Hi all,
I’m using GRASS 7.8 on WIndows 10, and trying out some of the Landsat routines.
I’m getting an error on pan sharpening, at the very end of the processing: and i see some temp files have been created. is there a way to fix this? Thanks, Vishal
Vishal K. Mehta, PhD
Sr. Scientist
Stockholm Environment Institute - US
133 D St Suite F
Davis CA 95616
www.sei-us.org
Hi Vishal,
On Wed, Feb 23, 2022 at 8:22 PM Vishal Mehta <vishalm1975@gmail.com> wrote:
Hi all,
I'm using GRASS 7.8 on WIndows 10, and trying out some of the Landsat routines.
Which version do you precisely use?
g.version -rge
Is it 7.8.6 or older?
Markus
PS: Just a few minutes ago I released 7.8.7 
https://github.com/OSGeo/grass/releases/tag/7.8.7
(Windows and other binaries aren't ready yet)
I'm getting an error on pan sharpening, at the very end of the processing: and i see some temp files have been created. is there a way to fix this? Thanks, Vishal
---
Wed Feb 23 11:14:22 2022)
i.pansharpen red=Refl_3@PERMANENT green=Refl_2@PERMANENT blue=Refl_1@PERMANENT pan=LC08_L1TP_044033_20180225_20180308_01_T1_B8@PERMANENT output=brovey_pansharpen method=brovey bitdepth=8
Using 8bit image channels
Performing pan sharpening with hi res pan image: 15.000000
Pan channel/intensity histogram matching using linear regression
Histogram matching...
Traceback (most recent call last):
File "C:\PROGRA~1\QGIS3~1.10\apps\grass\grass78/scripts/i.
pansharpen.py", line 632, in <module>
main()
File "C:\PROGRA~1\QGIS3~1.10\apps\grass\grass78/scripts/i.
pansharpen.py", line 257, in main
brovey(pan, ms1, ms2, ms3, out, pid, sproc)
File "C:\PROGRA~1\QGIS3~1.10\apps\grass\grass78/scripts/i.
pansharpen.py", line 315, in brovey
panmatch1 = matchhist(pan, ms1, outname)
File "C:\PROGRA~1\QGIS3~1.10\apps\grass\grass78/scripts/i.
pansharpen.py", line 552, in matchhist
stats = stats_out.communicate()[0].split('\n')[:-1]
TypeError: a bytes-like object is required, not 'str'
(Wed Feb 23 11:14:31 2022) Command finished (9 sec)
...
Thanks Markus,
It’s 7.8.2
g.version -rge
version=7.8.2
date=2019
revision=3900fb114
build_date=2019-12-11
build_platform=x86_64-w64-mingw32
build_off_t_size=8
libgis_revision=00000
libgis_date=“?”
proj=6.2.1
gdal=3.0.2
geos=3.8.0
sqlite=3.29.0
I did see your email recently about 7.8.7…
I could just try version 8?
-V
Vishal K. Mehta, PhD
Sr. Scientist
Stockholm Environment Institute - US
133 D St Suite F
Davis CA 95616
www.sei-us.org
Hi Vishal,
On Wed, Feb 23, 2022 at 9:04 PM Vishal Mehta <vishalm1975@gmail.com> wrote:
Thanks Markus,
It's 7.8.2
g.version -rge
version=7.8.2
date=2019
.. your installation is a few years old - please consider updating to
7.8.6 or even 8.0.x.
I did see your email recently about 7.8.7..
I could just try version 8?
Sure, that would be best.
BTW: For the QGIS integration of GRASS GIS 8.0:
QGIS has been updated in master (QGIS 3.24) and everything backported
to QGIS 3.22 LTR.
Cheers,
Markus
Thanks Markus,
I’ll just do a fresh install of Grass 8 and try it out,
Best,
Vishal
Vishal K. Mehta, PhD
Sr. Scientist
Stockholm Environment Institute - US
133 D St Suite F
Davis CA 95616
www.sei-us.org
HI Markus, all,
I installed Grass 8.0.0 and tried the pansharpening step. ALthough there are no errors, the resulting pansharpened rasters all have zero values.
I basically followed the steps here
https://courses.neteler.org/processing-landsat8-data-in-grass-gis-7/#Unpacking_the_downloaded_Landsat_8_dataset
Essentially, after downloading the Landsat 8 OLI scene:
This is the Grass version i’m trying now:
Vishal K. Mehta, PhD
Sr. Scientist
Stockholm Environment Institute - US
133 D St Suite F
Davis CA 95616
www.sei-us.org