3D polyline files

A 3D polyline file contains the definitions of all 3D points that make up all of the 3D polylines in a 3D polyline group. These files have an .epl extension and may be referred to as "EPL files".

Each line contains the definition of a single 3D point which consists of the following fields, separated by commas:

Field

Units

Description

Date

yyyy-mm-dd

The date the 3D point. See note below.

Time

hh:mm:ss

The time the 3D point. See note below.

Milliseconds

milliseconds

Millisecond part of the  time 3D point. See note below.

Latitude

degrees

Latitude of the 3D point.

Longitude

degrees

Longitude of the 3D point.

Depth

meters

Depth of the 3D point.

Intensity

-

A value associated with each 3D point which you can use to represent a measure of your choice. Aside from location and time each 3D point has this one value in which to store such a measure. It can be used to color the 3D point in a scene, and is visible on the General page of the 3D Object Properties dialog box.

Segment number

-

(optional) A number which groups 3D points into a 3D polyline. Each file can contain any number of 3D polylines, each uniquely identified by the Segment number. Together they form a 3D polyline group.

Note: With each 3D polyline the Segment number must increase.

Note: In an EPL file, the time fields as a block are optional for 3D polylines. In the file, either all the 3D polylines have values for the time fields or alternatively all the 3D polylines have no time values.

Example file

 1999-05-14, 23:09:59, 0, 42.50142478, 14.50023414, 100, -100, 0
1999-05-14, 23:10:00, 0, 42.50151478, 14.50023423, 120, -80, 0
1999-05-14, 23:10:01, 0, 42.50160478, 14.50023459, 140, -60, 0
1999-05-14, 23:10:02, 0, 42.50169478, 14.50023543, 160, -40, 0
1999-05-14, 23:10:03, 0, 42.50178478, 14.50023684, 180, -20, 1
1999-05-14, 23:10:04, 0, 42.50187478, 14.50023909, 200, 0, 1
1999-05-14, 23:10:05, 0, 42.50196478, 14.50024233, 220, 20, 1
1999-05-14, 23:10:06, 0, 42.50205478, 14.50024674, 240, 40, 1
1999-05-14, 23:10:07, 0, 42.50214478, 14.50025252, 260, 60, 1
1999-05-14, 23:10:08, 0, 42.50223478, 14.50025979, 280, 80, 4
1999-05-14, 23:10:09, 0, 42.50232478, 14.50026879, 300, 100, 4
1999-05-14, 23:10:10, 0, 42.50241478, 14.50027968, 320, 120, 4
1999-05-14, 23:10:11, 0, 42.50250478, 14.50029264, 340, 140, 4
1999-05-14, 23:10:12, 0, 42.50259478, 14.50030785, 360, 160, 4
1999-05-14, 23:10:13, 0, 42.50268478, 14.50032549, 380, 180, 4

See also

About 3D polylines
Importing 3D polylines
Viewing 3D Object properties