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render_simulations.py
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render_simulations.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
AUTHOR: Brendan Harmon <brendan.harmon@gmail.com>
PURPOSE: Rendering 2D and 3D maps of landscape evolution simulations
COPYRIGHT: (C) 2017 Brendan Harmon
LICENSE: This program is free software under the GNU General Public
License (>=v2).
"""
import os
import sys
import atexit
import grass.script as gscript
from grass.exceptions import CalledModuleError
# set graphics driver
driver = "cairo"
# temporary region
gscript.use_temp_region()
# set environment
env = gscript.gisenv()
overwrite = True
env['GRASS_OVERWRITE'] = overwrite
env['GRASS_VERBOSE'] = False
env['GRASS_MESSAGE_FORMAT'] = 'standard'
gisdbase = env['GISDBASE']
location = env['LOCATION_NAME']
mapset = env['MAPSET']
region = 'elevation_2012_1m@PERMANENT'
res=1
# set 2D rendering parameters
legend_coord = (2, 32, 2, 4)
border = 400
width = 1600
height = 1600
font = 'Lato-Regular'
fontsize = 24
# temporal paramters
end_time = '2016_01_01_02_00_00'
# color tables
elevation_colors = """\
0% 0 132 132
89 0 191 191
93.6 0 255 0
98.2 255 255 0
102.8 255 127 0
107.4 191 127 63
112 200 200 200
100% 200 200 200
nv white
default white
"""
flux_colors = """\
0 255:255:255
0.0001 255:255:0
0.125 255:127:0
0.25 191:127:63
100% 0:0:0
nv 255:255:255
default 255:255:255
"""
def main():
"""try to install dependencies"""
# dependencies()
"""render maps"""
render_region_2d(mapset)
# render_region_3d(mapset)
# render_legends(mapset)
render_subregion_2d(mapset)
# render_fortbragg_2d()
atexit.register(cleanup)
sys.exit(0)
def render_region_2d(mapset):
"""2D rendering of region"""
# create rendering directory
render = os.path.join(gisdbase, 'images', mapset)
if not os.path.exists(render):
os.makedirs(render)
# set region and mask
gscript.run_command('g.region',
raster=region,
res=res)
gscript.run_command('r.mask', vector='watershed')
# set color tables
gscript.write_command(
'r.colors',
map='elevation_{time}'.format(time=end_time),
rules='-',
stdin=elevation_colors)
# compute and render shaded relief
gscript.run_command('d.mon',
start=driver,
width=width,
height=height,
output=os.path.join(render, 'shaded_relief'+'.png'),
overwrite=overwrite)
gscript.run_command('r.relief',
input='elevation_{time}'.format(time=end_time),
output='shaded_relief',
altitude=90,
azimuth=45,
zscale=3,
overwrite=overwrite)
gscript.run_command('d.shade',
shade='shaded_relief',
color='elevation_{time}'.format(time=end_time),
brighten=5,
overwrite=overwrite)
gscript.run_command('d.legend',
raster='elevation_{time}'.format(time=end_time),
font=font,
fontsize=fontsize,
at=legend_coord)
gscript.run_command('d.mon', stop=driver)
# render net difference
gscript.run_command('d.mon',
start=driver,
width=width,
height=height,
output=os.path.join(render, 'net_difference'+'.png'),
overwrite=overwrite)
gscript.run_command('d.rast',
map='net_difference')
gscript.run_command('d.legend',
raster='net_difference',
font=font,
fontsize=fontsize,
at=legend_coord)
gscript.run_command('d.mon', stop=driver)
# compute and render landforms
gscript.run_command('d.mon',
start=driver,
width=width,
height=height,
output=os.path.join(render, 'landforms'+'.png'),
overwrite=overwrite)
gscript.run_command('r.geomorphon',
elevation='elevation_{time}'.format(time=end_time),
forms='landforms',
search=64,
skip=0,
flat=1,
dist=0,
step=0,
start=0,
overwrite=overwrite)
# gscript.run_command('d.shade',
# shade='shaded_relief',
# color='landforms',
# brighten=0)
gscript.run_command('d.rast',
map='landforms')
gscript.run_command('d.legend',
raster='landforms',
font=font,
fontsize=fontsize,
at=legend_coord)
gscript.run_command('d.mon', stop=driver)
# render water depth with shaded relief
gscript.run_command('d.mon',
start=driver,
width=width,
height=height,
output=os.path.join(render, 'depth'+'.png'),
overwrite=overwrite)
gscript.run_command('d.shade',
shade='shaded_relief',
color='depth_{time}'.format(time=end_time),
brighten=20)
gscript.run_command('d.legend',
raster='depth_{time}'.format(time=end_time),
fontsize=fontsize,
font=font,
at=legend_coord)
gscript.run_command('d.mon', stop=driver)
# check for erosion-deposition
find_raster = gscript.find_file('erosion_deposition_{time}'.format(time=end_time),
element='cell')
if find_raster['file']:
# render erosion-deposition
gscript.run_command('d.mon',
start=driver,
width=width,
height=height,
output=os.path.join(render, 'erdep'+'.png'),
overwrite=overwrite)
gscript.run_command('d.shade',
shade='shaded_relief',
color='erosion_deposition_{time}'.format(time=end_time),
brighten=20)
gscript.run_command('d.legend',
raster='erosion_deposition_{time}'.format(time=end_time),
font=font,
fontsize=fontsize,
at=legend_coord)
gscript.run_command('d.mon', stop=driver)
# check for flux
find_raster = gscript.find_file('flux_{time}'.format(time=end_time),
element='cell')
if find_raster['file']:
# render flux
gscript.run_command('d.mon',
start=driver,
width=width,
height=height,
output=os.path.join(render, 'flux'+'.png'),
overwrite=overwrite)
gscript.write_command(
'r.colors',
map='flux_{time}'.format(time=end_time),
rules='-',
stdin=flux_colors)
gscript.run_command('d.rast',
map='flux_{time}'.format(time=end_time))
gscript.run_command('d.legend',
raster='flux_{time}'.format(time=end_time),
font=font,
fontsize=fontsize,
labelnum='2',
at=legend_coord,
flags='l')
gscript.run_command('d.mon', stop=driver)
# remove mask
gscript.run_command('r.mask', flags='r')
def render_subregion_2d(mapset):
"""2D rendering of region"""
# create rendering directory
render = os.path.join(gisdbase, 'images', mapset+'_detail')
if not os.path.exists(render):
os.makedirs(render)
# set region and mask
gscript.run_command('g.region',
vector='subwatershed',
res=res)
gscript.run_command('r.mask', vector='subwatershed')
# set color tables
gscript.write_command(
'r.colors',
map='elevation_{time}'.format(time=end_time),
rules='-',
stdin=elevation_colors)
# compute and render shaded relief
gscript.run_command('d.mon',
start=driver,
width=width,
height=height,
output=os.path.join(render, 'shaded_relief'+'.png'),
overwrite=overwrite)
gscript.run_command('r.relief',
input='elevation_{time}'.format(time=end_time),
output='shaded_relief',
altitude=90,
azimuth=45,
zscale=3,
overwrite=overwrite)
gscript.run_command('d.shade',
shade='shaded_relief',
color='elevation_{time}'.format(time=end_time),
brighten=5,
overwrite=overwrite)
gscript.run_command('d.legend',
raster='elevation_{time}'.format(time=end_time),
font=font,
fontsize=fontsize,
at=legend_coord)
gscript.run_command('d.mon', stop=driver)
# render net difference
gscript.run_command('d.mon',
start=driver,
width=width,
height=height,
output=os.path.join(render, 'net_difference'+'.png'),
overwrite=overwrite)
gscript.run_command('d.rast',
map='net_difference')
gscript.run_command('d.legend',
raster='net_difference',
font=font,
fontsize=fontsize,
at=legend_coord)
gscript.run_command('d.mon', stop=driver)
# compute and render landforms
gscript.run_command('d.mon',
start=driver,
width=width,
height=height,
output=os.path.join(render, 'landforms'+'.png'),
overwrite=overwrite)
gscript.run_command('r.geomorphon',
elevation='elevation_{time}'.format(time=end_time),
forms='landforms',
search=64,
skip=0,
flat=1,
dist=0,
step=0,
start=0,
overwrite=overwrite)
# gscript.run_command('d.shade',
# shade='shaded_relief',
# color='landforms',
# brighten=0)
gscript.run_command('d.rast',
map='landforms')
gscript.run_command('d.legend',
raster='landforms',
font=font,
fontsize=fontsize,
at=legend_coord)
gscript.run_command('d.mon', stop=driver)
# render water depth with shaded relief
gscript.run_command('d.mon',
start=driver,
width=width,
height=height,
output=os.path.join(render, 'depth'+'.png'),
overwrite=overwrite)
gscript.run_command('d.shade',
shade='shaded_relief',
color='depth_{time}'.format(time=end_time),
brighten=20)
gscript.run_command('d.legend',
raster='depth_{time}'.format(time=end_time),
font=font,
fontsize=fontsize,
at=legend_coord)
gscript.run_command('d.mon', stop=driver)
# check for erosion-deposition
find_raster = gscript.find_file('erosion_deposition_{time}'.format(time=end_time),
element='cell')
if find_raster['file']:
# render erosion-deposition
gscript.run_command('d.mon',
start=driver,
width=width,
height=height,
output=os.path.join(render, 'erdep'+'.png'),
overwrite=overwrite)
gscript.run_command('d.shade',
shade='shaded_relief',
color='erosion_deposition_{time}'.format(time=end_time),
brighten=20)
gscript.run_command('d.legend',
raster='erosion_deposition_{time}'.format(time=end_time),
font=font,
fontsize=fontsize,
at=legend_coord)
gscript.run_command('d.mon', stop=driver)
# check for flux
find_raster = gscript.find_file('flux_{time}'.format(time=end_time),
element='cell')
if find_raster['file']:
# render flux
gscript.run_command('d.mon',
start=driver,
width=width,
height=height,
output=os.path.join(render, 'flux'+'.png'),
overwrite=overwrite)
gscript.write_command(
'r.colors',
map='flux_{time}'.format(time=end_time),
rules='-',
stdin=flux_colors)
gscript.run_command('d.rast',
map='flux_{time}'.format(time=end_time))
gscript.run_command('d.legend',
raster='flux_{time}'.format(time=end_time),
font=font,
fontsize=fontsize,
labelnum='2',
at=legend_coord,
flags='l')
gscript.run_command('d.mon', stop=driver)
# remove mask
gscript.run_command('r.mask', flags='r')
def render_fortbragg_2d():
# create rendering directory
render = os.path.join(gisdbase, 'images', mapset)
if not os.path.exists(render):
os.makedirs(render)
# set region
gscript.run_command('g.region', region='fortbragg', res=10)
# set mask
gscript.run_command('r.mask', raster='fortbragg_cfactor')
# compute relief
gscript.run_command('r.relief',
input='fortbragg_elevation_10m_2012',
output='relief',
altitude=90,
azimuth=45,
zscale=3,
overwrite=overwrite)
# compute skyview
gscript.run_command('r.skyview',
input='fortbragg_elevation_10m_2012',
output='skyview',
ndir=16,
colorized_output='colorized_skyview',
overwrite=overwrite)
# render net difference
gscript.run_command('d.mon',
start=driver,
width=width*2,
height=height,
output=os.path.join(render, 'net_difference'+'.png'),
overwrite=overwrite)
gscript.run_command('d.shade',
shade='skyview',
color='net_difference',
brighten=20,
overwrite=overwrite)
gscript.run_command('d.legend',
raster='net_difference',
font=font,
fontsize=fontsize,
at=legend_coord)
gscript.run_command('d.mon', stop=driver)
# remove mask
gscript.run_command('r.mask', flags='r')
def render_region_3d(mapset):
"""3D rendering of region with nviz"""
# set 3d rendering parameters
camera_height = 750
perspective = 15
position = 1.0, 1.0
light_position = (0.68, -0.68, 0.95)
fringe = "se"
fringe_color = "255:255:255"
fringe_elevation = 85
size = (1200, 1200)
zexag = 3
vwidth = 3
# create rendering directory
render = os.path.join(gisdbase, 'images', mapset+'_3d')
if not os.path.exists(render):
os.makedirs(render)
# set region
gscript.run_command('g.region',
region='region',
res=res)
# mask rasters
gscript.run_command('r.mask', vector='watershed')
gscript.run_command('r.mapcalc',
expression="depth = {raster}".format(raster='depth_'+end_time),
overwrite=True)
find_raster = gscript.find_file('flux_{time}'.format(time=end_time),
element='cell')
if find_raster['file']:
gscript.run_command('r.mapcalc',
expression="flux = {raster}".format(raster='flux_'+end_time),
overwrite=True)
find_raster = gscript.find_file('erosion_deposition_{time}'.format(time=end_time),
element='cell')
if find_raster['file']:
gscript.run_command('r.mapcalc',
expression="erosion_deposition = {raster}".format(raster='erosion_deposition_'+end_time),
overwrite=True)
gscript.run_command('r.mapcalc',
expression="difference = {raster}".format(raster='net_difference'),
overwrite=True)
gscript.run_command('r.mask', flags='r')
# list of rasters to render
rasters = ['elevation_'+end_time,
'colorized_skyview',
'landforms',
'depth',
'flux',
'erosion_deposition',
'difference']
for raster in rasters:
# check if raster exists
find_raster = gscript.find_file(raster,
element='cell')
if find_raster['file']:
# 3D render raster
gscript.run_command('m.nviz.image',
elevation_map='elevation_'+end_time,
color_map=raster,
resolution_fine=1,
vline='watershed',
vline_width=vwidth,
vline_color='black',
height=camera_height,
position=position,
perspective=perspective,
zexag=zexag,
light_position=light_position,
fringe=fringe,
fringe_color=fringe_color,
fringe_elevation=fringe_elevation,
output=os.path.join(render,raster),
format='tif',
size=size,
errors='ignore'
)
# remove temporary maps
gscript.run_command(
'g.remove',
type='raster',
name=['depth',
'erdep',
'flux',
'difference'],
flags='f')
def render_legends(mapset):
"""render raster map legends"""
# create rendering directory
render = os.path.join(gisdbase, 'images', mapset+'_3d')
if not os.path.exists(render):
os.makedirs(render)
# set region
gscript.run_command('g.region',
region='region',
res=res)
# mask rasters
gscript.run_command('r.mask', vector='watershed')
# export legends
gscript.run_command('r.out.legend',
raster='elevation_'+end_time,
file=os.path.join(render,'legend_elevation.png'),
filetype='cairo',
dimensions=[0.8,6],
resolution=300,
color='none',
digits=3,
font='Lato-Regular',
overwrite=overwrite)
gscript.run_command('r.out.legend',
raster='depth_'+end_time,
file=os.path.join(render,'legend_depth.png'),
filetype='cairo',
dimensions=[0.8,6],
resolution=300,
color='none',
range=[0,1],
digits=3,
font='Lato-Regular',
overwrite=overwrite)
gscript.run_command('r.out.legend',
raster='net_difference',
file=os.path.join(render,'legend_difference.png'),
filetype='cairo',
dimensions=[0.8,6],
resolution=300,
color='none',
digits=4,
font='Lato-Regular',
overwrite=overwrite)
find_raster = gscript.find_file('erosion_deposition_{time}'.format(time=end_time),
element='cell')
if find_raster['file']:
gscript.run_command('r.out.legend',
raster='erosion_deposition_'+end_time,
file=os.path.join(render,'legend_erosion_deposition.png'),
filetype='cairo',
dimensions=[0.8,6],
resolution=300,
color='none',
range=[-0.25,0.25],
digits=4,
font='Lato-Regular',
overwrite=overwrite)
find_raster = gscript.find_file('flux_{time}'.format(time=end_time),
element='cell')
if find_raster['file']:
gscript.run_command('r.out.legend',
raster='flux_'+end_time,
file=os.path.join(render,'legend_flux.png'),
filetype='cairo',
dimensions=[0.8,6],
resolution=300,
color='none',
range=[0,25],
digits=3,
font='Lato-Regular',
overwrite=overwrite)
# remove mask
gscript.run_command('r.mask', flags='r')
def dependencies():
"""try to install required add-ons"""
try:
gscript.run_command('g.extension',
extension='r.skyview',
operation='add')
except CalledModuleError:
pass
try:
gscript.run_command('g.extension',
extension='r.geomorphon',
operation='add')
except CalledModuleError:
pass
try:
gscript.run_command('g.extension',
extension='r.out.legend',
operation='add')
except CalledModuleError:
pass
def cleanup():
try:
# stop cairo monitor
gscript.run_command('d.mon', stop=driver)
except CalledModuleError:
pass
try:
# remove mask
gscript.run_command('r.mask', flags='r')
except CalledModuleError:
pass
if __name__ == "__main__":
atexit.register(cleanup)
sys.exit(main())