For information on the parameters in this dialog that are specific to all formats, seeAbout Reader Feature Types: User Attributes
Schema specifies the name, type, and width of the fields that comprise a row.
名字是任何有效的属性名称。ca类型n be any of the field types described in the table below. The width is a positive value that is the length of the field in characters.
Fields containing x, y, or z coordinates will comprise the point geometry of the feature, while fields with the typeinteger,real, orstringwill be attributes. The typeignoreindicates the field will be skipped.
The ordering of the fields is important. The first field always starts at the first character in a row and is width characters wide. Subsequent fields start where the previous field ends.
| Field Type | Description |
|---|---|
| integer | Integer fields store integer values. |
| real | Real fields store single and double precision floating point values. |
| string | String fields store fixed-length strings. When a character field is read, any padding blanks will be stripped from the string. |
| x-coordinate | X-Coordinate fields store the x coordinate of the feature as a floating point value. It is interpreted in the same way as arealfield. |
| y-coordinate | Y-Coordinate fields store the y coordinate of the feature as a floating point value. It is interpreted in the same way as arealfield. |
| z-coordinate | Z-Coordinate fields store the z coordinate of the feature as a floating point value. It is interpreted in the same way as arealfield. |
| ignore | Fields marked asignoreare not stored and are not part of the feature. |