B.2.1.8 Coordinates

coordwrite	Create a coordinate array node
	`coord-id:I=`coordwrite`(base-id:I,zone-id:I,data-type:S,node-name:S,data-array:A)`
	$\rightarrow$ data-type:DataType
ncoords	Count coordinates nodes in the zone
	`number-of-coords:I=`ncoords`(base-id:I,zone-id:I)`
	$\rightarrow$ See 'nzones' remarks.
coordinfo	Get infos about a given coordinate
	`(data-type:S,node-name:S)=`coordinfo`(base-id:I,zone-id:I,coord-id:I)`
	$\rightarrow$ See 'coordwrite' remarks.
coordread	Read the coordinate array
	`coord-array:A=`coordread`(base-id:I,zone-id:I,coord-name:S,read-mode:I)`
	$\rightarrow$ The returned array is a 'pyArray' containing the data with therequired format. Unfair-remark: a zone name is required, but allrequests to nodes are done using integer ids.The read mode is default to 0, that is a C-like read (i,j,k).The mode=1 is fortran like read (k,j,i).Please, take care of the dimensions in that case, see the 'zoneread' remarks.