Graph (arcpy)
Récapitulatif
The Graph class helps you in creating graphs of different types. Also, you can specify general graph properties such as the title, graph axes, and legend information.
Discussion
Graphs assist you in presenting information about map features and the relationship between them in a visual, easy-to-understand manner. Graphs may also be created for nonspatial tabular data and can show both additional information about the features on the map or the same information in a different way. Graphs are complementary to maps in that they simply and visually convey information that would generally be summarized numerically or explored from tables. With a graph, it is easy to quickly compare features to gain insight into the functional relationship between the features and thereby visualize the distribution, trends, and patterns in the data that would otherwise be difficult to see.
Propriétés
| Propriété | Explication | Type de données | ||||||||||||
| graphAxis (Lecture/écriture) |
Sets the title of the axes (Left, Right, Bottom, and Top) of the graph.
| Object | ||||||||||||
| graphPropsGeneral (Lecture/écriture) |
Sets the general properties, such as the title, subtitle, and footer, of the graph.
| Object | ||||||||||||
| graphPropsLegend (Lecture/écriture) |
Set the title of the legend in the graph.
| Object | ||||||||||||
| graphSeries (Lecture/écriture) |
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 |
Vue d'ensemble des méthodes
| Méthode | Explication |
| addSeriesAreaHorizontal (dataSrc, fieldX, {fieldY}, {fieldLabel}, {sortType}) |
Creates a new Horizontal Area series that can be added to the graph. |
| addSeriesAreaVertical (dataSrc, fieldY, {fieldX}, {fieldLabel}, {sortType}) |
Creates a new Vertical Area series that can be added to the graph. |
| addSeriesBarHorizontal (dataSrc, fieldX, {fieldY}, {fieldLabel}, {sortType}) |
Creates a new Horizontal Bar series that can be added to the graph. |
| addSeriesBarMinMax (dataSrc, fieldYMax, fieldYMin, {fieldX}, {fieldLabel}, {sortType}) |
Creates a new Bar Min and Max series that can be added to the graph. |
| addSeriesBarVertical (dataSrc, fieldY, {fieldX}, {fieldLabel}, {sortType}) |
Creates a new Vertical Bar series that can be added to the graph. |
| addSeriesBoxPlot (dataSrc, fieldValue) |
Creates a new Box Plot series that can be added to the graph. |
| addSeriesBubble (dataSrc, fieldRadius, fieldY, {fieldX}, {fieldLabel}) |
Creates a new Bubble series that can be added to the graph. |
| addSeriesHistogram (dataSrc, fieldValue, countBin) |
Creates a new Histogram series that can be added to the graph. |
| addSeriesLineHorizontal (dataSrc, fieldX, {fieldY}, {fieldLabel}, {sortType}) |
Creates a new Horizontal Line series that can be added to the graph. |
| addSeriesLineVertical (dataSrc, fieldY, {fieldX}, {fieldLabel}, {sortType}) |
Creates a new Vertical Line series that can be added to the graph. |
| addSeriesPie (dataSrc, fieldValue, fieldSort, {fieldLabel}, {sortType}) |
Creates a new Pie series that can be added to the graph. |
| addSeriesPolar (dataSrc, fieldRadius, {fieldAngle}, {fieldLabel}) |
Creates a new Polar series that can be added to the graph. |
| addSeriesScatterPlot (dataSrc, fieldY, {fieldX}, {fieldLabel}) |
Creates a new Scatterplot series that can be added to the graph. |
Méthodes
| Paramètre | Explication | Type de données |
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.
| String |
| Paramètre | Explication | Type de données |
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.
| String |
| Paramètre | Explication | Type de données |
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.
| String |
| Paramètre | Explication | Type de données |
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.
| String |
| Paramètre | Explication | Type de données |
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.
| String |
| Paramètre | Explication | Type de données |
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 |
| Paramètre | Explication | Type de données |
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 |
| Paramètre | Explication | Type de données |
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.
| String |
| Paramètre | Explication | Type de données |
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.
| String |
| Paramètre | Explication | Type de données |
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.
| String |
| Paramètre | Explication | Type de données |
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 |
| Paramètre | Explication | Type de données |
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 |
Exemple de code
The following script creates a Vertical Bar graph and saves it as an image.
import arcpy
# Set local variables:
output_graph_name = "VerticalBarGraph"
verticalBarGraph_bmp = "C:/temp/VerticalBarGraph.bmp"
inputTemplate = "C:/Data/makegraph/VerticalBar.tee"
inputData = "C:/Data/makegraph/Rainfall.gdb/Rainfall"
# Create the graph
graph = arcpy.Graph()
# Add a vertical bar series to the graph
graph.addSeriesBarVertical(inputData, "Rainfall_Stations_OBJECTID")
# Specify the title of the left axis
graph.graphAxis[0] = "Rainfall"
# Specify the title of the bottom axis
graph.graphAxis[2] = "Days"
# Specify the title of the Graph
graph.graphPropsGeneral.title = "Amount of Rainfall"
# Output a graph, which is created in-memory
arcpy.MakeGraph_management(inputTemplate, graph, output_graph_name)
# Save the graph as an image
arcpy.SaveGraph_management(output_graph_name, verticalBarGraph_bmp, "MAINTAIN_ASPECT_RATIO", "600", "375")