Hi Ivan,

fixed in CVS.

спасибо, Martin

2007/11/24, Ivan Shmakov <ivan@theory.asu.ru>:

>>>>> Martin Landa <landa.martin@gmail.com> writes:

[...]

>> I would like to import points data in GRASS (with v.in.ascii). My

>> data includes number written with the scientific notation (for

>> example 1.2e+23). During the import, I am defining them as double.

>> Unfortunately, it doesn't work...>> I get the following message :

>> " ERROR: Column 9 defined as double has string values ">> Can GRASS actualy deal with number written with scientific notation ?

>> Is there a specific way to deal with these numbers ?> no, it seems, v.in.ascii doesn't support it...

It seems that it's the is_double () function which behaves in a

wrong way:$ nl -ba grass-6.3.cvs_src_snapshot_2007_11_03/vector/v.in.ascii/points.c

...

30 /* Determine if the string is double, e.g. 123.456, +123.456, -123.456

31 * return 1 if double, 0 otherwise */

32 static int is_double(char *str)

33 {

34 int i = -1, ndots = 0;

35

36 while (str[++i] != '\0') {

37 if (i == 0 && (str[i] == '+' || str[i] == '-'))

38 continue;

39

40 if (str[i] == '.') {

41 if (ndots > 0)

42 return 0; /* > 1 dot */

43

44 ndots++;

45 continue;

46 }

47

48 if (!isdigit(str[i]))

49 return 0;

50 }

51

52 return 1;

53 }

...

$IIUC, the number is to be converted from its string

representation by atof () later. Since, I assume, atof ()

supports e-notation, there's no necessity in such a strict check

like is_double () currently performs. Therefore, I suggest

is_double () to be reimplemented on top of strtod () instead,

e. g.:static int

is_double (char *s)

{

char *tail;if (strtod (s, &tail),

tail == s || *tail != '\0') {

/* doesn't look like a number,

or has extra characters after what looks to be a number */

return 0;

}return 1;

}BTW, is_int () could be rewritten as well.

--

Martin Landa <landa.martin@gmail.com> * http://gama.fsv.cvut.cz/~landa *