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Table 1 Hierarchical Coordinate (HC) fields

From: openBEB: open biological experiment browser for correlative measurements

Parameter

Description

Rootflag

Boolean. True if this entity is the coordinate system root.

x, y, z

Cartesian. Internally the coordinates are stored as picometer (pm) values in a signed 64-bit integer. These coordinates are relative to the parent coordinates (i.e., for collections, the parent collection; for datasets, the containing collection).

Scale

Multiplication factor for Cartesian coordinates; for better readability, e.g., set the scale to 1000 if nanometer values should be displayed.

dx, dy, dz

Estimated standard error of Cartesian coordinates (in pm).

t

Time stamp in seconds since 1.1.1904 00:00:00 Universal Time ignoring leap seconds. The time stamp is represented in a 128-bit fixed-point number with a 64-bit radix. The first 64 bits are a signed integer for the seconds, the second 64 bits are unsigned fractions of a second.

dt

Estimated standard error of the time stamp (in fractional seconds).

Description

Description of the coordinate system (string); field to provide additional, ‘human readable’ information.

  1. Fields that are not applicable must be described as NaN (not a number). Error estimates can be provided for every parameter.