7.25.12. grn_geo¶
7.25.12.1. Summary¶
TODO…
7.25.12.2. Example¶
TODO…
7.25.12.3. Reference¶
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grn_geo_point¶
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grn_rc grn_geo_select_in_rectangle(grn_ctx *ctx, grn_obj *index, grn_obj *top_left_point, grn_obj *bottom_right_point, grn_obj *res, grn_operator op)¶
- It selects records that are in the rectangle specified by top_left_point parameter and bottom_right_point parameter. Records are searched by index parameter. Found records are added to res parameter table with op parameter operation. - Parameters
- index – the index column for TokyoGeoPoint or WGS84GeoPpoint type. 
- top_left_point – the top left point of the target rectangle. (ShortText, Text, LongText, TokyoGeoPoint or WGS84GeoPoint) 
- bottom_right_point – the bottom right point of the target rectangle. (ShortText, Text, LongText, TokyoGeoPoint or WGS84GeoPoint) 
- res – the table to store found record IDs. It must be - GRN_TABLE_HASH_KEYtype table.
- op – the operator for matched records. 
 
 
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int grn_geo_estimate_in_rectangle(grn_ctx *ctx, grn_obj *index, grn_obj *top_left_point, grn_obj *bottom_right_point)¶
- It estimates number of records in the rectangle specified by top_left_point parameter and bottom_right_point parameter. Number of records is estimated by index parameter. If an error is occurred, -1 is returned. - Parameters
- index – the index column for TokyoGeoPoint or WGS84GeoPpoint type. 
- top_left_point – the top left point of the target rectangle. (ShortText, Text, LongText, TokyoGeoPoint or WGS84GeoPoint) 
- bottom_right_point – the bottom right point of the target rectangle. (ShortText, Text, LongText, TokyoGeoPoint or WGS84GeoPoint) 
 
 
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grn_obj *grn_geo_cursor_open_in_rectangle(grn_ctx *ctx, grn_obj *index, grn_obj *top_left_point, grn_obj *bottom_right_point, int offset, int limit)¶
- It opens a cursor to get records in the rectangle specified by top_left_point parameter and bottom_right_point parameter. - Parameters
- index – the index column for TokyoGeoPoint or WGS84GeoPpoint type. 
- top_left_point – the top left point of the target rectangle. (ShortText, Text, LongText, TokyoGeoPoint or WGS84GeoPoint) 
- bottom_right_point – the bottom right point of the target rectangle. (ShortText, Text, LongText, TokyoGeoPoint or WGS84GeoPoint) 
- offset – the cursor returns records from offset parameter position. offset parameter is based on 0. 
- limit – the cursor returns at most limit parameter records. -1 means no limit.