ImportCSV()

Argument

Contents

filename

The path and file name of the file to import

new_db_name

The path and file name of the new geographic file

layer_type

The type of features to import: Point, Line, or Area

Option

Type

Contents

Direction

Integer

The field position of the link direction (only when importing a line layer); defaults to no direction information present

Geography

Integer

The field position for the start of the geographic information; i.e., (lon, lat) for point layers and (np, lon1, lat1, _) for line and area layers (defaults to 1 for point and line layers and 3 for area layers, or immediately past the last defined ID field)

ID

Integer

The field position of the item ID(s) (defaults to 1 for area or line layers and no ID present for other layers)

Label

String

A descriptive label for the geographic file

Layer Name

String

The name of the layer in the geographic file

Median Split

Boolean

If "True" special handling insures that entities which cross the 180 degree longitude line are imported properly; if "False" (the default), no special handling is invoked

NAD Conversion

3 strings

Input datum, output datum, and conversion file (if needed); the input and output datums should be different

Node ID

Integer

The field position of the start node ID; the end node ID must immediately follow (only when importing a line layer) (defaults to no node IDs present)

Node Layer Name

String

The desired name for the endpoint layer (only when importing a line layer)

Optimize

Boolean

Whether to optimize the geographic file automatically after the import (defaults to "True")

Projection

String, array

The projection name and the array of options

Transform

Array

Array indicating the transformation to apply to coordinates in the file. This can have three forms:

1. An array of two or more four-element arrays containing local and world coordinates for control points, for example, {{real localX1, real localY1, real longitude1, real latitude1}, ...}

2. An array of four elements - {real X_multiplier, real Y_multiplier, real X_offset, real Y_offset}

3. Center and Extent transform {c1_x, c1_y, width_1, c2_x, c2_y, width_2}where center is shifted from (c1_x,c1_y) to (c2_x,c2_y), and vector of length width_1 out of c_1 becomes a vector of length width_2 out of c_2.

Error Type

Meaning

NotFound

There is no file by this name

Error

The file is not a valid Caliper text geography file

Escape

The user clicked Cancel

Function

Summary

ExportCSV()

Exports features in a geographic file to a Caliper text geography file