point function

geometric-functions point function

The point function is depreciated and will be phased out. Use the point_xy or point_yx functions in stead.

syntax

• point(column, row, pointunit)

definition

point(column, row, pointunit) results in a two-dimensional point data-item.

The coordinates are derived from the one-dimensional column and row data items.

The third argument is the resulting point values-unit.

description

The default order of column, row can be overruled in the config.ini with the rule:

ConfigPointColRow=1

If this setting is configured, the order in all point functions of the configuration becomes row, column. This row, column order is more common in graphs and geographic coordinate systems.

applies to

• column and row data items with (u)int16, (u)int32, float32 or float64 value-type
• pointunit with wpoint, spoint, upoint, ipoint, fpoint or dpoint value type

conditions

1. The value type of the column and row data items must match with each other and with the pointunit:
   • uint16 data items for wpoint units;
   • int16 data items for spoint units;
   • uint32 data items for upoint units;
   • int32 data items for ipoint units;
   • float32 data items for fpoint units;
   • float64 data items for dpoint units.
2. The domain units of the column, row and resulting data items must match.

since version

5.15

example

attribute<fpoint> pointXY (ADomain) := point(Ycoord, Xcoord, fpoint);

ADomain, nr of rows = 5