Re: stringtofloat

Yongzhou,

As Dave pointed out, it is better you use double to represent the date.

Or you can use NCL's newly added data type: int64, or uint64.

For example, you may have:

s = "20080901000000"
i64 = toint64(s)
ui64 = touint64(s)
d = todouble(s)

print(i64)
print(ui64)
print(d)

will give you:

Variable: i64
Type: int64
Total Size: 8 bytes
             1 values
Number of Dimensions: 1
Dimensions and sizes: [1]
Coordinates:
(0) 20080901000000

Variable: ui64
Type: uint64
Total Size: 8 bytes
             1 values
Number of Dimensions: 1
Dimensions and sizes: [1]
Coordinates:
(0) 20080901000000

Variable: d
Type: double
Total Size: 8 bytes
             1 values
Number of Dimensions: 1
Dimensions and sizes: [1]
Coordinates:
(0) 20080901000000

You may also noticed there are new convert functions as well.

Hope this help,

Wei Huang
huangwei@ucar.edu
VETS/CISL
National Center for Atmospheric Research
P.O. Box 3000 (1850 Table Mesa Dr.)
Boulder, CO 80307-3000 USA
(303) 497-8924

On Jun 9, 2010, at 5:41 PM, Li, Yongzuo wrote:

> Hi,
>
> I have a script to test stringtofloat
>
> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
>
> begin
>
> s = "2008090100"
> f = stringtofloat(s)
> i = stringtoint(s)
>
> print("string= "+s)
> print("float= "+f)
> print("int= "+i)
>
> end
>
> The output for float is wrong
>
> (0) string= 2008090100
> (0) float= 2.00809e+09
> (0) int= 2008090100
>
> Yongzuo
>
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Received on Wed Jun 9 21:39:49 2010