| 标注 | 说明 | 数据类型 |
Input Features
| The input point feature layer. | Feature Layer |
Output Feature Class
| The output feature class containing the drive time polygons. | Feature Class |
Threshold Variable
| The selected Business Analyst dataset variable to which the threshold value will be applied. Threshold variables must be numeric. No other statistic type is supported. | String |
Threshold Values
| The threshold variable value that will determine the size of the output rings. The rings will expand until they contain the threshold value of the selected variable. | Double |
Distance Type
| The method of travel that will be used to create the output polygons. | String |
Distance Units
(可选) | The distance units that will be used with the threshold values. | String |
ID Field
(可选) | The ID that uniquely identifies each input point and is included in the output as an attribute. | Field |
Travel Direction
(可选) | Specifies the direction of travel that will be used for output polygon creation.
| String |
Time of Day
(可选) | The time and date that will be used when calculating distance. | Date |
Time Zone
(可选) | Specifies the time zone that will be used for the Time of Day parameter.
| String |
Search Tolerance
(可选) | The maximum distance that input points can be from the network. The default value is 5,000 meters. | Linear Unit |
Polygon Detail
(可选) | Specifies the level of detail that will be used for the output drive time polygons.
| String |
Iterations Limit
(可选) | Restricts the number of drive times that can be used to find the optimal threshold limit. | Long |
Minimum Step
(可选) | The minimum distance between one threshold area candidate and the next as the model approaches the threshold value to prevent infinite iterations. | Double |
Threshold Percent Difference
(可选) | The maximum percentage difference between the target value and threshold value that will be used when determining the threshold drive time, for example, 5 percent. The default value is 5. | Double |
Input Method
(可选) | Specifies the type of value that will be used for each drive time.
| String |
Expression
(可选) | A fields-based expression that will be used to calculate drive time. | SQL Expression |
获得 Business Analyst 许可后可用。
摘要
Creates a feature class of network distance trade areas that expand around point features until criteria is reached.
使用情况
The size of output polygons is determined by the Threshold Values parameter value provided for a selected Threshold Variable parameter value from the Business Analyst dataset.
The Threshold Variable parameter accepts only variables of Count type. Median, Average, Percent, or Index cannot be used.
Multiple threshold drive time polygons can be created around each input by typing individual values into separate threshold value text boxes.
The ID Field parameter uniquely identifies the point location around which threshold drive time polygons will be created.
参数
arcpy.ba.GenerateThresholdDriveTimeTradeArea(in_features, out_feature_class, threshold_variable, threshold_values, distance_type, {units}, {id_field}, {travel_direction}, {time_of_day}, {time_zone}, {search_tolerance}, {polygon_detail}, {iterations_limit}, {minimum_step}, {target_percent_diff}, {input_method}, {expression})| 名称 | 说明 | 数据类型 |
in_features | The input point feature layer. | Feature Layer |
out_feature_class | The output feature class containing the drive time polygons. | Feature Class |
threshold_variable | The selected Business Analyst dataset variable to which the threshold value will be applied. Threshold variables must be numeric. No other statistic type is supported. | String |
threshold_values [threshold_values,...] | The threshold variable value that will determine the size of the output rings. The rings will expand until they contain the threshold value of the selected variable. | Double |
distance_type | The method of travel that will be used to create the output polygons. | String |
units (可选) | The distance units that will be used with the threshold values. | String |
id_field (可选) | The ID that uniquely identifies each input point and is included in the output as an attribute. | Field |
travel_direction (可选) | Specifies the direction of travel that will be used for output polygon creation.
| String |
time_of_day (可选) | The time and date that will be used when calculating distance. | Date |
time_zone (可选) | Specifies the time zone that will be used for the Time of Day parameter.
| String |
search_tolerance (可选) | The maximum distance that input points can be from the network. The default value is 5,000 meters. | Linear Unit |
polygon_detail (可选) | Specifies the level of detail that will be used for the output drive time polygons.
| String |
iterations_limit (可选) | Restricts the number of drive times that can be used to find the optimal threshold limit. | Long |
minimum_step (可选) | The minimum distance between one threshold area candidate and the next as the model approaches the threshold value to prevent infinite iterations. | Double |
target_percent_diff (可选) | The maximum percentage difference between the target value and threshold value that will be used when determining the threshold drive time, for example, 5 percent. The default value is 5. | Double |
input_method (可选) | Specifies the type of value that will be used for each drive time.
| String |
expression (可选) | A fields-based expression that will be used to calculate drive time. | SQL Expression |
代码示例
The following Python window script demonstrates how to use the GenerateThresholdDriveTimeTradeArea function.
import arcpy
arcpy.ba.GenerateThresholdDriveTimeTradeArea("SF_Custs",r"C:\ Project1\Project1.gdb\SF_Custs_GenerateThresholdDriveTimeTradeArea","populationtotals.totpop_cy",[25000, 50000], "Driving Time","MINUTES", "CUST_ID", None,"TOWARD_STORES", None,"TIME_ZONE_AT_LOCATION", None,"STANDARD", 10, None, 5, Values, None)许可信息
- Basic: 需要 Business Analyst
- Standard: 需要 Business Analyst
- Advanced: 需要 Business Analyst