q3c | PostgreSQL extension for spatial indexing on a sphere
kandi X-RAY | q3c Summary
kandi X-RAY | q3c Summary
Author: Sergey Koposov, University of Edinburgh. Copyright (c) 2004-2021 Sergey Koposov. Email: skoposov AT ed DOT ac DOT uk. Fresh versions of the software could be obtained here: To read more about the Q3C indexing, you can check out the paper published in ADASS conference proceedings The citation is "Koposov, S., & Bartunov, O. 2006, Astronomical Society of the Pacific Conference Series, 351, 735". Q3C is also registered in the ASCL library . If you use Q3C, you are kindly asked to cite the 2006 paper. I am also always happy to hear about any usage of Q3C.
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of q3c
q3c Key Features
q3c Examples and Code Snippets
Lines of Code : 49License : Strong Copyleft (GPL-2.0)
Copymy_db# SELECT * FROM mytable WHERE q3c_radial_query(ra, dec, 11, 12, 0.1);
my_db# SELECT * FROM mytable WHERE q3c_join(11, 12, ra, dec, 0.1);
my_db=# select * from mytable WHERE
q3c_ellipse_query(ra, dec, 10, 20, 1, 0.5 ,10);
my_db# SELECT * FR with x as (select * from t1 where t1.mag<1)
y as (select *, t2.mag as t2mag from x, t2 where q3c_join(t1.ra,t1.dec,t2.ra,t2.dec,1./3600) )
select * from y where t2mag>33
Community Discussions
Trending Discussions on q3c
QUESTION
ANSWER
Answered 2020-Oct-26 at 01:59We can use grep to identify the columns and use it in split.default to create list of similarly named columns. We can paste the values rowwise for each element in list.
QUESTION
I have survey data which annoying has returned multiple choice questions in the following way. It's in an excel sheet There is about 60 columns with responses from single to multiple that are split by /. This is what I have so far, is there any way to do this quicker without having to do this for each individual column
...ANSWER
Answered 2020-Oct-19 at 17:00We can use list comprehension with add_prefix, then we use pd.concat to concatenate everything to your final df:
QUESTION
I'm playing around with a javascript quiz but I'm having trouble showing the results. I would like the user to see the correct results when the user clicks on "Submit Answers" but nothing happens.
This is my HTML code:
...ANSWER
Answered 2020-Apr-12 at 13:15Instead of adding onsubmit property directly in form element, add submit event listener on it and prevent the event from default behavior. Default behavior of submitig a form is refreshing whole page.
QUESTION
My code is as below: I am trying to insert into my database with multiple inserts at once with a mysqli_query, how do I go about it?
...ANSWER
Answered 2017-Jul-24 at 12:19Just try with this Query:
QUESTION
I am very new to javascript and started to work on a quiz. When the submit button is clicked I want the checked (false) radio button turns to i.e. "black" I tried to read forums however i have not found anything related to this issue. My last try is the last line of the JS
Hope you can help me. Here is my stuff ( i know it could be simpler ) : the problematic part starts at line 51. https://jsfiddle.net/av0txkco/
...ANSWER
Answered 2019-Oct-15 at 17:37Regrettable, the looks of the radio button is dependent of the browser. There is a limit of what you can do.
However, there are ways around it. For example, below, I am hiding the radio button (to keep the regular functionality); however, I am displaying some icons instead.
To make it easier to understand and go directly to the point, I am using jQuery and FontAwesome but you can use whatever you want instead.
QUESTION
I'm trying to create a quiz form with these types of input:
...ANSWER
Answered 2018-May-19 at 15:05Try this:
QUESTION
I am developing a quizz application in vanilla JavaScript and in the interest of best practices, I want to ensure I follow the D.R.Y. principle.
I have five questions that I need to check answers for.
As a result, instead of using if statements five times, I thought I could implement a switch statement like so:
callback.js:
...ANSWER
Answered 2018-Jan-07 at 16:56The switch value must match one of the case expressions. answers will never match q1 == answers[0] or similar. If you changed it to switch (true) the switch would work, but you'd still only be checking one answer, not all five (and it's not a very good use of switch).
If you use five different qX variables, you'll need five different if statements. But that's not what you should do. Instead, see *** comments:
QUESTION
I am new to javaScript and am confused on how I should get the total from the checked radio boxes. Also I am trying to add a submit button for the user, so that the total will only be revealed after they click submit. I feel as though I may not be parsing the values properly?
Appreciate the help Thanks!
...ANSWER
Answered 2017-Sep-18 at 15:35What you want to do is to get your checkboxes as arrays, not create some unrelated arrays yourself. That can be done using document.getElementsByName("q1");
QUESTION
I have a list of questions in HTML. Each question will have 4 radio buttons for the answers, and the user will select the appropriate answer. Each radio button has an assigned value. At the end, I would like to show in HTML, the user's score once the questions have all been answered.
It's fairly straight forward, but I am having issues iterating through the questions and returning a summing the total value for their score.
Any suggestions on the iterating jQuery loops would be helpful.
...ANSWER
Answered 2017-Apr-13 at 04:05You can get total score usong this.
QUESTION
https://jsfiddle.net/boriskay/thsmdqrt/3/
In the JS code you can see that the text input questions are validated through an array of objects, but this method doesn't work for the dropdown question(the correct answer is "Botas").
How can I validate the correct answer?
Thank you in advance.
HTML:
...ANSWER
Answered 2017-Jan-08 at 19:10Your .each loop is selecting this:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install q3c
make
make install
Execute "CREATE EXTENSION q3c" in the PostgreSQL client(psql) for the database where you plan to use q3c
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page
