ECAT and ECAT_STR - Ferret/PyFerret Documentation

ECAT and ECAT_STR

Appendix A

ECAT and ECAT_STR

ECAT (A, B )

Concatenates the values of two variables into one list on an abstract E axis.

Arguments:	A	variables to concatenate in E
	B
Result Axes:	X	Inherited from variables A and B
	Y	Inherited from variables A and B
	Z	Inherited from variables A and B
	T	Inherited from variables A and B
	E	Abstract, with length the sum of the length of the E axes of A and B
	F	Inherited from variables A and B

Note:
This is a grid-changing function. It is generally advisable to include explicit limits when working with functions that replace axes. for example, consider the function xcat(a,b). Look at the expressions

list/m=10:20 ecat(a,b)

and

list mcat(a[m=16:20],b[m=1:5])

Both will list 10 values in the E direction. The former will list the 10th through 20th data values indices from the entire M range of both variables. The latter will list all of the data that results from concatenating b[m=1:5] onto a[m=16:20].

ECAT_STR (sA, sB) concatenates string variables in the X direction. If ECAT is called with string arguments, Ferret runs ECAT_STR. The two arguments to ECAT must be of the same type.

yes? let a = esequence({"Q", "R", "S"})
yes? let b = esequence({"U", "V", "W"})
yes? list ecat(a,b)