
.
legend.position = 'tr'
or applying a manual layout:
legend.layout = ManualLayout()
from openpyxl import Workbook, load_workbook from openpyxl.chart import ScatterChart, Series, Reference from openpyxl.chart.layout import Layout, ManualLayout wb = Workbook() ws = wb.active rows = [ ['Size', 'Batch 1', 'Batch 2'], [2, 40, 30], [3, 40, 25], [4, 50, 30], [5, 30, 25], [6, 25, 35], [7, 20, 40], ] for row in rows: ws.append(row) ch1 = ScatterChart() xvalues = Reference(ws, min_col=1, min_row=2, max_row=7) for i in range(2, 4): values = Reference(ws, min_col=i, min_row=1, max_row=7) series = Series(values, xvalues, title_from_data=True) ch1.series.append(series) ch1.title = "Default layout" ch1.style = 13 ch1.x_axis.title = 'Size' ch1.y_axis.title = 'Percentage' ch1.legend.position = 'r' ws.add_chart(ch1, "B10") from copy import deepcopy # Half-size chart, bottom right ch2 = deepcopy(ch1) ch2.title = "Manual chart layout" ch2.legend.position = "tr" ch2.layout=Layout( manualLayout=ManualLayout( x=0.25, y=0.25, h=0.5, w=0.5, ) ) ws.add_chart(ch2, "H10") # Half-size chart, centred ch3 = deepcopy(ch1) ch3.layout = Layout( ManualLayout( x=0.25, y=0.25, h=0.5, w=0.5, xMode="edge", yMode="edge", ) ) ch3.title = "Manual chart layout, edge mode" ws.add_chart(ch3, "B27") # Manually position the legend bottom left ch4 = deepcopy(ch1) ch4.title = "Manual legend layout" ch4.legend.layout = Layout( manualLayout=ManualLayout( yMode='edge', xMode='edge', x=0, y=0.9, h=0.1, w=0.5 ) ) ws.add_chart(ch4, "H27") wb.save("chart_layout.xlsx")
This produces four charts illustrating various possibilities: