python - How to convert wide to long format with hourly values and datetime index? -


I am retrieving data from a certain SQL schema in the long format and want to convert it to a wider format.

As a complexity, every row in the dataframe represents the value of a product for one day. Values ​​are stored in columns, indicating special hours of the day. The example below shows an interval length of six hours. This means that we store four values ​​per day at 00:00, 06:00, 12:00 and 18:00. The dataframe looks like this: 

  ID date 0000 0600 1200 1800 0 APPL 01.012014 12 15 17 1 9 APPL 02.01.2014 21 23 25 27 2 MSFT 01.01.2014 1 2 3 4 3 msft 02.01.2014 5 6 7 8

I want to receive, datafram is in a broader format: 

  APPL MSF 2014-01-01 00 00:00 12 1 2014-01-01 06:00:00 15 2 01-01-2010 12:00: 00 17 3 2014-01-01 18:00:00 19 2014-01-02 00:00: 00 21 5 2014-01-02 06:00:00 23 6 2014-01-02 12:00:00 25 7 2014-01-02 18:00:00 27 8

To achieve the goal structure, I have a variety of pivot, un / stack and set_ indix N tried combinations but failed I The closest I have been able to use it: 

  df = src.set_index ([ 'date', 'id']). Stack ()

Returns: 

  Date ID 01.01.2014 APPL 0000 12 0600 15 1200 17 1800 1 9 02.01.2014 APPL 0000 21 0600 23 1200 25 1800 27 01.01.2014 MSFT 0000 1 0600 2 1200 3 1800 4 02.01.2014 MSFT 0000 5 0600 6 1200 7 1800 8

But I am not able to solve the multi index .

Any help is highly appreciated. 

  import as import pandas PD import io text = "" "ID date 0000 0600 1200 1800 APPL 01.01.2014 12 15 17 1 9 APPL 02.01.2014 21 23 25 27 2 MSFT 01.01.2 014 1 2 3 4 3 MSFT 02.01.2014 5 6 7 8 "" "df = pd.read_csv (io .bitsIO (text), delim_whitespace = true) df = df.set_index (["id", "date"]) (stop) (0) def (key): date, hour = key time = "{} {} : {}: 00 ". Format (date, hour [: 2], hour [2:]) returns pd.to_datetime (time, day first = true) df.index = df.index.map (f) print df
< P> Output: 

  id APPL MSFT 2014-01-01 00:00:00 12 1 2014-01-01 06:00:00 15 2 2014-01-01 12:00: 00 17 3 2014-01-01 18:00:00 19 4 2014 -01-02 00:00:00 21 05 2014-01-02 06:00:00 23 6 2014-01-02 12:00:00 25 7 2014-01-02 18:00:00 27 8

-

Comments

Post a Comment

Popular posts from this blog

sqlite3 - UPDATE a table from the SELECT of another one -

I have the first table article where some data is missing. In the table, articles_tmp I have a part of the missing data. So I want to update the articles. Where the path path is data in articles_tmp.path where the path is not zero . With SQLite , it does not work: update article SET path = (SELECT at.path FROM Articles_tmp as AS, WHERE at.article_id = a.id and a.asp, the text is in the form and not on. It has been transmitted) where the path is null MS Access Along with, it works fine: Update Articles Join the Inner Articles at articles_tmp articles.id = articles_tmp.id SETP articles.path = articles_tmp.path Can anyone help? Sin CE SQL Server Syntax, which I provided, was not working, here this solution With whom I have come. A little modification of your original query, but with my "correlation" suggestion added. There is a SQL Bella for this: Here is the code: update article SET path = (SELECT path from articles_tmp AS T WHERE t.id
Read more

c# - Showing a SelectedItem's Property -

So I have enabled a rightclick option for my DataGrid. I want to display the only chosen property but it is not behaving like what I would like it to display my name and additional. Public category Paymentinfo {public int PaymentNo {get; Set; } Public string date {get; Set; } Public Double Pay {get; Set; } Public Double Principle {get; Set; } Public Double Interest {get; Set; } Public Double Balance {Received; Set; }} Private Zero MenuItem_OnClick (Object Sender, RoutedEventArgs e) {MessageBox.Show (AmortGrid.SelectedItem.ToString ()); } I'm trying to apply it without using a View Module! If I place a breakpoint where the messagebox and the recipient place it on selected ITEM, then this property will display the payment. A date-payment-principle-interest-balance is the only value that needs payment. Was hoping that it would be something like this MessageBox.Show (AmortGrid.SelectedItem.PaymentNo.ToString ()); When you call ToString () So you get the class typ
Read more

javascript - Render HTML after each iteration in loop -

I'm trying to gradually increase the font size of text on a web page. The code works in my place, although the new HTML / CSS does not render after every iteration of the loop and when all this is done, then display only the text of 100 px size. To see the text as if it is slowly zooming, I need to do this JavaScript is down because it is being used from a different file here is what I have ... < Pre> & lt; P class = "game-title" style = "font-size: 50px" & gt; Test & lt; / P & gt; Function sleep (milliseconds) {var start = new date (). GetTime (); For (var i = 0; i & lt; 1e7; i ++) {if ((new date). GetTime () - start) & gt; Milliseconds {break; CSS ('font-size', 'parseInt ($ (' game-title '). CSS (' font-size ')) + 1 + "pixels"); } While (parasont ($ ('# text'). Css ('font-size')) & lt; = 100) {sleep (1000); IncreaseSize (); Using CSS: Use of jQuery (sample):
Read more