Webwhere df is a dataframe containing an index that is a date, and at least (but not only) the following attributes: open, high, low, close, volume. I then output the newly created array as JSON with flask's jsonify. The code above works but it looks pretty inefficient to me any idea on how to make it nicer/more efficient. WebJun 20, 2024 · y_pred is predictions for random set from the original dataframe y_pred is an array. I understand you want to keep index from original dataframe. To do this I think you need to make old dataframe index a column, and then keep old dataframe series y_pred as dict or dataframe, not an array.

python - arrays into pandas dataframe columns - Stack Overflow

WebPandas dataframe to 1-d array. I have a dataframe with lots of columns. I first choose only one column from the dataframe by r_i = df.iloc [:, i: i + 1] Then I want to turn this r_i into array simply by np.array (r_i). the result I want is like: array ( [-1, -2, -3]). In other words, it should be array of one list. can someone cash a stolen cashier\u0027s check

Convert a NumPy array to Pandas dataframe with headers

WebApr 5, 2024 · If the result of result.toJSON().collect() is a JSON encoded string, then you would use json.loads() to convert it to a dict.The issue you're running into is that when you iterate a dict with a for loop, you're given the keys of the dict.In your for loop, you're treating the key as if it's a dict, when in fact it is just a string.Try this: # toJSON() turns each row … WebJun 25, 2024 · Before v0.24. Use pd.Series.values property: df.iloc [3].values # output 4th row as Numpy array. Just remember that if your dataframe contains multiple types, the dtype of the row-wise Numpy array may become object. This will lead to inefficiencies in subsequent operations. Share. Follow. edited Jan 30, 2024 at 12:08. WebAug 1, 2024 · I have a 4D numpy array of shape (4, 155, 240, 240). I would like to create a pandas DataFrame with one row for each element of this array, and five columns: one for each of the four indices, and one for the value in the … flaps top barbershop