Map and Table Calculation

MAXCRDY( ) function

Returns the maximum Y-coordinate of a map.

Syntax

MAXCRDY(Map)

Input

Output

Notes:

• By default, this function works on raster maps with extension .mpr; you can omit the extension .mpr. To use this function on polygon maps, segment maps or point maps, you need to specify the object's extension (.mpa, .mps or .mpp).
• This function results in a coordinate value that can be used as input in other calculations.

Tips:

• This function may be handy to use in DDE applications.
• When the definition symbol = is used, a dependent output map or dependent output column is created; when the assignment symbol := is used, the dependency link is immediately broken after the output map/column has been calculated.

Usable in

Simple calculators, MapCalc, TabCalc

Examples

Pocket line calculator examples:

Example of calculating with minimum and maximum values of coordinates

It might occur that you have a point data set from which only a part of all points lay inside a certain area. You can select only these points to show or to use them for further calculation. In this example, it will be tested whether the points of a point map lay within the area of an existing land use map. The coordinates from the lower left corner of the Landuse map are: (795480, 8071880) and the coordinates from the upper right corner: (808220, 8090520).

Select = INRANGE(CRDX(Coordinate), MINCRDX(Landuse), MAXCRDX(Landuse)) AND INRANGE(CRDY(Coordinate), MINCRDY(Landuse), MAXCRDY(Landuse))

Points 3, 4 and 7 do not lie inside the boundaries of the land use map. The X-coordinate of point number 3 is lower than the minimum X-coordinate of the Landuse map while point numbers 4 and 7 have Y-coordinates which are larger than the maximum Y-coordinate in the Landuse map.

See also: