ShapefileAttribute.ShapefileAttribute Constructors
Initializes a new instance of the ShapefileAttribute class.
Overload List
| Name | Description | |
|---|---|---|
| Public method | ShapefileAttribute(System.String name, System.Boolean defaultValue) | Initializes a new instance of the ShapefileAttribute class of type Bool, with the given attribute name and default value. |
| Public method | ShapefileAttribute(System.String name, System.Int64 defaultValue, System.Int32 recordLength) | Initializes a new instance of the ShapefileAttribute class of type Int, with the given attribute name, default value and record length. |
| Public method | ShapefileAttribute(System.String name, Atom defaultValue, System.Int32 recordLength) | Initializes a new instance of the ShapefileAttribute class of type Atom, with the given attribute name, default value and record length. |
| Public method | ShapefileAttribute(System.String name, System.String defaultValue, System.Int32 recordLength) | Initializes a new instance of the ShapefileAttribute class of type String, with the given attribute name, default value and record length. |
| Public method | ShapefileAttribute(System.String name, System.Double defaultValue, System.Int32 recordLength, System.Int32 precision) | Initializes a new instance of the ShapefileAttribute class of type Double, with the given attribute name, default value, record length and numeric precision. |
ShapefileAttribute(System.String name, System.Boolean defaultValue)
Initializes a new instance of the ShapefileAttribute class of type Bool, with the given attribute name and default value.Syntax
public ShapefileAttribute (
System.String name,
System.Boolean defaultValue
)Parameters
The name of the attribute.
The default value to write if a feature is missing the attribute.
Remarks
The name parameter should be possible to store in at most 10 bytes using the ShapefileSchema.CodePage. For details, see Name.
ShapefileAttribute(System.String name, System.Int64 defaultValue, System.Int32 recordLength)
Initializes a new instance of the ShapefileAttribute class of type Int, with the given attribute name, default value and record length.Syntax
public ShapefileAttribute (
System.String name,
System.Int64 defaultValue,
System.Int32 recordLength
)Parameters
The name of the attribute.
The default value to write if a feature is missing the attribute.
The length of the attribute value field, in bytes.
Remarks
The name parameter should be possible to store in at most 10 bytes using the ShapefileSchema.CodePage. For details, see Name.
If an actual field value does not fit into the specified record length when writing a feature to a Shapefile with ShapefileWriter.WriteFeature, the field will be left blank.
The DBF format stores numerical attributes as strings, so recordLength is the maximal number of characters (digits and a possible minus sign).
ShapefileAttribute(System.String name, Atom defaultValue, System.Int32 recordLength)
Initializes a new instance of the ShapefileAttribute class of type Atom, with the given attribute name, default value and record length.Syntax
public ShapefileAttribute (
System.String name,
Atom defaultValue,
System.Int32 recordLength
)Parameters
The name of the attribute.
The default value to write if a feature is missing the attribute.
The length of the attribute value field, in bytes.
Remarks
For an attribute of type Atom, the name parameter, when prefixed with a #, should be possible to store in at most 10 bytes using the ShapefileSchema.CodePage. For details, see Name.
If an actual field value does not fit into the specified record length when writing a feature to a Shapefile with ShapefileWriter.WriteFeature, the field value will be truncated.
ShapefileAttribute(System.String name, System.String defaultValue, System.Int32 recordLength)
Initializes a new instance of the ShapefileAttribute class of type String, with the given attribute name, default value and record length.Syntax
public ShapefileAttribute (
System.String name,
System.String defaultValue,
System.Int32 recordLength
)Parameters
The name of the attribute.
The default value to write if a feature is missing the attribute.
The length of the attribute value field, in bytes.
Remarks
The name parameter should not start with a # character, and should be possible to store in at most 10 bytes using the ShapefileSchema.CodePage. For details, see Name.
If an actual field value does not fit into the specified record length when writing a feature to a Shapefile with ShapefileWriter.WriteFeature, the field will be truncated.
ShapefileAttribute(System.String name, System.Double defaultValue, System.Int32 recordLength, System.Int32 precision)
Initializes a new instance of the ShapefileAttribute class of type Double, with the given attribute name, default value, record length and numeric precision.Syntax
public ShapefileAttribute (
System.String name,
System.Double defaultValue,
System.Int32 recordLength,
System.Int32 precision
)Parameters
The name of the attribute.
The default value to write if a feature is missing the attribute.
The length of the attribute value field, in bytes.
The number of decimals to use.
Remarks
The name parameter should be possible to store in at most 10 bytes using the ShapefileSchema.CodePage. For details, see Name.
If an actual field value does not fit into the specified record length when writing a feature to a Shapefile with ShapefileWriter.WriteFeature, the field will be left blank.
The DBF format stores Double attributes as strings, so recordLength is the maximal number of characters, which can be digits, a minus sign, and a decimal point. When writing, Carmenta will used the fixed-point notation determined by recordLength and precision, but when reading, the scientific E-notation can also be handled, for example 6.022e23.
Platforms
Windows, Linux, Android