data frames are now pickled instead of csv to conserve types

docker/config/nginx/html/demo.html

@@ -34,8 +34,8 @@
 
   const fjs = fractal.init({
     handler: 'demo',
-    dataSource: 'https://' + window.location.host,
-    fractalisNode: 'http://' + window.location.host,
+    dataSource: location.protocol + '//' + window.location.host,
+    fractalisNode: location.protocol + '//' + window.location.host,
     getAuth () {
       return {token: ''}
     },

fractalis/analytics/task.py

@@ -7,7 +7,7 @@ import logging
 from uuid import UUID
 from typing import List, Tuple, Union
 
-from pandas import read_csv, DataFrame
+from pandas import read_pickle, DataFrame
 from celery import Task
 from Cryptodome.Cipher import AES
 
@@ -99,7 +99,7 @@ class AnalyticTask(Task, metaclass=abc.ABCMeta):
         if decrypt:
             return self.secure_load(file_path)
         else:
-            df = read_csv(file_path)
+            df = read_pickle(file_path, compression='gzip')
         return df
 
     @staticmethod

fractalis/data/etl.py

@@ -152,7 +152,7 @@ class ETL(Task, metaclass=abc.ABCMeta):
         :param file_path: File to write to.
         """
         os.makedirs(os.path.dirname(file_path), exist_ok=True)
-        data_frame.to_csv(file_path, index=False)
+        data_frame.to_pickle(file_path, compression='gzip')
 
     def run(self, server: str, token: str,
             descriptor: dict, file_path: str,

fractalis/data/etls/demo/demo_etl_categorical.py

@@ -11,7 +11,7 @@ class CategoricalETL(ETL):
     """CategoricalETL implements support for the
     categorical data of the wine quality data set. """
 
-    name = 'demo-wine-quality-etl'
+    name = 'demo-wine-quality-categorical-etl'
     produces = 'categorical'
 
     @staticmethod

fractalis/data/etls/demo/demo_etl_numerical.py

@@ -11,7 +11,7 @@ class NumericalETL(ETL):
     """NumericalETL implements support for the
     numerical data of the wine quality data set. """
 
-    name = 'demo-wine-quality-etl'
+    name = 'demo-wine-quality-numerical-etl'
     produces = 'numerical'
 
     @staticmethod