The final point written does not match any input data – it is a generated point that only preserves the property of being either inside or outside the polygon. If the feature has no known coordinate system, it is written to a BRD file. If the feature has a known coordinate system, it will be projected to LL84 and written to a B84 file. Any other attributes present will be lost.
Every feature that passes to the writer must have a polygon geometry and one Boolean attribute called point_is_within_border. Writer OverviewįME writes one feature to one dataset, so five features will be written to five separate BRD files. The feature will always have polygon geometry. Reader OverviewįME considers one BRD file to be one feature. HYPACK software uses the polygon and the point in conjunction for data filtering purposes inside their software suite. The B84 format is similar to the BRD format in structure, but the coordinates in a B84 file are in the LL84 coordinate system. The last line in a HYPACK BRD file represents the x and y components of a point either inside or outside the polygon.įME also supports reading from and writing to the B84 format. Note that the first and second to last line must be identical. For example:Ī BRD file can contain an arbitrary amount of lines.Įvery line except for the last represents the x and y components of a point on a polygon. Each line in a BRD file has exactly two numbers, separated by a single space. HYPACK BRD is a text-based format containing only real numbers.
OverviewĪ HYPACK BRD file contains XY positions thatĭefine an area. The HYPACK ® Border Reader and Writer allows FME to read and write HYPACK BRD and B84 files. Licensing options for this format begin with FME Professional Edition.
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