[GRASS-user] Analyzing level ground

[Thomas Adams]

Hi Laurent,

I had previously started playing with Itzï but reported problems; now, it
seems to work to a point. I have followed your tutorial here:
https://www.itzi.org/user-manual/ but when I do this I get:

GRASS 7.0.3 (nc_spm_08_grass7):/media/teaiii/development/grass > itzi run
param.file.txt
ERROR: Unable to execute sql statement. There is no temporal database
connection defined for mapset <PERMANENT>
Traceback (most recent call last):
  File "/home/teaiii/.local/bin/itzi", line 11, in <module>
    sys.exit(main())
  File "/home/teaiii/.local/lib/python2.7/site-packages/itzi/itzi.py", line
40, in main
    args.func(args)
  File "/home/teaiii/.local/lib/python2.7/site-packages/itzi/itzi.py", line
93, in itzi_run
    sim_param=conf.sim_param)
  File
"/home/teaiii/.local/lib/python2.7/site-packages/itzi/simulation.py", line
75, in __init__
    self.gis.read(self.in_map_names)
  File "/home/teaiii/.local/lib/python2.7/site-packages/itzi/gis.py", line
189, in read
    elif self.name_is_stds(self.format_id(map_name)):
  File "/home/teaiii/.local/lib/python2.7/site-packages/itzi/gis.py", line
138, in name_is_stds
    if tgis.SpaceTimeRasterDataset(name).is_in_db():
  File
"/usr/local/grass-7.0.3/etc/python/grass/temporal/abstract_dataset.py",
line 370, in is_in_db
    return self.base.is_in_db(dbif)
  File "/usr/local/grass-7.0.3/etc/python/grass/temporal/base.py", line
314, in is_in_db
    dbif.execute(sql, mapset=self.mapset)
  File "/usr/local/grass-7.0.3/etc/python/grass/temporal/core.py", line
956, in execute
    "mapset <%(mapset)s>" % {"mapset": mapset}))
  File
"/usr/local/grass-7.0.3/etc/python/grass/pygrass/messages/__init__.py",
line 269, in fatal
    raise FatalError(message)
grass.exceptions.FatalError: Unable to execute sql statement. There is no
temporal database connection defined for mapset <PERMANENT>
[Raster MASK present]

I'm using GRASS 7.0.3 and Itzï 16.8

Any thoughts?

Regards,
Tom

On Thu, Sep 22, 2016 at 2:27 PM, Laurent C. <lrntct at gmail.com> wrote:

> Hello Rich,
>
> For the infiltration, if you can determine the soil texture, then you
> could estimate the Green-Ampt parameters using [1]
> What do you want to do in that area? Perform hydrological/overland
> flow analysis?
> If it is the case, you might give Itzï a try:
> https://www.itzi.org/
> Some of the parameters could be estimated (like friction coefficient).
>
> Regards,
> Laurent
>
> [1] Rawls, W., Brakensiek, D., and Miller, N. (1983). "Green‐ampt
> Infiltration Parameters from Soils Data." J. Hydraul. Eng.,
> 10.1061/(ASCE)0733-9429(1983)109:1(62), 62-70.
>
>
> 2016-09-22 13:09 GMT-05:00 Rich Shepard <rshepard at appl-ecosys.com>:
> >   The project area -- in farmland -- is small (< 20 ha) and  essentially
> > flat with elevation differences less than 1 meter. The LiDAR raster cells
> > (imported from ARC Grid format) have a cell size of 3x3 international
> feet;
> > elevation resolution is 0.013 feet.
> >
> >   While r.slope.aspect generates an aspect map, the slope map is blank.
> The
> > maps for dx, dy, and relief display variations.
> >
> >   While I have some soil data, it's sparse and I haven't (yet) found
> > infiltration rates; the rainfall data is very low and from a station
> several
> > miles away. I probably do not have all required input data for
> r.sim.water
> > or r.watershed.
> >
> >   Based on your much more extensive experiences applying GRASS to limited
> > areas please suggest approaches that might be appropriate for this
> project.
> > It might be that all I can do is create detailed contour maps of the area
> > and describe the situation qualitatively without robust quantitative
> > analyses.
> >
> > TIA,
> >
> > Rich
> >
> > _______________________________________________
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> > http://lists.osgeo.org/mailman/listinfo/grass-user
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-- 
Thomas E Adams, III
1724 Sage Lane
Blacksburg, VA 24060

1 (513) 739-9512 (cell)
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