Yes -
`var,return=dtype`
will return FLOAT or CHAR. Putting it into a symbol would likely give you the most flexibility to make use of it.
On 12/8/2013 8:54 PM, Akshay Hegde wrote:
Hi Developers,
Is there any function to check an array class ?
for example character classes defined by the POSIX standard
[[:alpha:]] --------> alphabetic characters
[[:alnum:]] -------> alphanumeric characters
[[:digit:]] ------> Numeric characters
[akshay@aix tmp]$ f
NOAA/PMEL TMAP
FERRET v6.85
Linux 2.6.18-371.1.2.el5 64-bit - 11/12/13
9-Dec-13 09:58
! Numbers
yes? let numerics = {1,2,3,4,5}
! Alpha
yes? let strings = {"1","2","3","4","5"}
yes? list numerics,strings
X: 0.5 to 5.5
Column 1: NUMERICS is {1,2,3,4,5}
Column 2: STRINGS is {"1","2","3","4","5"}
NUMERICS STRINGS
1 / 1: 1.000 "1"
2 / 2: 2.000 "2"
3 / 3: 3.000 "3"
4 / 4: 4.000 "4"
5 / 5: 5.000 "5"
yes? list/file=tester.nc/format=cdf/clobber numerics,strings
LISTing to file tester.nc
yes? can var/all
yes? use tester.nc
yes? sh d
currently SET data sets:
1> ./tester.nc (default)
name title I J K L M N
NUMERICS {1,2,3,4,5} 1:5 ... ... ... ... ...
STRINGS {"1","2","3","4","5"} 1:5 ... ... ... ... ...
yes? list numerics,strings
DATA SET: ./tester.nc
X: 0.5 to 5.5
Column 1: NUMERICS is {1,2,3,4,5}
Column 2: STRINGS is {"1","2","3","4","5"}
NUMERICS STRINGS
1 / 1: 1.000 "1"
2 / 2: 2.000 "2"
3 / 3: 3.000 "3"
4 / 4: 4.000 "4"
5 / 5: 5.000 "5"
yes? list ..varnames
VARIABLE : ..VARNAMES
FILENAME : tester.nc
SUBSET : 2 points (X)
1 / 1:"NUMERICS"
2 / 2:"STRINGS"
Here I want to create one array say let mask that should contain 0 if ..varnames is numeric class and 1 if its string class (alphanumeric)
I am interested to know how ferret checks internally whether an array is of string class or numeric class ? while displaying this error message "string/numeric data type mix-up"
yes? let myvar = ..varnames
yes? list myvar
VARIABLE : ..VARNAMES
FILENAME : tester.nc
SUBSET : 2 points (X)
1 / 1:"NUMERICS"
2 / 2:"STRINGS"
I need to create mask, so that if I list myvar and mask, I should get following result
Expected result :list myvar,myvar
DATA SET: ./tester.nc
Column 1: MYVAR is ..VARNAMES
Column 2: mask is some expre
MYVAR mask
1 / 1: "NUMERICS" 0
2 / 2: "STRINGS" 1
Thanks and Regards,
Akshay Hegde
CSIR-National Institute of Oceanography,
Dona Paula, Panjim, Goa -403004