Re: [GRASS-user] Matching Histograms for Aerial Photography?

2017-06-20 Thread Jeshua Lacock
Sorry for the duplicate; I posted the other message after waiting over 6 hours for this message to post (which ultimately took about 24 hours). ___ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user

Re: [GRASS-user] Filling sinks w/ minimum slope

2017-06-20 Thread Ken Mankoff
On 2017-06-20 at 08:45, Markus Metz wrote: > Negative values in the drainage direction should only occur at the > borders of the current region and around NULL cells. Note that if you > want internal sinks to be drained, you must not use the depression > option. I

Re: [GRASS-user] Matching Histograms for Aerial Photography?

2017-06-20 Thread Moritz Lennert
On 20/06/17 11:06, Jeshua Lacock wrote: Greetings, I am struggling to match histograms for various US states NAIP 1-meter aerial photography. It appears that each state shown here has been equalized for each individual state except for Nevada and Arizona. I have tried using r.rescale.eq with

Re: [GRASS-user] Filling sinks w/ minimum slope

2017-06-20 Thread Stefan Blumentrath
Hi Ken, To my knowledge r.watershed does not require to fill sinks in advance, because it has a minimal impact routing for handling (non-real) sinks. Do you have a particular reason for your wish to fill the DEM in advance? Cheers Stefan -Original Message- From: grass-user

Re: [GRASS-user] Filling sinks w/ minimum slope

2017-06-20 Thread Ken Mankoff
On 2017-06-20 at 06:28, Markus Metz wrote: > You don't need to fill sinks with r.watershed, internal sinks are by > default drained. I have negative values in the drainage direction raster produced by r.watershed in the interior. Is this a bug? Or am I

Re: [GRASS-user] Filling sinks w/ minimum slope

2017-06-20 Thread Markus Metz
On Mon, Jun 19, 2017 at 10:35 PM, Ken Mankoff wrote: > > > On 2017-06-19 at 18:20, Stefan Blumentrath wrote: > > To my knowledge r.watershed does not require to fill sinks in advance, > > because it has a minimal impact routing for handling