Hi grass-users,
Is there a convenient way to find the location of the minimum value in a
raster, either as x,y coordinates or as a binary raster (1 = minimum, 0
= other)? I've looked, but haven't found anything obvious.
Regards,
Josh.
___
Joshua wrote:
Is there a convenient way to find the location of the
minimum value in a raster, either as x,y coordinates or as a
binary raster (1 = minimum, 0 = other)? I've looked, but
haven't found anything obvious.
two steps,
eval `r.info -r data_map` to get min=
r.mapcalc binary_map =
Hi,
2011/8/3 Hamish hamis...@yahoo.com:
Joshua wrote:
[snip]
two steps,
eval `r.info -r data_map` to get min=
r.mapcalc binary_map = if(data_map == $min, 1, 0)
or perhaps min from 'r.info -r' and coord(s) from grep'ing
output of 'r.stats -1g'.
perhaps you need to do abs(data_map - $min)
First make a 2nd copy of your raster
r.info to get the value of minimum.
r.null to null out all the values more than minValue + 0.01 (depends on
the decimal values in your raster) through to maxValue.
Cheers
Saber
Hi,
2011/8/3 Hamish hamis...@yahoo.com:
Joshua wrote:
[snip]
two steps,
Thanks everyone for the quick responses. I've managed to get what I needed.
I've been trying to improve upon the stochastic modelling of watershed
boundaries, as described in the r.stream.basins manual and Metz and
Jasiewicz (2011, p. 1167). Instead of using an area as the catchment
outlet, I
