![]() ![]() Set a numpts parameter for each section (the parameter indicates the number of nodes in the section), followed by the x / y coordinate pair of each node. If the polyline has more than one section, the MULTIPLE keyword should be included, followed by the number of sections. U A polyline object consists of one or more sections. If no pen type is specified, the current pen type is used. As an option, you can specify the pen type. U A line object requires four parameters one X coordinate and one Y coordinate for each endpoint. If the SYMBOL clause is omitted, the current symbol is used. As an option, a symbol (symbol) representing this point can be set. U A point (point) object requires two parameters: an X coordinate and a Y coordinate. The graphic objects that can be specified are: If a specific line in the MID file does not have a corresponding graphic object, you must write a "blank" object (NONE) in the corresponding position in the MIF file to retain the position. The first object in the MIF file is associated with the first line in the MID file, and the second object in the MIF file is associated with the second line in the MID file. MapInfo matches the entries in the MIF and MID files with each other. The data section of the MIF file can have any number of initial graphics values, and each initial value represents a graphic object. The data section of the MIF file follows the file header and must be introduced by DATA on a separate line: L decimal (width, number of decimal places) ![]() L smallint (2 bytes, so only numbers from -32767 to +32767 can be stored) Then create a row for each column, which contains the column name, column type, and for character columns and decimal columns, it also contains a number indicating the width of the field. (Some of the parameter settings are more complicated) All coordinates are saved with values relative to the northeast quadrant. ![]() When the COORDSYS clause is not specified, the data is assumed to be stored in the form of longitude / latitude. V The CoordSys (coordinate system) clause specifies the COORDSYS clause to indicate that the data is not stored in latitude / longitude. Each number represents a column in the database the columns in the INDEX list will have an index for them in the appendix. V Index (index) to indicate that the column in the table has an index, you can introduce a number (or a series of numbers separated by commas) in the Index clause. This number indicates a column of the database By default, the delimiter is the TAB key if the default value is used, no DELIMITER line is required. V Delimiter specifies the delimiter in quotation marks. V The Charset clause specifies the character set used when creating text in the table. The v Version clause indicates whether you are using VERSION 1, VERSION 2, VERSION 300, or VERSION 450 format. This is a description of the MIF file header, with optional information in square brackets. Information about how to create a MapInfo table is saved in the file header the graphic object definition is saved in the data section. The MIF file has two areas-the file header area and the data section. Text data is delimited data, one record per line and carriage return between lines, or carriage return plus line feed, or line feed. MapInfo data is in two files-graphics are saved in. ![]()
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