'3d',

'cmds', 'set', 'unset', 'square', 'square_xy', 'title',

'hardcopy', 'terminal', 'output',

'with', 'rgbimage',

'equation', 'equation_above', 'equation_below',

'xmax', 'xmin', 'xrange', 'xinv', 'xlabel',

'y2max', 'y2min', 'y2range', 'y2inv', 'y2label',

'ymax', 'ymin', 'yrange', 'yinv', 'ylabel',

'zmax', 'zmin', 'zrange', 'zinv', 'zlabel',

# Be careful talking to gnuplot here. If you use a tty then gnuplot messes

# with the tty settings where it should NOT. For example it turns on the

# local echo. So make sure to not use a tty. Furthermore, I turn off the

# DISPLAY. I'm not actually plotting anything, so a DISPLAY can try to

# X-forward and be really slow pointlessly

# I pass in the current environment, but with DISPLAY turned off

env = os.environ.copy()

env['DISPLAY'] = ''

# first, I run 'gnuplot --help' to extract all the cmdline options as features

try:

helpstring = subprocess.check_output(['gnuplot', '--help'],

stderr=subprocess.STDOUT,

env=env).decode()

except FileNotFoundError:

print("Couldn't run gnuplot. Is it installed? Is it findable in the PATH?",

file=sys.stderr)

raise

features = set( re.findall(r'--([a-zA-Z0-9_]+)', helpstring) )

# then I try to set a square aspect ratio for 3D to see if it works

equal_3d_works = True

try:

out = subprocess.check_output(('gnuplot', '-e', "set view equal"),

stderr=subprocess.STDOUT,

env=env).decode()

if re.search("(undefined variable)|(unrecognized option)", out, re.I):

equal_3d_works = False

except:

equal_3d_works = False

if equal_3d_works:

features.add('equal_3d')

r'''Takes a dict, and renames all keys that start with an '_' to not contain that

d2 = {}

for key in d:

if isinstance(key, (str, bytes)) and key[0] == '_':

d2[key[1:]] = d[key]

else:

d2[key] = d[key]

'''Returns True if we're dumping a script, NOT actually running gnuplot'''

return \

plotOptions.get('dump') or \

plotOptions.get('terminal') == 'gp' or \

def __init__(self, **plotOptions):

# some defaults

self.plotOptions = _dictDeUnderscore(plotOptions)