[GRASS-dev] Re: [GRASS-user] Get current location projection in a Python Script

[Nikos Alexandris]

Nikos Alexandris wrote:
> > > > > > >>     rows = int(grass.region()['rows'])
> > > > > > >>     cols = int(grass.region()['cols'])
> > 
> > Is  python's "int()" truncating or rounding up values? The question came
> > to me while thinking of r.mapcalc's respective functions ( i.e. "int()
> > != round()" )

Glynn Clements wrote: 
> In this case, neither;

:D

> it's just converting strings to integers. The
> rows and cols values in the g.region output will always be integers.

Right... needles question (=I need to rest a bit).

> If you pass a floating-point value to int(), it will be truncated
> 
> (i.e. rounded towards zero):
> 	> int(1.9) 
> 	1 

> 	> int(-1.9) 
> 	-1
> 
> If you pass a string containing a decimal point to int(), it will 
> raise an exception:
> 	> int("1.9")
 
> 	Traceback (most recent call last):
> 	  File "<stdin>", line 1, in <module>
> 	ValueError: invalid literal for int() with base 10: '1.9'

Thanks for details, Nikos