def run_trails(real_elev, scanned_elev, eventHandler, env, **kwargs):
resulting = "trails2_slopedir"
before = 'scan_saved'
#env_crop = get_environment(raster=real_elev, n='n-100', s='s+100', e='e-100', w='w+100')
analyses.change_detection(before=before,
after=scanned_elev,
change='change',
height_threshold=[60, 335],
cells_threshold=[3, 100],
add=True,
max_detected=10,
debug=True,
env=env)
points = {}
# start and end
data = gscript.read_command('v.out.ascii',
input='trails2_points',
type='point',
format='point',
env=env).strip()
c1, c2 = data.splitlines()
c1 = c1.split('|')
c2 = c2.split('|')
points[0] = (float(c1[0]), float(c1[1]))
points[1] = (float(c2[0]), float(c2[1]))
# detected points
points_raw = gscript.read_command('v.out.ascii',
input='change',
type='point',
format='point').strip().split()
i = 2
for point in points_raw:
point = point.split('|')
point = (float(point[0]), float(point[1]))
points[i] = point
i += 1
length = len(points)
if length == 2:
gscript.mapcalc("{} = null()".format(resulting), env=env)
event = updateProfile(points=[])
eventHandler.postEvent(receiver=eventHandler.activities_panel,
event=event)
return
# distance matrix
D = []
for i in range(length):
D.append([0] * length)
for p1 in range(0, length - 1):
for p2 in range(p1 + 1, length):
d = dist(points, p1, p2)
D[p1][p2] = d
D[p2][p1] = d
# 0 distance for start and end to make sure it's always connected
D[0][1] = 0
D[1][0] = 0
# solve
solution = solve_tsp_numpy(D, optim_steps=10)
# rearange solutions to start in start point
ind1 = solution.index(0)
ind2 = solution.index(1)
if ind2 > ind1:
solution = solution[::-1]
ind = solution.index(0)
solution = solution[ind:] + solution[:ind]
# export line
profile_points = []
line = 'L {} 1\n'.format(len(solution))
for i in solution:
line += '{} {}\n'.format(points[i][0], points[i][1])
profile_points.append(points[i])
line += '1 1'
gscript.write_command('v.in.ascii',
input='-',
stdin=line,
output='line',
format='standard',
flags='n',
env=env)
env2 = get_environment(raster=before)
# slope along line
gscript.run_command('v.to.rast',
input='line',
type='line',
output='line_dir',
use='dir',
env=env2)
gscript.run_command('r.slope.aspect',
elevation=before,
slope='saved_slope',
aspect='saved_aspect',
env=env2)
gscript.mapcalc(
"slope_dir = abs(atan(tan({slope}) * cos({aspect} - {line_dir})))".
format(slope='saved_slope', aspect='saved_aspect',
line_dir='line_dir'),
env=env2)
# set new color table
colors = [
'0 green', '7 green', '7 yellow', '15 yellow', '15 red', '90 red'
]
gscript.write_command('r.colors',
map='slope_dir',
rules='-',
stdin='\n'.join(colors),
env=env2)
# increase thickness
gscript.run_command('r.grow',
input='slope_dir',
radius=2.1,
output=resulting,
env=env2)
# update profile
event = updateProfile(points=profile_points)
eventHandler.postEvent(receiver=eventHandler.activities_panel, event=event)
# copy results
postfix = datetime.now().strftime('%H_%M_%S')
prefix = 'trails2'
gscript.run_command(
'g.copy',
raster=['slope_dir', '{}_slope_dir_{}'.format(prefix, postfix)],
vector=['line', '{}_line_{}'.format(prefix, postfix)],
env=env)
def run_trails(real_elev, scanned_elev, blender_path, eventHandler, env,
**kwargs):
resulting = "trail"
trail = "trail"
before = "scan_saved"
# trim the edges to avoid noise being detected as markers
info = gs.raster_info("scan")
edge = (info["north"] - info["south"]) / 20
env2 = get_environment(
raster=scanned_elev,
n="n-{}".format(edge),
s="s+{}".format(edge),
e="e-{}".format(edge),
w="w+{}".format(edge),
)
analyses.change_detection(
before=before,
after=scanned_elev,
change="change",
height_threshold=[min_threshold, max_threshold],
cells_threshold=[10, 100],
add=True,
max_detected=max_number_of_markers,
debug=True,
env=env2,
)
points = {}
# if we have 'trail_points' vector, use this:
# data = gs.read_command('v.out.ascii', input='trail_points', type='point', format='point', env=env).strip()
# c1, c2 = data.splitlines()
# c1 = c1.split('|')
# c2 = c2.split('|')
# points[0] = (float(c1[0]), float(c1[1]))
# points[1] = (float(c2[0]), float(c2[1]))
# otherwise we will generate them on the fly:
points[0], points[1] = create_end_points(env)
gs.run_command("v.edit", tool="create", map=trail, env=env)
# detected points
points_raw = (gs.read_command("v.out.ascii",
input="change",
type="point",
format="point").strip().split())
i = 2
for point in points_raw:
point = point.split("|")
point = (float(point[0]), float(point[1]))
points[i] = point
i += 1
length = len(points)
if length == 2:
gs.mapcalc("{} = null()".format(resulting), env=env)
event = updateProfile(points=[])
eventHandler.postEvent(receiver=eventHandler.activities_panel,
event=event)
return
# distance matrix
D = []
for i in range(length):
D.append([0] * length)
for p1 in range(0, length - 1):
for p2 in range(p1 + 1, length):
d = dist(points, p1, p2)
D[p1][p2] = d
D[p2][p1] = d
# 0 distance for start and end to make sure it's always connected
D[0][1] = 0
D[1][0] = 0
# solve
solution = solve_tsp_numpy(D, optim_steps=10)
# rearange solutions to start in start point
ind1 = solution.index(0)
ind2 = solution.index(1)
if ind2 > ind1:
solution = solution[::-1]
ind = solution.index(0)
solution = solution[ind:] + solution[:ind]
profile_points = []
for i in solution:
profile_points.append(points[i])
# friction
friction = "friction"
gs.mapcalc("{} = 0".format(friction), env=env)
tmp_dir = "tmp_dir"
tmp_cost = "tmp_cost"
tmp_drain = "tmp_drain"
gs.run_command("v.edit", tool="create", map=trail, env=env)
for i in range(len(solution) - 1):
gs.run_command(
"r.walk",
elevation=before,
friction=friction,
output=tmp_cost,
outdir=tmp_dir,
start_coordinates=points[solution[i]],
stop_coordinates=points[solution[i + 1]],
flags="k",
env=env,
)
gs.run_command(
"r.drain",
input=tmp_cost,
direction=tmp_dir,
output=tmp_drain,
drain=tmp_drain,
start_coordinates=points[solution[i + 1]],
flags="d",
env=env,
)
gs.run_command("v.patch",
input=tmp_drain,
output=trail,
flags="a",
env=env)
env2 = get_environment(raster=before)
# slope along line
gs.run_command("v.to.rast",
input=trail,
type="line",
output="trail_dir",
use="dir",
env=env2)
gs.run_command(
"r.slope.aspect",
elevation=before,
slope="saved_slope",
aspect="saved_aspect",
env=env2,
)
gs.mapcalc(
"slope_dir = abs(atan(tan({slope}) * cos({aspect} - {trail_dir})))".
format(slope="saved_slope",
aspect="saved_aspect",
trail_dir="trail_dir"),
env=env2,
)
# set new color table
colors = [
"0 green", "5 green", "5 yellow", "10 yellow", "10 red", "90 red"
]
gs.write_command("r.colors",
map="slope_dir",
rules="-",
stdin="\n".join(colors),
env=env2)
# increase thickness
gs.run_command("r.grow",
input="slope_dir",
radius=1.1,
output=resulting,
env=env2)
# update profile
event = updateProfile(points=profile_points)
eventHandler.postEvent(receiver=eventHandler.activities_panel, event=event)
def run_trails(real_elev, scanned_elev, blender_path, eventHandler, env, **kwargs):
env2 = get_environment(raster=scanned_elev, n='n-100', s='s+100', e='e-100', w='w+100')
resulting = 'trail'
trail = 'trail'
before = 'scan_saved'
topo_saved = 'topo_saved'
#env_crop = get_environment(raster=real_elev, n='n-100', s='s+100', e='e-100', w='w+100')
analyses.change_detection(before=before, after=scanned_elev,
change='change', height_threshold=[15, 100], cells_threshold=[5, 100], add=True, max_detected=13, debug=True, env=env2)
points = {}
# start and end
data = gscript.read_command('v.out.ascii', input='trail_points', type='point', format='point', env=env).strip()
c1, c2 = data.splitlines()
c1 = c1.split('|')
c2 = c2.split('|')
points[0] = (float(c1[0]), float(c1[1]))
points[1] = (float(c2[0]), float(c2[1]))
gscript.run_command('v.edit', tool='create', map=trail, env=env)
# detected points
points_raw = gscript.read_command('v.out.ascii', input='change',
type='point', format='point').strip().split()
i = 2
for point in points_raw:
point = point.split('|')
point = (float(point[0]), float(point[1]))
points[i] = point
i += 1
length = len(points)
if length == 2:
gscript.mapcalc("{} = null()".format(resulting), env=env)
event = updateProfile(points=[])
eventHandler.postEvent(receiver=eventHandler.activities_panel, event=event)
return
# distance matrix
D = []
for i in range(length):
D.append([0] * length)
for p1 in range(0, length - 1):
for p2 in range(p1 + 1, length):
d = dist(points, p1, p2)
D[p1][p2] = d
D[p2][p1] = d
# 0 distance for start and end to make sure it's always connected
D[0][1] = 0
D[1][0] = 0
# solve
solution = solve_tsp_numpy(D, optim_steps=10)
# rearange solutions to start in start point
ind1 = solution.index(0)
ind2 = solution.index(1)
if ind2 > ind1:
solution = solution[::-1]
ind = solution.index(0)
solution = solution[ind :] + solution[:ind ]
profile_points = []
for i in solution:
profile_points.append(points[i])
#return
# friction
friction = 'friction'
#gscript.mapcalc('{} = if(isnull(water), 0, null())'.format(friction), env=env)
gscript.mapcalc('{} = 0'.format(friction), env=env)
tmp_dir = 'tmp_dir'
tmp_cost = 'tmp_cost'
tmp_drain = 'tmp_drain'
gscript.run_command('v.edit', tool='create', map=trail, env=env)
for i in range(len(solution) - 1):
gscript.run_command('r.walk', elevation=topo_saved, friction=friction, output=tmp_cost, outdir=tmp_dir,
start_coordinates=points[solution[i]], stop_coordinates=points[solution[i+1]], flags='k',
env=env)
gscript.run_command('r.drain', input=tmp_cost, direction=tmp_dir, output=tmp_drain,
drain=tmp_drain, start_coordinates=points[solution[i+1]], flags='d', env=env)
gscript.run_command('v.patch', input=tmp_drain, output=trail, flags='a', env=env)
env2 = get_environment(raster=topo_saved)
# slope along line
gscript.run_command('v.to.rast', input=trail, type='line', output='trail_dir', use='dir', env=env2)
gscript.run_command('r.slope.aspect', elevation=topo_saved, slope='saved_slope', aspect='saved_aspect', env=env2)
gscript.mapcalc("slope_dir = abs(atan(tan({slope}) * cos({aspect} - {trail_dir})))".format(slope='saved_slope', aspect='saved_aspect',
trail_dir='trail_dir'), env=env2)
# set new color table
colors = ['0 green', '5 green', '5 yellow', '15 yellow', '15 red', '90 red']
gscript.write_command('r.colors', map='slope_dir', rules='-', stdin='\n'.join(colors), env=env2)
# increase thickness
gscript.run_command('r.grow', input='slope_dir', radius=1.1, output=resulting, env=env2)
# update profile
event = updateProfile(points=profile_points)
eventHandler.postEvent(receiver=eventHandler.activities_panel, event=event)
gscript.mapcalc('toponds = if ( isnull(ponds), {t}, ponds + {t})'.format(t=topo_saved), env=env)
gscript.run_command('v.generalize', input=trail, type='line', output=trail + 'gen', method='snakes', threshold=100, env=env)
gscript.run_command('g.rename', vector=[trail + 'gen', trail], env=env)
gscript.run_command('v.drape', input=trail, output=trail + '3d', elevation='toponds', env=env)
blender_export_vector(vector=trail + '3d', name=trail, z=True, vtype='line', path=blender_path, time_suffix=False, env=env)