Q: How can I use the computed field and shadow study information from TAP 4 in other programs, such as MapInfo.
A: The computed results for propagation studies (including shadowing, field strength values, and coverage contours) are contained in a "results" data base (RDB) for each TAP 4 task.
The RDB files are in the FoxPro and dBase (.dbf) file format. For example, the RDB for TAP task #1 would be R0000001.DBF, etc. Any software that can read .dbf files can use the TAP 4 RDB files by selecting the desired fields from the records in the file.
The fields in each record of the RDB file are listed below:
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rdb_lat | Latitude of point (N is positive) | Double | 17.12 | |
rdb_lon | Longitude of point (E is positive) | Double | 17.12 | |
rdb_az | Azimuth of point from transmitter site | Double | 17.12 | |
rdb_dis | Distance of point from transmitter site in kilometers | Double | 10.4 | |
rdb_val | Value of the point (see note below) | Double | 8.2 | |
rdb_desc | Descriptive information about the point (see note below) | String | 20 | |
The "value" field takes on different significance for the various types of studies which use the RDB:
The "description" field has several uses.
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