Sandbox/Trash Bin/Something

« first day (772 days earlier) ← previous day next day → last day (1393 days later) »

8:44 AM

-1

Q: NIntegrate gives a wrong result from mathematica

Here I want to compute this integral, w is infinity. IF I choose w=10 Gamm[k_, u_] := 2/(15Sqrt[Pi]) N[NIntegrate[ Exp[-Iks]s^(1/2 + 2)Exp[-s]Cos[f/2] Exp[-Sqrt[8su]/Cos[f/2]], {f, -Pi, Pi}, {s, 0, w}]; Table[Gamm[0, u], {u, 0, 0.1, 0.001}] Mathematica gives: Table[Gamm[0, u], {u, 0, 0.1, 0.001}]...

rene

9:02 AM

← 1 message moved from Data Explorer (SEDE)

12 hours later…

Feeds

8:38 PM

-1

Q: Hi Guys, I am trying add 2 new columns to the existing spark dataframe in python from 2 string variables. Please find the code below

I am getting this error :Parse yarn logs get error message: AssertionError: col should be Column Traceback (most recent call last): report_date_time = i[-24:][:-5].split('T') report_date = report_date_time[0] report_hour = report_date_time[1] df1 = df.withColumn("report_date", report_date).withCo...

bug data-explorer data-analysis softwareengineering-se database

Feeds

8:56 PM

Q: In Spring Data JPA, SUM operation for single day with date pattern DD:MM:YYYYTHH:MM:SS

In DB, i have '(Number of) ID' column and 'Date' column having date format as DD:MM:YYYYTHH:MM:SS. For e.g. ID Date 5 12.07.2020T11:11:43 7 11.06.2020T15:14:45 8 12.07.2020T11:14:45 6 11.06.2020T14:14:45 Using JPA (with Spring boot in Java), I want to calculate SU...