POLYLINE_RAILWAY_01

1/ Regarding railway line names:

Mainly in JR, what is generally used as a line name is the operation system name. This name is different from the line name of the railway data published in the National Land Numerical Information, which requires careful consideration when being deployed. For example, the Yamanote line in fact includes 30 stations forming a ring shape such as Tokyo station and Shinbashi station, however only stations from Shinagawa to Tabata are registered. Other stations are registered in other lines, for instance Kanda station in Chuo line, Akihabara station in Soubu line, Ueno station in Touhoku line, etc., which is difficult to understand for normal users.

Therefore, Prepper Open Data Bank (hereinafter referred to as PODB) has prepared two datasets, one that retains the route name (POLYLINE_RAILWAY_01) and one without the route name (POLYLINE_RAILWAY_02). We hope users may have the freedom to choose either dataset which fits their own needs.

When deploying both station and railway section data, please use either of the following combinations:

“POINT_STATION_01” and “POLYLINE_RAILWAY_01”

or

“POINT_STATION_02” and “POLYLINE_RAILWAY_02”.

２/ Regarding railway class

“RAILWAY_CLASS” is excluded from the railway section data because there are cases where “RAILWAY_CLASS” is different for some stations. For example, since the Chuo line of the Osaka City Metro includes both tracks (軌道) and ordinary railway tracks (普通鉄道) in ” POINT_STATION_01″ but only ordinary tracks (普通軌道) in the railway section data, using RAILWAY_CLASS in this case may cause inconsistencies.