3D Analyst Tools ArcToolbox

Add Field to Analysis Layer, Add Locations Tools

Add Field to Analysis Layer

How to use Add Field to Analysis Layer Tool in Arc Toolbox ArcMap ArcGIS??

Add Field to Analysis Layer Tool

Path to access the tool

:

Add Field to Analysis Layer Tool, Analysis Toolset, Network Analyst Tools Toolbox

 

Add Field to Analysis Layer

Adds a field to a sublayer of a network analysis layer.

1. Input Network Analysis Layer

The network analysis layer to which the new field will be added.

2. Sub Layer

The sublayer of the network analysis layer to which the new field will be added.

3. Field Name

The name of the field that will be added to the specified sublayer of the network analysis layer.

4. Field Type

The field type used in the creation of the new field.

· LONG— Whole numbers between -2,147,483,648 and 2,147,483,647.

· TEXT—Any string of characters.

· FLOAT— Fractional numbers between -3.4E38 and 1.2E38.

· DOUBLE— Fractional numbers between -2.2E308 and 1.8E308.

· SHORT— Whole numbers between -32,768 and 32,767.

· DATE—Date and/or time.

· BLOB—Long sequence of binary numbers. You need a custom loader or viewer or a third-party application to load items into a BLOB field or view the contents of a BLOB field.

5. Field Precision (optional)

·         The number of digits that can be stored in the field. All digits are counted no matter what side of the decimal they are on.

·         The parameter value is only valid for numeric field types.

6. Field Scale (optional)

The number of decimal places stored in a field. This parameter is only used in float and double data field types.

7. Field Length (optional)

The length of the field being added. This sets the maximum number of allowable characters for each record of the field. This option is only applicable on fields of type text.

8. Field Alias (optional)

The alternate name given to the field name. This name is used to give more descriptive names to cryptic field names. The field alias parameter only applies to geodatabases.

9. Field IsNullable (optional)

Specifies whether the field can contain null values. Null values are different from zero or empty fields and are only supported for fields in a geodatabase.

· Checked—The field will allow null values. This is the default.

· Unchecked—The field will not allow null values.

Add Locations

How to use Add Locations Tool in Arc Toolbox ArcMap ArcGIS??

Add Locations Tool

Path to access the tool

:

Add Locations Tool, Analysis Toolset, Network Analyst Tools Toolbox

 

Add Locations

Adds network analysis objects to a network analysis layer. The objects are added to specific sublayers such as Stops and Barriers. Objects are input as features or records.

1.    Input Network Analysis Layer

The network analysis layer to which the network analysis objects will be added.

2.    Sub Layer

The sublayer of the network analysis layer to which the network analysis objects will be added.

3.    Input Locations

The feature class or table that will be the source for the new network analysis objects.

4.    Field Mappings

Sets the values for the properties of the network analysis objects. Properties can be set to a constant or mapped to a field from the input feature class or table.

If both the Field and Default values are not specified for a property, the resulting network analysis objects will have null values for that property.

If the data you are loading contains network locations or location ranges based on the network dataset used for the analysis, check the Use Network Location fields instead of geometry parameter. Adding the network analysis objects using the network location fields is quicker than loading by geometry.

5.    Search Tolerance

The search tolerance for locating the input features on the network. Features that are outside the search tolerance are left unlocated. The parameter includes a value and units for the tolerance.

6.    Sort Field (optional)

The field on which the network analysis objects are sorted as they are added to the network analysis layer. The default is the ObjectID field on the input feature class or the table.

7.    Search Criteria (optional)

Specifies which sources in the network dataset will be searched when finding locations and what portions of geometry (also known as snap types) will be used.

When adding line or polygon network locations, only the SHAPE snap type is used, even if other snap types are specified.

The default value is SHAPE for all network sources except system junctions, which has a default of NONE.

8.    Find Closest among All Classes (optional)

Specifies how the network locations will be matched.

· Checked—Matches the new network locations to the closest network source among all the sources that have a snap type specified in the search criteria. This is the default.

· Unchecked—Matches the new network locations to the first network source having a snap type specified in the search criteria. The sources are searched in the priority order, and the searching stops when the location is found within the search tolerance.

9.    Append to Existing Locations (optional)

Specifies whether to append new network analysis objects to existing objects.

· Checked—The new network analysis objects will be appended to the existing set of objects in the selected sublayer. This is the default.

· Unchecked—The existing network analysis objects will be deleted and replaced with the new objects.

10. Snap to Network (optional)

Specifies whether to snap the network locations along the network dataset or at some specified offset from the network dataset.

· Checked—If there are point features, the points will be snapped to the network, and you cannot use the curb approach. This is useful if you need to know how a vehicle approaches a stop. If your input features are lines or polygons, check this option.

· Unchecked—The geometries of the network locations are based on the geometries of the input features. This is useful if you want to use the curb approach, which requires that the network locations identify which side of the edge they are on. This is the default.

11. Snap Offset (optional)

When snapping a point to the network, you can apply an offset distance. An offset distance of zero means the point will be coincident with the network feature (typically, a line). To offset the point from the network feature, enter an offset distance. The offset is in relation to the original point location; that is, if the original point was on the left side, its new location will be offset to the left. If it was originally on the right side, its new location will be offset to the right.

The default is 5 meters. However, this parameter is ignored if Snap to Network is unchecked.

12. Exclude Restricted Portions of the Network (optional)

Specifies whether restricted network elements will be excluded.

· Checked—The network locations will only be placed on traversable portions of the network. This prevents placing network locations on elements that you can't reach due to restrictions or barriers. Before adding network locations using this option, ensure that you added all the restriction barriers to the input network analysis layer to get expected results. This option is not applicable when adding barrier objects. This is the default.

· Unchecked—The network locations will be placed on all the elements of the network. The network locations that are added with this option may be unreachable during the solve process if they are placed on restricted elements.

13. Search Query (optional)

·         A query that will restrict the search to a subset of the features within a source feature class. This is useful if you don't want to find features that may be unsuited for a network location. For example, if you are loading centroids of polygons and don't want to locate on local roads, you can define a query that searches for major roads only.

·         An SQL expression for a given source is specified by selecting the source name in the Name column and clicking the SQL button. If you don't want to specify a query for a source, remove the SQL expression for that source by selecting the source name and clicking the Remove button.

·         By default, no query is used.