Graph

摘要

图表类有助于您创建不同类型的图表。而且，您可指定常规图表属性，例如标题、图表轴和图例信息。

讨论

可借助图表以直观易懂的方式呈现地图要素的相关信息以及它们之间的关系。也可以为非空间表格数据创建图表，并且可以通过图表显示地图中要素的附加信息或以另一种不同的方式显示这些信息。图表与地图是相辅相成的，因为图表简单、直观地传达了通常以数字形式汇总或从表格中发掘的信息。通过图表可以快速轻松地比较各要素，从而深入了解各要素之间的函数关系，由此以可视化方法显示其他方式难以呈现的数据分布、趋势和模式。

属性

属性	说明	数据类型
graphAxis (读写)	Sets the title of the axes (Left, Right, Bottom, and Top) of the graph. graphAxis property Description aType The type of graph property, which is applied to the graph irrespective of the number or type of series in the graph. The graphAxis property is a general graph property. Left Title of the left axis of the graph. For example, you can specify the title of the left axis by setting graphAxis[0] to "Left Axis". Right Title of the right axis of the graph. For example, you can specify the title of the right axis by setting graphAxis[1] to "Right Axis". Bottom Title of the bottom axis of the graph. For example, you can specify the title of the bottom axis by setting graphAxis[2] to "Bottom Axis". Top Title of the top axis of the graph. For example, you can specify the title of the top axis by setting graphAxis[3] to "Top Axis".	Object
graphPropsGeneral (读写)	Sets the general properties, such as the title, subtitle, and footer, of the graph. graphPropsGeneral property Description aType The type of graph property, which is applied to the graph irrespective of the number or type of series in the graph. The graphPropsGeneral property is a general graph property. footer Specify the text that appears in the footer of the graph. subtitle Specify the text that appears in the subtitle of the graph. title Specify the text that appears in the title of the graph.	Object
graphPropsLegend (读写)	Set the title of the legend in the graph. graphPropsLegend property Description aType The type of graph property, which is applied to the graph irrespective of the number or type of series in the graph. The graphPropsLegend property is a general graph property. title Specify the text that appears in the title of the legend in the graph.	Object
graphSeries (读写)	Get the graph series associated with the graph. When you have multiple series in a graph, you can get information about the individual series.	Object

方法概述

方法	说明
addSeriesAreaHorizontal (dataSrc, fieldX, {fieldY}, {fieldLabel}, {sortType})	创建可添加到图表的新“水平面积图”系列。 了解有关水平面积图表的详细信息
addSeriesAreaVertical (dataSrc, fieldY, {fieldX}, {fieldLabel}, {sortType})	创建可添加到图表的新“垂直面积图”系列。 了解有关垂直面积图表的详细信息
addSeriesBarHorizontal (dataSrc, fieldX, {fieldY}, {fieldLabel}, {sortType})	创建可添加到图表的新“水平条形图”系列。 了解有关水平条形图的详细信息
addSeriesBarMinMax (dataSrc, fieldYMax, fieldYMin, {fieldX}, {fieldLabel}, {sortType})	创建可添加到图表的新“条最小值和最大值图”系列。 了解有关条最小值和最大值图的详细信息
addSeriesBarVertical (dataSrc, fieldY, {fieldX}, {fieldLabel}, {sortType})	创建可添加到图表的新“垂直条形图”系列。 了解有关垂直条形图的详细信息
addSeriesBoxPlot (dataSrc, fieldValue)	创建可添加到图表的新“箱图”系列。 了解有关箱图的详细信息
addSeriesBubble (dataSrc, fieldRadius, fieldY, {fieldX}, {fieldLabel})	创建可添加到图表的新“气泡图”系列。 了解有关气泡图的详细信息
addSeriesHistogram (dataSrc, fieldValue, countBin)	创建可添加到图表的新“直方图”系列。 了解有关直方图的详细信息
addSeriesLineHorizontal (dataSrc, fieldX, {fieldY}, {fieldLabel}, {sortType})	创建可添加到图表的新“水平线图”系列。 了解有关水平线图的详细信息
addSeriesLineVertical (dataSrc, fieldY, {fieldX}, {fieldLabel}, {sortType})	创建可添加到图表的新“垂直线图”系列。 了解有关垂直线图的详细信息
addSeriesPie (dataSrc, fieldValue, fieldSort, {fieldLabel}, {sortType})	创建可添加到图表的新“饼图”系列。 了解有关饼图的详细信息
addSeriesPolar (dataSrc, fieldRadius, {fieldAngle}, {fieldLabel})	创建可添加到图表的新“极线图”系列。 了解有关极线图的详细信息
addSeriesScatterPlot (dataSrc, fieldY, {fieldX}, {fieldLabel})	创建可添加到图表的新“散点图”系列。 了解有关散点图的详细信息

方法

addSeriesAreaHorizontal (dataSrc, fieldX, {fieldY}, {fieldLabel}, {sortType})

参数	说明	数据类型
dataSrc	The layer or table containing the data values that will be used to create the graph.	Layer
fieldX	The attribute field that will be used to plot value along the X-axis of the Horizontal Area graph.	Field
fieldY	The attribute field that will be used to plot value along the Y-axis of the Horizontal Area graph.	Field
fieldLabel	The attribute field that will be used to plot labels for data points along the horizontal area in the graph.	Field
sortType	Specify how the data values in the attribute field used for defining the Y-axis will be sorted. VALUE —Sort the data values based on the order of values in the input layer or table. This is the default. ASC —Sort the data values in ascending order (lowest to highest). DESC —Sort the data values in descending order (highest to lowest).	String

addSeriesAreaVertical (dataSrc, fieldY, {fieldX}, {fieldLabel}, {sortType})

参数	说明	数据类型
dataSrc	The layer or table containing the data values that will be used to create the graph.	Layer
fieldY	The attribute field that will be used to plot value along the Y-axis of the Vertical Area graph.	Field
fieldX	The attribute field that will be used to plot value along the X-axis of the Vertical Area graph.	Field
fieldLabel	The attribute field that will be used to plot labels for data points along the vertical area in the graph.	Field
sortType	Specify how the data values in the attribute field used for defining the X-axis will be sorted. VALUE —Sort the data values based on the order of values in the input layer or table. This is the default. ASC —Sort the data values in ascending order (lowest to highest). DESC —Sort the data values in descending order (highest to lowest).	String

addSeriesBarHorizontal (dataSrc, fieldX, {fieldY}, {fieldLabel}, {sortType})

参数	说明	数据类型
dataSrc	The layer or table containing the data values that will be used to create the graph.	Layer
fieldX	The attribute field that will be used to plot value along the X-axis of the Horizontal Bar graph.	Field
fieldY	The attribute field that will be used to plot value along the Y-axis of the Horizontal Bar graph.	Field
fieldLabel	The attribute field that will be used to plot labels for data points along the horizontal bars in the graph.	Field
sortType	Specify how the data values in the attribute field used for defining the Y-axis will be sorted. VALUE —Sort the data values based on the order of values in the input layer or table. This is the default. ASC —Sort the data values in ascending order (lowest to highest). DESC —Sort the data values in descending order (highest to lowest).	String

addSeriesBarMinMax (dataSrc, fieldYMax, fieldYMin, {fieldX}, {fieldLabel}, {sortType})

参数	说明	数据类型
dataSrc	The layer or table containing the data values that will be used to create the graph.	Layer
fieldYMax	The attribute field that will be used to plot the maximum value along the Y-axis of the Bar Min and Max graph.	Field
fieldYMin	The attribute field that will be used to plot the minimum value along the Y-axis of the Bar Min and Max graph.	Field
fieldX	The attribute field that will be used to plot value along the X-axis of the Bar Min and Max graph.	Field
fieldLabel	The attribute field that will be used to plot labels for data points along the bars in the graph.	Field
sortType	Specify how the data values in the attribute field used for defining the X-axis will be sorted. VALUE —Sort the data values based on the order of values in the input layer or table. This is the default. ASC —Sort the data values in ascending order (lowest to highest). DESC —Sort the data values in descending order (highest to lowest).	String

addSeriesBarVertical (dataSrc, fieldY, {fieldX}, {fieldLabel}, {sortType})

参数	说明	数据类型
dataSrc	The layer or table containing the data values that will be used to create the graph.	Layer
fieldY	The attribute field that will be used to plot values along the Y-axis of the Vertical Bar graph.	Field
fieldX	The attribute field that will be used to plot values along the X-axis of the Vertical Bar graph.	Field
fieldLabel	The attribute field that will be used to plot labels for data points along the vertical bars in the graph.	Field
sortType	Specify how the data values in the attribute field used for defining the X-axis will be sorted. VALUE —Sort the data values based on the order of values in the input layer or table. This is the default. ASC —Sort the data values in ascending order (lowest to highest). DESC —Sort the data values in descending order (highest to lowest).	String

addSeriesBoxPlot (dataSrc, fieldValue)

参数	说明	数据类型
dataSrc	The layer or table containing the data values that will be used to create the graph.	Layer
fieldValue	The attribute field used for plotting the values in the Box Plot graph.	Field

addSeriesBubble (dataSrc, fieldRadius, fieldY, {fieldX}, {fieldLabel})

参数	说明	数据类型
dataSrc	The layer or table containing the data values that will be used to create the graph.	Layer
fieldRadius	The attribute field that defines the radius of the bubbles in the Bubble graph.	Field
fieldY	The attribute field that will be used to plot values along the Y-axis of the Bubble graph.	Field
fieldX	The attribute field that will be used to plot values along the X-axis of the Bubble graph.	Field
fieldLabel	The attribute field that will be used to plot labels for data points in the graph.	Field

addSeriesHistogram (dataSrc, fieldValue, countBin)

参数	说明	数据类型
dataSrc	The layer or table containing the data values that will be used to create the graph.	Layer
fieldValue	The attribute field used for displaying the frequency distribution in the bins of the histogram. The height of the bars in a Histogram represent a frequency count of the number of items falling into each bin.	Field
countBin	The number of bins in the histogram.	Integer

addSeriesLineHorizontal (dataSrc, fieldX, {fieldY}, {fieldLabel}, {sortType})

参数	说明	数据类型
dataSrc	The layer or table containing the data values that will be used to create the graph.	Layer
fieldX	The attribute field that will be used to plot value along the X-axis of the Horizontal Line graph.	Field
fieldY	The attribute field that will be used to plot value along the Y-axis of the Horizontal Line graph.	Field
fieldLabel	The attribute field that will be used to plot labels for data points along the horizontal line in the graph.	Field
sortType	Specify how the data values in the attribute field used for defining the Y-axis will be sorted. VALUE —Sort the data values based on the order of values in the input layer or table. This is the default. ASC —Sort the data values in ascending order (lowest to highest). DESC —Sort the data values in descending order (highest to lowest).	String

addSeriesLineVertical (dataSrc, fieldY, {fieldX}, {fieldLabel}, {sortType})

参数	说明	数据类型
dataSrc	The layer or table containing the data values that will be used to create the graph.	Layer
fieldY	The attribute field that will be used to plot value along the Y-axis of the Vertical Line graph.	Field
fieldX	The attribute field that will be used to plot value along the X-axis of the Vertical Line graph.	Field
fieldLabel	The attribute field that will be used to plot labels for data points along the vertical line in the graph.	Field
sortType	Specify how the data values in the attribute field used for defining the X-axis will be sorted. VALUE —Sort the data values based on the order of values in the input layer or table. This is the default. ASC —Sort the data values in ascending order (lowest to highest). DESC —Sort the data values in descending order (highest to lowest).	String

addSeriesPie (dataSrc, fieldValue, fieldSort, {fieldLabel}, {sortType})

参数	说明	数据类型
dataSrc	The layer or table containing the data values that will be used to create the graph.	Layer
fieldValue	The attribute field that will be used to plot values or wedges in the Pie graph.	Field
fieldSort	The attribute field that will be used to sort the wedges in an ascending or descending order.	Field
fieldLabel	The attribute field that will be used to plot labels in the Pie graph.	Field
sortType	Specify how the data values will be sorted in the attribute field used for sorting. ASC —Sort the data values in ascending order (lowest to highest). This is the default. DESC —Sort the data values in descending order (highest to lowest).	String

addSeriesPolar (dataSrc, fieldRadius, {fieldAngle}, {fieldLabel})

参数	说明	数据类型
dataSrc	The layer or table containing the data values that will be used to create the graph.	Layer
fieldRadius	The attribute field whose values are graphed on the radial axis of the Polar graph.	Field
fieldAngle	The attribute field that supplies the angular position for each data point in the Polar graph.	Field
fieldLabel	The attribute field that will be used to plot labels representing data values on the graph.	Field

addSeriesScatterPlot (dataSrc, fieldY, {fieldX}, {fieldLabel})

参数	说明	数据类型
dataSrc	The layer or table containing the data values that will be used to create the graph.	Layer
fieldY	The attribute field that will be used to plot values along the Y-axis of the Scatterplot graph.	Field
fieldX	The attribute field that will be used to plot values along the X-axis of the Scatterplot graph.	Field
fieldLabel	The attribute field that will be used to plot labels for data points in the graph.	Field

代码实例

图表示例

以下脚本创建了垂直条形图并将其保存为影像。

import arcpy

out_graph_name = "VerticalBarGraph"
out_graph_bmp = "c:/temp/VerticalBarGraph.bmp"
input_template = "c:/data/makegraph/VerticalBar.tee"
input_data = "c:/data/makegraph/Rainfall.gdb/Rainfall"

# Create the graph
graph = arcpy.Graph()

# Add a vertical bar series to the graph
graph.addSeriesBarVertical(input_data, "Rainfall_Stations_OBJECTID")

# Specify the title of the left axis
graph.graphAxis[0].title = "Rainfall"

# Specify the title of the bottom axis
graph.graphAxis[2].title = "Days"

# Specify the title of the Graph
graph.graphPropsGeneral.title = "Amount of Rainfall"

# Output a graph, which is created in-memory
arcpy.MakeGraph_management(input_template, graph, out_graph_name)

# Save the graph as an image
arcpy.SaveGraph_management(out_graph_name, out_graph_bmp,
                           "MAINTAIN_ASPECT_RATIO", 600, 375)

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