date:20180322

[GRASS-dev] GSOC 2018 Proposal

2018-03-22 Thread Sanjeet

Hi,

This is my GSOC proposal for the idea: 'Full support of Python 3 in
GRASS GIS'. Please suggest any improvements, or share any other
feedback.

https://docs.google.com/document/d/18kD6I7adTKmtXpGOKr4A8hf1pBcf0LNU7jiiRoi9wJ8

Thanks
-- 
Sanjeet Bhatti
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[GRASS-dev] Python Unit-test On "r.basins.fill"

2018-03-22 Thread Sunveer Singh

Hello all,

Luca, I am so sorry, for the very very big delay was having my finals, and
today I finally completed writing test on r.basins.fill.

All, I am Sunveer Singh, 15 years old from India, Google Code-in 2017
Winner with OSGeo, I completed 16 tasks for GRASS GIS, within Google
Code-in, and contributed *test for r.info , i.vi
, v.extract, v.univar, v.select, r.report, r.texture,
v.vect.stats, r.recode, r.in.ascii and r.to.vect.* And created a video on

*How to create a location: Link to Video.
*
Due to my finals, I was unable to contribute to GRASS, but know I will
start Contributing again.

I have attached my test written in python for r.basins.fill. If any
improvement is needed in the test, please let me know.

Thank You for Your Precious Time.


Thank You
Sunveer
https://sunveersingh.github.io/
"""
Name:   r.basins.fill
Purpose:Tests r.basins.fill and its flags/options.
	
Author: Sunveer Singh
Copyright:  (C) 2017 by Sunveer Singh and the GRASS Development Team
Licence:This program is free software under the GNU General Public
	License (>=v2). Read the file COPYING that comes with GRASS
	for details.
"""
from grass.gunittest.case import TestCase

extract="""2  summit
3  ridge
4  shoulder
"""


class TestRasterbasin(TestCase):
cnetwork='elevation'
tnetwork='facility'
output='basinsoutput'
input="basin_50K"

@classmethod
def setUpClass(cls):
seed = 500
cls.use_temp_region()
cls.runModule('g.region', raster=cls.tnetwork, flags='p')
cls.runModule('r.watershed', elevation='elevation', stream=cls.cnetwork, threshold='5', overwrite=True)
cls.runModule('r.geomorphon', elevation=cls.cnetwork, forms=cls.tnetwork, overwrite=True)
cls.runModule('r.mapcalc', seed=seed, expression='rand_cell = rand(1, 200)', overwrite=True)
cls.runModule('r.thin', input=cls.input, output=cls.output)


@classmethod
def tearDownClass(cls):
cls.del_temp_region()

def tearDown(cls):
cls.runModule('g.remove', flags='f', type='raster', name=cls.output)

def test_no1(self):
lakes='lakes'
self.assertModule('r.basins.fill', cnetwork=self.cnetwork, tnetwork=self.tnetwork, output=self.output, number='1', overwrite=True)
self.assertRasterMinMax(map=lakes, refmin=34300, refmax=43600,
	msg="lakes in degrees must be between 34300 and 43600")

def test_no2(self):
soilsID='soilsID'
self.assertModule('r.basins.fill', cnetwork=self.cnetwork, tnetwork=self.tnetwork, output=self.output, number='3')
self.assertRasterMinMax(map=soilsID, refmin=18683, refmax=46555,
	msg="soilsID in degrees must be between 18683 and 46555")

def test_no3(self):
roadsmajor='roadsmajor'
self.assertModule('r.basins.fill', cnetwork=self.cnetwork, tnetwork=self.tnetwork, output=self.output, number='4')
self.assertRasterMinMax(map=roadsmajor, refmin=1, refmax=1,
	msg="roadsmajor in degrees must be between 1 and 1")

def test_no4(self):
slope='slope'
self.assertModule('r.basins.fill', cnetwork=self.cnetwork, tnetwork=self.tnetwork, output=self.output, number='5')
self.assertRasterMinMax(map=slope, refmin=0, refmax=38.68939,
	msg="slope in degrees must be between 0 and 38.68939")

if __name__ == '__main__':
from grass.gunittest.main import test
test()
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Re: [GRASS-dev] [GRASS GIS] #3211: Pygrass crash when trying to drop DB table

2018-03-22 Thread GRASS GIS

#3211: Pygrass crash when trying to drop DB table
--+-
  Reporter:  lrntct   |  Owner:  grass-dev@…
  Type:  defect   | Status:  new
  Priority:  normal   |  Milestone:  7.2.3
 Component:  PyGRASS  |Version:  svn-releasebranch72
Resolution:   |   Keywords:
   CPU:  x86-64   |   Platform:  Linux
--+-

Comment (by lucadelu):

 I tested the example and it is quite strange because inside the pyGRASS
 code is returning error, but if I run the problematic command just after
 there is no error...


 {{{
 ## -- End pasted text --
 WARNING: Vector map  already exists and will be
  overwritten
 > /home/lucadelu/compilati/grass_trunk/dist.x86_64-pc-linux-
 gnu/etc/python/grass/script/vector.py(49)vector_db()
 -> s = read_command('v.db.connect', quiet=True, flags='g', map=map,
 sep=';',
 (Pdb) c
 WARNING: Coor file of vector map  is larger than it
  should be (18 bytes excess)
 Building topology for vector map ...
 Registering primitives...
 ---
 CalledModuleError Traceback (most recent call
 last)
  in ()
  12   table=vect_map.name + 'junc', key='cat')
  13 t_junc = l_junc.table()
 ---> 14 t_junc.create(cols_j, overwrite=True)

 /home/lucadelu/compilati/grass_trunk/dist.x86_64-pc-linux-
 gnu/etc/python/grass/pygrass/vector/table.pyc in create(self, cols, name,
 overwrite, cursor)
1162 except OperationalError:  # OperationalError
1163 if overwrite:
 -> 1164 self.drop(force=True)
1165 cur.execute(sql.CREATE_TAB.format(tname=newname,
1166   coldef=coldef))

 /home/lucadelu/compilati/grass_trunk/dist.x86_64-pc-linux-
 gnu/etc/python/grass/pygrass/vector/table.pyc in drop(self, cursor, force)
1029 cur = cursor if cursor else self.conn.cursor()
1030 if self.exist(cursor=cur):
 -> 1031 used = db_table_in_vector(self.name)
1032 if used is not None and len(used) > 0 and not force:
1033 print(_("Deleting table <%s> which is attached"

 /home/lucadelu/compilati/grass_trunk/dist.x86_64-pc-linux-
 gnu/etc/python/grass/script/db.pyc in db_table_in_vector(table, mapset)
 192 vects = list_strings('vect', mapset=mapset)
 193 for vect in vects:
 --> 194 for f in vector_db(vect, stderr=nuldev).values():
 195 if not f:
 196 continue

 /home/lucadelu/compilati/grass_trunk/dist.x86_64-pc-linux-
 gnu/etc/python/grass/script/vector.pyc in vector_db(map, **args)
  47 """
  48 import pdb; pdb.set_trace()
 ---> 49 s = read_command('v.db.connect', quiet=True, flags='g',
 map=map, sep=';',
  50  **args)
  51 pdb.set_trace()

 /home/lucadelu/compilati/grass_trunk/dist.x86_64-pc-linux-
 gnu/etc/python/grass/script/core.pyc in read_command(*args, **kwargs)
 474 if _capture_stderr and returncode:
 475 sys.stderr.write(stderr)
 --> 476 return handle_errors(returncode, stdout, args, kwargs)
 477
 478

 /home/lucadelu/compilati/grass_trunk/dist.x86_64-pc-linux-
 gnu/etc/python/grass/script/core.pyc in handle_errors(returncode, result,
 args, kwargs)
 330 args = make_command(*args, **kwargs)
 331 raise CalledModuleError(module=None, code=repr(args),
 --> 332 returncode=returncode)
 333
 334 def start_command(prog, flags=b"", overwrite=False, quiet=False,

 CalledModuleError: Module run None ['v.db.connect', '--q', '-g',
 'map=drop_table_test@user1', 'sep=;'] ended with error
 Process ended with non-zero return code 1. See errors in the (error)
 output.

 In [2]: from grass.script import read_command

 In [3]: s = read_command('v.db.connect', quiet=True, flags='g',
 map='drop_table_test@
...: user1', sep=';')
 WARNING: Coor file of vector map  is larger than it
  should be (18 bytes excess)

 In [4]: s
 Out[4]:
 
'1/drop_table_test;drop_table_test;cat;/home/lucadelu/grassdata/nc_spm_08_grass7/user1/sqlite/sqlite.db;sqlite\n'
 }}}

-- 
Ticket URL: 
GRASS GIS 

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Re: [GRASS-dev] [GRASS GIS] #774: i.rgb.his, i.his.rgb, d.his support for >8 bit

2018-03-22 Thread GRASS GIS

Comment (by Nikos Alexandris):

A `gunittest` is available at:

https://github.com/NikosAlexandris/test_color_space_conversions/blob/master/test_color_space_roundtrips.py

The tests compare the input R, G and B images (Landsat imagery from the
`nc_spm_08_grass7` test data set) from 6- up to 16-bit (by rescaling the
original inputs) with the output R, G and B after a roundtrip from RGB to
HIS and back to RGB color spaces.

They confirm, as far as I understand, that the suggested modules

* https://trac.osgeo.org/grass/browser/sandbox/alexandris/i.rgb.his/
* https://trac.osgeo.org/grass/browser/sandbox/alexandris/i.his.rgb/

work with precision levels 0.1 and 0.01. Setting the precision to 0.001,
will cause the the test fail for `bits=` >= 15.

HIS values are also tested for being inside the expected ranges.

A review of the script would be much appreciated in order to confirm its
functionality.

Some points:

* The script tests both the `i.rgb.his` and `i.his.rgb` modules. So, where
should it be placed?

* `r.rescale` smartly picks up the max value among any two values given in
the `to=` parameter. This is a bit confusing and the tests will fail for
bitnesses < 6. I think it is meaningful to test for bitnesses all the way
down to 2-bit images.

* Currently, the test counts 4 tests. Maybe it would make more sense to
count as many as the different precision levels requested, and in addition
as many as the different bitnesses tested.

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