#!/usr/bin/env python
# coding: utf-8

# # Convenience Methods for Exporting Plot to a File or File-Like Object
# 
# You can export figure created by `ggplot()` or `gggrid()` functions <br>
# to a vector or raster format using the following methods: 
# - `to_svg(path)`
# - `to_html(path, iframe)`
# - `to_png(path, scale)`
# - `to_pdf(path, scale)`
# 
# To save plot to a file on disc, specify the file' pathname in `path`. <br>
# To stream plot image to a file-like object, supply such object in the `path` parameter instead of a pathname.
# 

# In[1]:


import numpy as np
import io
from IPython import display
from lets_plot import *


# In[2]:


LetsPlot.setup_html()


# In[3]:


data = {'x': np.random.normal(size=100)}
p = ggplot(data, aes(x='x')) + geom_histogram()


# #### 1. Saving to a File
# 

# In[4]:


path = p.to_svg('lets-plot-images/hist.svg')


# In[5]:


display.SVG(path)


# #### 2. Wrighting to a Stream of In-Memory Bytes
# 

# In[6]:


stream = io.BytesIO()

p.to_svg(stream)


# In[7]:


display.SVG(stream.getvalue())