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"""
plotly
======
A module that contains the plotly class, a liaison between the user
and ploty's servers.
1. get DEFAULT_PLOT_OPTIONS for options
2. update plot_options with .plotly/ dir
3. update plot_options with _plot_options
4. update plot_options with kwargs!
"""
from
__future__
import
absolute_import
import
copy
import
os
import
warnings
import
six
import
six
.
moves
from
requests
.
compat
import
json
as
_json
from
plotly
import
exceptions
,
files
,
session
,
tools
,
utils
from
plotly
.
api
import
v1
,
v2
from
plotly
.
plotly
import
chunked_requests
from
plotly
.
grid_objs
import
Grid
,
Column
# This is imported like this for backwards compat. Careful if changing.
from
plotly
.
config
import
get_config
,
get_credentials
__all__
=
None
DEFAULT_PLOT_OPTIONS
=
{
'filename'
:
"plot from API"
,
'fileopt'
:
"new"
,
'world_readable'
:
files
.
FILE_CONTENT
[
files
.
CONFIG_FILE
][
'world_readable'
],
'auto_open'
:
files
.
FILE_CONTENT
[
files
.
CONFIG_FILE
][
'auto_open'
],
'validate'
:
True
,
'sharing'
:
files
.
FILE_CONTENT
[
files
.
CONFIG_FILE
][
'sharing'
]
}
# test file permissions and make sure nothing is corrupted
tools
.
ensure_local_plotly_files
()
# don't break backwards compatibility
def
sign_in
(
username
,
api_key
,
**
kwargs
):
session
.
sign_in
(
username
,
api_key
,
**
kwargs
)
try
:
# The only way this can succeed is if the user can be authenticated
# with the given, username, api_key, and plotly_api_domain.
v2
.
users
.
current
()
except
exceptions
.
PlotlyRequestError
:
raise
exceptions
.
PlotlyError
(
'Sign in failed.'
)
update_plot_options
=
session
.
update_session_plot_options
def
_plot_option_logic
(
plot_options_from_call_signature
):
"""
Given some plot_options as part of a plot call, decide on final options.
Precedence:
1 - Start with DEFAULT_PLOT_OPTIONS
2 - Update each key with ~/.plotly/.config options (tls.get_config)
3 - Update each key with session plot options (set by py.sign_in)
4 - Update each key with plot, iplot call signature options
"""
default_plot_options
=
copy
.
deepcopy
(
DEFAULT_PLOT_OPTIONS
)
file_options
=
tools
.
get_config_file
()
session_options
=
session
.
get_session_plot_options
()
plot_options_from_call_signature
=
copy
.
deepcopy
(
plot_options_from_call_signature
)
# Validate options and fill in defaults w world_readable and sharing
for
option_set
in
[
plot_options_from_call_signature
,
session_options
,
file_options
]:
utils
.
validate_world_readable_and_sharing_settings
(
option_set
)
utils
.
set_sharing_and_world_readable
(
option_set
)
# dynamic defaults
if
(
'filename'
in
option_set
and
'fileopt'
not
in
option_set
):
option_set
[
'fileopt'
]
=
'overwrite'
user_plot_options
=
{}
user_plot_options
.
update
(
default_plot_options
)
user_plot_options
.
update
(
file_options
)
user_plot_options
.
update
(
session_options
)
user_plot_options
.
update
(
plot_options_from_call_signature
)
user_plot_options
=
{
k
:
v
for
k
,
v
in
user_plot_options
.
items
()
if
k
in
default_plot_options
}
return
user_plot_options
def
iplot
(
figure_or_data
,
**
plot_options
):
"""Create a unique url for this plot in Plotly and open in IPython.
plot_options keyword agruments:
filename (string) -- the name that will be associated with this figure
fileopt ('new' | 'overwrite' | 'extend' | 'append')
- 'new': create a new, unique url for this plot
- 'overwrite': overwrite the file associated with `filename` with this
- 'extend': add additional numbers (data) to existing traces
- 'append': add additional traces to existing data lists
sharing ('public' | 'private' | 'secret') -- Toggle who can view this graph
- 'public': Anyone can view this graph. It will appear in your profile
and can appear in search engines. You do not need to be
logged in to Plotly to view this chart.
- 'private': Only you can view this plot. It will not appear in the
Plotly feed, your profile, or search engines. You must be
logged in to Plotly to view this graph. You can privately
share this graph with other Plotly users in your online
Plotly account and they will need to be logged in to
view this plot.
- 'secret': Anyone with this secret link can view this chart. It will
not appear in the Plotly feed, your profile, or search
engines. If it is embedded inside a webpage or an IPython
notebook, anybody who is viewing that page will be able to
view the graph. You do not need to be logged in to view
this plot.
world_readable (default=True) -- Deprecated: use "sharing".
Make this figure private/public
"""
if
'auto_open'
not
in
plot_options
:
plot_options
[
'auto_open'
]
=
False
url
=
plot
(
figure_or_data
,
**
plot_options
)
if
isinstance
(
figure_or_data
,
dict
):
layout
=
figure_or_data
.
get
(
'layout'
, {})
else
:
layout
=
{}
embed_options
=
dict
()
embed_options
[
'width'
]
=
layout
.
get
(
'width'
,
'100%'
)
embed_options
[
'height'
]
=
layout
.
get
(
'height'
,
525
)
try
:
float
(
embed_options
[
'width'
])
except
(
ValueError
,
TypeError
):
pass
else
:
embed_options
[
'width'
]
=
str
(
embed_options
[
'width'
])
+
'px'
try
:
float
(
embed_options
[
'height'
])
except
(
ValueError
,
TypeError
):
pass
else
:
embed_options
[
'height'
]
=
str
(
embed_options
[
'height'
])
+
'px'
return
tools
.
embed
(
url
,
**
embed_options
)
def
plot
(
figure_or_data
,
validate
=
True
,
**
plot_options
):
"""Create a unique url for this plot in Plotly and optionally open url.
plot_options keyword agruments:
filename (string) -- the name that will be associated with this figure
fileopt ('new' | 'overwrite' | 'extend' | 'append') -- 'new' creates a
'new': create a new, unique url for this plot
'overwrite': overwrite the file associated with `filename` with this
'extend': add additional numbers (data) to existing traces
'append': add additional traces to existing data lists
auto_open (default=True) -- Toggle browser options
True: open this plot in a new browser tab
False: do not open plot in the browser, but do return the unique url
sharing ('public' | 'private' | 'secret') -- Toggle who can view this
graph
- 'public': Anyone can view this graph. It will appear in your profile
and can appear in search engines. You do not need to be
logged in to Plotly to view this chart.
- 'private': Only you can view this plot. It will not appear in the
Plotly feed, your profile, or search engines. You must be
logged in to Plotly to view this graph. You can privately
share this graph with other Plotly users in your online
Plotly account and they will need to be logged in to
view this plot.
- 'secret': Anyone with this secret link can view this chart. It will
not appear in the Plotly feed, your profile, or search
engines. If it is embedded inside a webpage or an IPython
notebook, anybody who is viewing that page will be able to
view the graph. You do not need to be logged in to view
this plot.
world_readable (default=True) -- Deprecated: use "sharing".
Make this figure private/public
"""
figure
=
tools
.
return_figure_from_figure_or_data
(
figure_or_data
,
validate
)
for
entry
in
figure
[
'data'
]:
if
(
'type'
in
entry
)
and
(
entry
[
'type'
]
==
'scattergl'
):
continue
for
key
,
val
in
list
(
entry
.
items
()):
try
:
if
len
(
val
)
>
40000
:
msg
=
(
"Woah there! Look at all those points! Due to "
"browser limitations, the Plotly SVG drawing "
"functions have a hard time "
"graphing more than 500k data points for line "
"charts, or 40k points for other types of charts. "
"Here are some suggestions:
\n
"
"(1) Use the `plotly.graph_objs.Scattergl` "
"trace object to generate a WebGl graph.
\n
"
"(2) Trying using the image API to return an image "
"instead of a graph URL
\n
"
"(3) Use matplotlib
\n
"
"(4) See if you can create your visualization with "
"fewer data points
\n
\n
"
"If the visualization you're using aggregates "
"points (e.g., box plot, histogram, etc.) you can "
"disregard this warning."
)
warnings
.
warn
(
msg
)
except
TypeError
:
pass
plot_options
=
_plot_option_logic
(
plot_options
)
fig
=
tools
.
_replace_newline
(
figure
)
# does not mutate figure
data
=
fig
.
get
(
'data'
, [])
plot_options
[
'layout'
]
=
fig
.
get
(
'layout'
, {})
response
=
v1
.
clientresp
(
data
,
**
plot_options
)
# Check if the url needs a secret key
url
=
response
.
json
()[
'url'
]
if
plot_options
[
'sharing'
]
==
'secret'
:
if
'share_key='
not
in
url
:
# add_share_key_to_url updates the url to include the share_key
url
=
add_share_key_to_url
(
url
)
if
plot_options
[
'auto_open'
]:
_open_url
(
url
)
return
url
def
iplot_mpl
(
fig
,
resize
=
True
,
strip_style
=
False
,
update
=
None
,
**
plot_options
):
"""Replot a matplotlib figure with plotly in IPython.
This function:
1. converts the mpl figure into JSON (run help(plolty.tools.mpl_to_plotly))
2. makes a request to Plotly to save this figure in your account
3. displays the image in your IPython output cell
Positional agruments:
fig -- a figure object from matplotlib
Keyword arguments:
resize (default=True) -- allow plotly to choose the figure size
strip_style (default=False) -- allow plotly to choose style options
update (default=None) -- update the resulting figure with an 'update'
dictionary-like object resembling a plotly 'Figure' object
Additional keyword arguments:
plot_options -- run help(plotly.plotly.iplot)
"""
fig
=
tools
.
mpl_to_plotly
(
fig
,
resize
=
resize
,
strip_style
=
strip_style
)
if
update
and
isinstance
(
update
,
dict
):
fig
.
update
(
update
)
fig
.
validate
()
elif
update
is
not
None
:
raise
exceptions
.
PlotlyGraphObjectError
(
"'update' must be dictionary-like and a valid plotly Figure "
"object. Run 'help(plotly.graph_objs.Figure)' for more info."
)
return
iplot
(
fig
,
**
plot_options
)
def
plot_mpl
(
fig
,
resize
=
True
,
strip_style
=
False
,
update
=
None
,
**
plot_options
):
"""Replot a matplotlib figure with plotly.
This function:
1. converts the mpl figure into JSON (run help(plolty.tools.mpl_to_plotly))
2. makes a request to Plotly to save this figure in your account
3. opens your figure in a browser tab OR returns the unique figure url
Positional agruments:
fig -- a figure object from matplotlib
Keyword arguments:
resize (default=True) -- allow plotly to choose the figure size
strip_style (default=False) -- allow plotly to choose style options
update (default=None) -- update the resulting figure with an 'update'
dictionary-like object resembling a plotly 'Figure' object
Additional keyword arguments:
plot_options -- run help(plotly.plotly.plot)
"""
fig
=
tools
.
mpl_to_plotly
(
fig
,
resize
=
resize
,
strip_style
=
strip_style
)
if
update
and
isinstance
(
update
,
dict
):
fig
.
update
(
update
)
fig
.
validate
()
elif
update
is
not
None
:
raise
exceptions
.
PlotlyGraphObjectError
(
"'update' must be dictionary-like and a valid plotly Figure "
"object. Run 'help(plotly.graph_objs.Figure)' for more info."
)
return
plot
(
fig
,
**
plot_options
)
def
_swap_keys
(
obj
,
key1
,
key2
):
"""Swap obj[key1] with obj[key2]"""
val1
,
val2
=
None
,
None
try
:
val2
=
obj
.
pop
(
key1
)
except
KeyError
:
pass
try
:
val1
=
obj
.
pop
(
key2
)
except
KeyError
:
pass
if
val2
is
not
None
:
obj
[
key2
]
=
val2
if
val1
is
not
None
:
obj
[
key1
]
=
val1
def
_swap_xy_data
(
data_obj
):
"""Swap x and y data and references"""
swaps
=
[(
'x'
,
'y'
),
(
'x0'
,
'y0'
),
(
'dx'
,
'dy'
),
(
'xbins'
,
'ybins'
),
(
'nbinsx'
,
'nbinsy'
),
(
'autobinx'
,
'autobiny'
),
(
'error_x'
,
'error_y'
)]
for
swap
in
swaps
:
_swap_keys
(
data_obj
,
swap
[
0
],
swap
[
1
])
try
:
rows
=
len
(
data_obj
[
'z'
])
cols
=
len
(
data_obj
[
'z'
][
0
])
for
row
in
data_obj
[
'z'
]:
if
len
(
row
)
!=
cols
:
raise
TypeError
# if we can't do transpose, we hit an exception before here
z
=
data_obj
.
pop
(
'z'
)
data_obj
[
'z'
]
=
[[
0
for
rrr
in
range
(
rows
)]
for
ccc
in
range
(
cols
)]
for
iii
in
range
(
rows
):
for
jjj
in
range
(
cols
):
data_obj
[
'z'
][
jjj
][
iii
]
=
z
[
iii
][
jjj
]
except
(
KeyError
,
TypeError
,
IndexError
)
as
err
:
warn
=
False
try
:
if
data_obj
[
'z'
]
is
not
None
:
warn
=
True
if
len
(
data_obj
[
'z'
])
==
0
:
warn
=
False
except
(
KeyError
,
TypeError
):
pass
if
warn
:
warnings
.
warn
(
"Data in this file required an 'xy' swap but the 'z' matrix "
"in one of the data objects could not be transposed. Here's "
"why:
\n
\n
{}"
.
format
(
repr
(
err
))
)
def
get_figure
(
file_owner_or_url
,
file_id
=
None
,
raw
=
False
):
"""Returns a JSON figure representation for the specified file
Plotly uniquely identifies figures with a 'file_owner'/'file_id' pair.
Since each file is given a corresponding unique url, you may also simply
pass a valid plotly url as the first argument.
Examples:
fig = get_figure('https://plot.ly/~chris/1638')
fig = get_figure('chris', 1638)
Note, if you're using a file_owner string as the first argument, you MUST
specify a `file_id` keyword argument. Else, if you're using a url string
as the first argument, you MUST NOT specify a `file_id` keyword argument,
or file_id must be set to Python's None value.
Positional arguments:
file_owner_or_url (string) -- a valid plotly username OR a valid plotly url
Keyword arguments:
file_id (default=None) -- an int or string that can be converted to int
if you're using a url, don't fill this in!
raw (default=False) -- if true, return unicode JSON string verbatim**
**by default, plotly will return a Figure object (run help(plotly
.graph_objs.Figure)). This representation decodes the keys and values from
unicode (if possible), removes information irrelevant to the figure
representation, and converts the JSON dictionary objects to plotly
`graph objects`.
"""
plotly_rest_url
=
get_config
()[
'plotly_domain'
]
if
file_id
is
None
:
# assume we're using a url
url
=
file_owner_or_url
if
url
[:
len
(
plotly_rest_url
)]
!=
plotly_rest_url
:
raise
exceptions
.
PlotlyError
(
"Because you didn't supply a 'file_id' in the call, "
"we're assuming you're trying to snag a figure from a url. "
"You supplied the url, '{0}', we expected it to start with "
"'{1}'."
"
\n
Run help on this function for more information."
""
.
format
(
url
,
plotly_rest_url
))
head
=
plotly_rest_url
+
"/~"
file_owner
=
url
.
replace
(
head
,
""
).
split
(
'/'
)[
0
]
file_id
=
url
.
replace
(
head
,
""
).
split
(
'/'
)[
1
]
else
:
file_owner
=
file_owner_or_url
try
:
int
(
file_id
)
except
ValueError
:
raise
exceptions
.
PlotlyError
(
"The 'file_id' argument was not able to be converted into an "
"integer number. Make sure that the positional 'file_id' argument "
"is a number that can be converted into an integer or a string "
"that can be converted into an integer."
)
if
int
(
file_id
)
<
0
:
raise
exceptions
.
PlotlyError
(
"The 'file_id' argument must be a non-negative number."
)
fid
=
'{}:{}'
.
format
(
file_owner
,
file_id
)
response
=
v2
.
plots
.
content
(
fid
,
inline_data
=
True
)
figure
=
response
.
json
()
# Fix 'histogramx', 'histogramy', and 'bardir' stuff
for
index
,
entry
in
enumerate
(
figure
[
'data'
]):
try
:
# Use xbins to bin data in x, and ybins to bin data in y
if
all
((
entry
[
'type'
]
==
'histogramy'
,
'xbins'
in
entry
,
'ybins'
not
in
entry
)):
entry
[
'ybins'
]
=
entry
.
pop
(
'xbins'
)
# Convert bardir to orientation, and put the data into the axes
# it's eventually going to be used with
if
entry
[
'type'
]
in
[
'histogramx'
,
'histogramy'
]:
entry
[
'type'
]
=
'histogram'
if
'bardir'
in
entry
:
entry
[
'orientation'
]
=
entry
.
pop
(
'bardir'
)
if
entry
[
'type'
]
==
'bar'
:
if
entry
[
'orientation'
]
==
'h'
:
_swap_xy_data
(
entry
)
if
entry
[
'type'
]
==
'histogram'
:
if
(
'x'
in
entry
)
and
(
'y'
not
in
entry
):
if
entry
[
'orientation'
]
==
'h'
:
_swap_xy_data
(
entry
)
del
entry
[
'orientation'
]
if
(
'y'
in
entry
)
and
(
'x'
not
in
entry
):
if
entry
[
'orientation'
]
==
'v'
:
_swap_xy_data
(
entry
)
del
entry
[
'orientation'
]
figure
[
'data'
][
index
]
=
entry
except
KeyError
:
pass
# Remove stream dictionary if found in a data trace
# (it has private tokens in there we need to hide!)
for
index
,
entry
in
enumerate
(
figure
[
'data'
]):
if
'stream'
in
entry
:
del
figure
[
'data'
][
index
][
'stream'
]
if
raw
:
return
figure
return
tools
.
get_valid_graph_obj
(
figure
,
obj_type
=
'Figure'
)
@
utils
.
template_doc
(
**
tools
.
get_config_file
())
class
Stream
:
"""
Interface to Plotly's real-time graphing API.
Initialize a Stream object with a stream_id
found in {plotly_domain}/settings.
Real-time graphs are initialized with a call to `plot` that embeds
your unique `stream_id`s in each of the graph's traces. The `Stream`
interface plots data to these traces, as identified with the unique
stream_id, in real-time.
Every viewer of the graph sees the same data at the same time.
View examples and tutorials here:
https://plot.ly/python/streaming/
Stream example:
# Initialize a streaming graph
# by embedding stream_id's in the graph's traces
import plotly.plotly as py
from plotly.graph_objs import Data, Scatter, Stream
stream_id = "your_stream_id" # See {plotly_domain}/settings
py.plot(Data([Scatter(x=[], y=[],
stream=Stream(token=stream_id, maxpoints=100))]))
# Stream data to the import trace
stream = Stream(stream_id) # Initialize a stream object
stream.open() # Open the stream
stream.write(dict(x=1, y=1)) # Plot (1, 1) in your graph
"""
HTTP_PORT
=
80
HTTPS_PORT
=
443
@
utils
.
template_doc
(
**
tools
.
get_config_file
())
def
__init__
(
self
,
stream_id
):
"""
Initialize a Stream object with your unique stream_id.
Find your stream_id at {plotly_domain}/settings.
For more help, see: `help(plotly.plotly.Stream)`
or see examples and tutorials here:
https://plot.ly/python/streaming/
"""
self
.
stream_id
=
stream_id
self
.
_stream
=
None
def
get_streaming_specs
(
self
):
"""
Returns the streaming server, port, ssl_enabled flag, and headers.
"""
streaming_url
=
get_config
()[
'plotly_streaming_domain'
]
ssl_verification_enabled
=
get_config
()[
'plotly_ssl_verification'
]
ssl_enabled
=
'https'
in
streaming_url
port
=
self
.
HTTPS_PORT
if
ssl_enabled
else
self
.
HTTP_PORT
# If no scheme (https/https) is included in the streaming_url, the
# host will be None. Use streaming_url in this case.
host
=
(
six
.
moves
.
urllib
.
parse
.
urlparse
(
streaming_url
).
hostname
or
streaming_url
)
headers
=
{
'Host'
:
host
,
'plotly-streamtoken'
:
self
.
stream_id
}
streaming_specs
=
{
'server'
:
host
,
'port'
:
port
,
'ssl_enabled'
:
ssl_enabled
,
'ssl_verification_enabled'
:
ssl_verification_enabled
,
'headers'
:
headers
}
return
streaming_specs
def
heartbeat
(
self
,
reconnect_on
=
(
200
,
''
,
408
)):
"""
Keep stream alive. Streams will close after ~1 min of inactivity.
If the interval between stream writes is > 30 seconds, you should
consider adding a heartbeat between your stream.write() calls like so:
>>> stream.heartbeat()
"""
try
:
self
.
_stream
.
write
(
'
\n
'
,
reconnect_on
=
reconnect_on
)
except
AttributeError
:
raise
exceptions
.
PlotlyError
(
"Stream has not been opened yet, "
"cannot write to a closed connection. "
"Call `open()` on the stream to open the stream."
)
@
property
def
connected
(
self
):
if
self
.
_stream
is
None
:
return
False
return
self
.
_stream
.
_isconnected
()
def
open
(
self
):
"""
Open streaming connection to plotly.
For more help, see: `help(plotly.plotly.Stream)`
or see examples and tutorials here:
https://plot.ly/python/streaming/
"""
streaming_specs
=
self
.
get_streaming_specs
()
self
.
_stream
=
chunked_requests
.
Stream
(
**
streaming_specs
)
def
write
(
self
,
trace
,
layout
=
None
,
validate
=
True
,
reconnect_on
=
(
200
,
''
,
408
)):
"""
Write to an open stream.
Once you've instantiated a 'Stream' object with a 'stream_id',
you can 'write' to it in real time.
positional arguments:
trace - A valid plotly trace object (e.g., Scatter, Heatmap, etc.).
Not all keys in these are `stremable` run help(Obj) on the type
of trace your trying to stream, for each valid key, if the key
is streamable, it will say 'streamable = True'. Trace objects
must be dictionary-like.
keyword arguments:
layout (default=None) - A valid Layout object
Run help(plotly.graph_objs.Layout)
validate (default = True) - Validate this stream before sending?
This will catch local errors if set to
True.
Some valid keys for trace dictionaries:
'x', 'y', 'text', 'z', 'marker', 'line'
Examples:
>>> write(dict(x=1, y=2)) # assumes 'scatter' type
>>> write(Bar(x=[1, 2, 3], y=[10, 20, 30]))
>>> write(Scatter(x=1, y=2, text='scatter text'))
>>> write(Scatter(x=1, y=3, marker=Marker(color='blue')))
>>> write(Heatmap(z=[[1, 2, 3], [4, 5, 6]]))
The connection to plotly's servers is checked before writing
and reconnected if disconnected and if the response status code
is in `reconnect_on`.
For more help, see: `help(plotly.plotly.Stream)`
or see examples and tutorials here:
http://nbviewer.ipython.org/github/plotly/python-user-guide/blob/master/s7_streaming/s7_streaming.ipynb
"""
stream_object
=
dict
()
stream_object
.
update
(
trace
)
if
'type'
not
in
stream_object
:
stream_object
[
'type'
]
=
'scatter'
if
validate
:
try
:
tools
.
validate
(
stream_object
,
stream_object
[
'type'
])
except
exceptions
.
PlotlyError
as
err
:
raise
exceptions
.
PlotlyError
(
"Part of the data object with type, '{0}', is invalid. "
"This will default to 'scatter' if you do not supply a "
"'type'. If you do not want to validate your data objects "
"when streaming, you can set 'validate=False' in the call "
"to 'your_stream.write()'. Here's why the object is "
"invalid:
\n
\n
{1}"
.
format
(
stream_object
[
'type'
],
err
)
)
if
layout
is
not
None
:
try
:
tools
.
validate
(
layout
,
'Layout'
)
except
exceptions
.
PlotlyError
as
err
:
raise
exceptions
.
PlotlyError
(
"Your layout kwarg was invalid. "
"Here's why:
\n
\n
{0}"
.
format
(
err
)
)
del
stream_object
[
'type'
]
if
layout
is
not
None
:
stream_object
.
update
(
dict
(
layout
=
layout
))
# TODO: allow string version of this?
jdata
=
_json
.
dumps
(
stream_object
,
cls
=
utils
.
PlotlyJSONEncoder
)
jdata
+=
"
\n
"
try
:
self
.
_stream
.
write
(
jdata
,
reconnect_on
=
reconnect_on
)
except
AttributeError
:
raise
exceptions
.
PlotlyError
(
"Stream has not been opened yet, "
"cannot write to a closed connection. "
"Call `open()` on the stream to open the stream."
)
def
close
(
self
):
"""
Close the stream connection to plotly's streaming servers.
For more help, see: `help(plotly.plotly.Stream)`
or see examples and tutorials here:
https://plot.ly/python/streaming/
"""
try
:
self
.
_stream
.
close
()
except
AttributeError
:
raise
exceptions
.
PlotlyError
(
"Stream has not been opened yet."
)
class
image
:
"""
Helper functions wrapped around plotly's static image generation api.
"""
@
staticmethod
def
get
(
figure_or_data
,
format
=
'png'
,
width
=
None
,
height
=
None
,
scale
=
None
):
"""Return a static image of the plot described by `figure_or_data`.
positional arguments:
- figure_or_data: The figure dict-like or data list-like object that
describes a plotly figure.
Same argument used in `py.plot`, `py.iplot`,
see https://plot.ly/python for examples
- format: 'png', 'svg', 'jpeg', 'pdf'
- width: output width
- height: output height
- scale: Increase the resolution of the image by `scale`
amount (e.g. `3`)
Only valid for PNG and JPEG images.
example:
```
import plotly.plotly as py
fig = {'data': [{'x': [1, 2, 3], 'y': [3, 1, 5], 'type': 'bar'}]}
py.image.get(fig, 'png', scale=3)
```
"""
# TODO: format is a built-in name... we shouldn't really use it
if
isinstance
(
figure_or_data
,
dict
):
figure
=
figure_or_data
elif
isinstance
(
figure_or_data
,
list
):
figure
=
{
'data'
:
figure_or_data
}
else
:
raise
exceptions
.
PlotlyEmptyDataError
(
"`figure_or_data` must be a dict or a list."
)
if
format
not
in
[
'png'
,
'svg'
,
'jpeg'
,
'pdf'
]:
raise
exceptions
.
PlotlyError
(
"Invalid format. This version of your Plotly-Python "
"package currently only supports png, svg, jpeg, and pdf. "
"Learn more about image exporting, and the currently "
"supported file types here: "
"https://plot.ly/python/static-image-export/"
)
if
scale
is
not
None
:
try
:
scale
=
float
(
scale
)
except
:
raise
exceptions
.
PlotlyError
(
"Invalid scale parameter. Scale must be a number."
)
payload
=
{
'figure'
:
figure
,
'format'
:
format
}
if
width
is
not
None
:
payload
[
'width'
]
=
width
if
height
is
not
None
:
payload
[
'height'
]
=
height
if
scale
is
not
None
:
payload
[
'scale'
]
=
scale
response
=
v2
.
images
.
create
(
payload
)
headers
=
response
.
headers
if
(
'content-type'
in
headers
and
headers
[
'content-type'
]
in
[
'image/png'
,
'image/jpeg'
,
'application/pdf'
,
'image/svg+xml'
]):
return
response
.
content
elif
(
'content-type'
in
headers
and
'json'
in
headers
[
'content-type'
]):
return
response
.
json
()[
'image'
]
@
classmethod
def
ishow
(
cls
,
figure_or_data
,
format
=
'png'
,
width
=
None
,
height
=
None
,
scale
=
None
):
"""Display a static image of the plot described by `figure_or_data`
in an IPython Notebook.
positional arguments:
- figure_or_data: The figure dict-like or data list-like object that
describes a plotly figure.
Same argument used in `py.plot`, `py.iplot`,
see https://plot.ly/python for examples
- format: 'png', 'svg', 'jpeg', 'pdf'
- width: output width
- height: output height
- scale: Increase the resolution of the image by `scale` amount
Only valid for PNG and JPEG images.
example:
```
import plotly.plotly as py
fig = {'data': [{'x': [1, 2, 3], 'y': [3, 1, 5], 'type': 'bar'}]}
py.image.ishow(fig, 'png', scale=3)
"""
if
format
==
'pdf'
:
raise
exceptions
.
PlotlyError
(
"Aw, snap! "
"It's not currently possible to embed a pdf into "
"an IPython notebook. You can save the pdf "
"with the `image.save_as` or you can "
"embed an png, jpeg, or svg."
)
img
=
cls
.
get
(
figure_or_data
,
format
,
width
,
height
,
scale
)
from
IPython
.
display
import
display
,
Image
,
SVG
if
format
==
'svg'
:
display
(
SVG
(
img
))
else
:
display
(
Image
(
img
))
@
classmethod
def
save_as
(
cls
,
figure_or_data
,
filename
,
format
=
None
,
width
=
None
,
height
=
None
,
scale
=
None
):
"""Save a image of the plot described by `figure_or_data` locally as
`filename`.
Valid image formats are 'png', 'svg', 'jpeg', and 'pdf'.
The format is taken as the extension of the filename or as the
supplied format.
positional arguments:
- figure_or_data: The figure dict-like or data list-like object that
describes a plotly figure.
Same argument used in `py.plot`, `py.iplot`,
see https://plot.ly/python for examples
- filename: The filepath to save the image to
- format: 'png', 'svg', 'jpeg', 'pdf'
- width: output width
- height: output height
- scale: Increase the resolution of the image by `scale` amount
Only valid for PNG and JPEG images.
example:
```
import plotly.plotly as py
fig = {'data': [{'x': [1, 2, 3], 'y': [3, 1, 5], 'type': 'bar'}]}
py.image.save_as(fig, 'my_image.png', scale=3)
```
"""
# todo: format shadows built-in name
(
base
,
ext
)
=
os
.
path
.
splitext
(
filename
)
if
not
ext
and
not
format
:
filename
+=
'.png'
elif
ext
and
not
format
:
format
=
ext
[
1
:]
elif
not
ext
and
format
:
filename
+=
'.'
+
format
img
=
cls
.
get
(
figure_or_data
,
format
,
width
,
height
,
scale
)
f
=
open
(
filename
,
'wb'
)
f
.
write
(
img
)
f
.
close
()
class
file_ops
:
"""
Interface to Plotly's File System API
"""
@
classmethod
def
mkdirs
(
cls
,
folder_path
):
"""
Create folder(s) specified by folder_path in your Plotly account.
If the intermediate directories do not exist,
they will be created. If they already exist,
no error will be thrown.
Mimics the shell's mkdir -p.
Returns:
- 200 if folders already existed, nothing was created
- 201 if path was created
Raises:
- exceptions.PlotlyRequestError with status code
400 if the path already exists.
Usage:
>> mkdirs('new folder')
>> mkdirs('existing folder/new folder')
>> mkdirs('new/folder/path')
"""
response
=
v2
.
folders
.
create
({
'path'
:
folder_path
})
return
response
.
status_code
class
grid_ops
:
"""
Interface to Plotly's Grid API.
Plotly Grids are Plotly's tabular data object, rendered
in an online spreadsheet. Plotly graphs can be made from
references of columns of Plotly grid objects. Free-form
JSON Metadata can be saved with Plotly grids.
To create a Plotly grid in your Plotly account from Python,
see `grid_ops.upload`.
To add rows or columns to an existing Plotly grid, see
`grid_ops.append_rows` and `grid_ops.append_columns`
respectively.
To delete one of your grid objects, see `grid_ops.delete`.
"""
@
classmethod
def
_fill_in_response_column_ids
(
cls
,
request_columns
,
response_columns
,
grid_id
):
for
req_col
in
request_columns
:
for
resp_col
in
response_columns
:
if
resp_col
[
'name'
]
==
req_col
.
name
:
req_col
.
id
=
'{0}:{1}'
.
format
(
grid_id
,
resp_col
[
'uid'
])
response_columns
.
remove
(
resp_col
)
@
staticmethod
def
ensure_uploaded
(
fid
):
if
fid
:
return
raise
exceptions
.
PlotlyError
(
'This operation requires that the grid has already been uploaded '
'to Plotly. Try `uploading` first.'
)
@
classmethod
def
upload
(
cls
,
grid
,
filename
,
world_readable
=
True
,
auto_open
=
True
,
meta
=
None
):
"""
Upload a grid to your Plotly account with the specified filename.
Positional arguments:
- grid: A plotly.grid_objs.Grid object,
call `help(plotly.grid_ops.Grid)` for more info.
- filename: Name of the grid to be saved in your Plotly account.
To save a grid in a folder in your Plotly account,
separate specify a filename with folders and filename
separated by backslashes (`/`).
If a grid, plot, or folder already exists with the same
filename, a `plotly.exceptions.RequestError` will be
thrown with status_code 409
Optional keyword arguments:
- world_readable (default=True): make this grid publically (True)
or privately (False) viewable.
- auto_open (default=True): Automatically open this grid in
the browser (True)
- meta (default=None): Optional Metadata to associate with
this grid.
Metadata is any arbitrary
JSON-encodable object, for example:
`{"experiment name": "GaAs"}`
Filenames must be unique. To overwrite a grid with the same filename,
you'll first have to delete the grid with the blocking name. See
`plotly.plotly.grid_ops.delete`.
Usage example 1: Upload a plotly grid
```
from plotly.grid_objs import Grid, Column
import plotly.plotly as py
column_1 = Column([1, 2, 3], 'time')
column_2 = Column([4, 2, 5], 'voltage')
grid = Grid([column_1, column_2])
py.grid_ops.upload(grid, 'time vs voltage')
```
Usage example 2: Make a graph based with data that is sourced
from a newly uploaded Plotly grid
```
import plotly.plotly as py
from plotly.grid_objs import Grid, Column
from plotly.graph_objs import Scatter
# Upload a grid
column_1 = Column([1, 2, 3], 'time')
column_2 = Column([4, 2, 5], 'voltage')
grid = Grid([column_1, column_2])
py.grid_ops.upload(grid, 'time vs voltage')
# Build a Plotly graph object sourced from the
# grid's columns
trace = Scatter(xsrc=grid[0], ysrc=grid[1])
py.plot([trace], filename='graph from grid')
```
"""
# Make a folder path
if
filename
[
-
1
]
==
'/'
:
filename
=
filename
[
0
:
-
1
]
paths
=
filename
.
split
(
'/'
)
parent_path
=
'/'
.
join
(
paths
[
0
:
-
1
])
filename
=
paths
[
-
1
]
if
parent_path
!=
''
:
file_ops
.
mkdirs
(
parent_path
)
# transmorgify grid object into plotly's format
grid_json
=
grid
.
_to_plotly_grid_json
()
if
meta
is
not
None
:
grid_json
[
'metadata'
]
=
meta
payload
=
{
'filename'
:
filename
,
'data'
:
grid_json
,
'world_readable'
:
world_readable
}
if
parent_path
!=
''
:
payload
[
'parent_path'
]
=
parent_path
response
=
v2
.
grids
.
create
(
payload
)
parsed_content
=
response
.
json
()
cols
=
parsed_content
[
'file'
][
'cols'
]
fid
=
parsed_content
[
'file'
][
'fid'
]
web_url
=
parsed_content
[
'file'
][
'web_url'
]
# mutate the grid columns with the id's returned from the server
cls
.
_fill_in_response_column_ids
(
grid
,
cols
,
fid
)
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