intervals

问题 I have a question that is very similar to algorithm to find longest non-overlapping sequences. The only difference to the linked question is that instead of finding the set of non-overlapping tuples that represent the longest sequence , I need to find the set of non-overlapping tuples that represent the maximum coverage , by which I mean the sum of the tuple lengths is maximum (a tuple length being last - first + 1 given the definition of tuple in the next sentence). I represent my tuples

问题 I have a navigation that, when one of it's nav items is clicked, will use jQuery to change it's z-index to 0. Then, after 2 seconds, I would like the z-index to be changed to 2. I tried using delay() but apparently that doesn't work when changing the CSS. 回答1: Use a setTimeout like this $(elem).css('z-index','0'); setTimeout(function(){ $(elem).css('z-index','2'); },2000) 回答2: In javascript you can use either setTimeout or setInterval to accomplish that setTimeout("javascript statement"

问题 My sync adapter does work perfectly well except for one little thing which bugs the sh*t out of me for the last few hours... For my app i want the sync adapter to run with an interval of 10 seconds. ContentResolver.addPeriodicSync(mAccount, AUTHORITY, Bundle.EMPTY, 5); What happens is that the sync starts every 60 seconds instead of the requested 5 seconds. When i change the interval to 70 seconds then the sync starts every 70 seconds. From the log file: W/ContentService﹕ Requested poll

问题 I have a question about creating vectors. If I do a <- 1:10 , "a" has the values 1,2,3,4,5,6,7,8,9,10. My question is how do you create a vector with specific intervals between its elements. For example, I would like to create a vector that has the values from 1 to 100 but only count in intervals of 5 so that I get a vector that has the values 5,10,15,20,...,95,100 I think that in Matlab we can do 1:5:100 , how do we do this using R? I could try doing 5*(1:20) but is there a shorter way?

问题 I have a data sample which looks like this: a 10:15:22 10:15:30 OK b 10:15:23 10:15:28 OK c 10:16:00 10:17:10 FAILED b 10:16:30 10:16:50 OK What I want is to plot the above data in the following way: captions ^ | c | *------* b | *---* *--* a | *--* |___________________ time > With the color of lines depending on the OK/FAILED status of the data point. Labels ( a/b/c/... ) may or may not repeat. As I've gathered from documentation for gnuplot and matplotlib , this type of a plot should be

问题 I'm refactoring a function that, given a series of endpoints that implicitly define intervals, checks if a number is included in the interval, and then return a corresponding (not related in any computable way). The code that is now handling the work is: if p <= 100: return 0 elif p > 100 and p <= 300: return 1 elif p > 300 and p <= 500: return 2 elif p > 500 and p <= 800: return 3 elif p > 800 and p <= 1000: return 4 elif p > 1000: return 5 Which is IMO quite horrible, and lacks in that both

问题 I am trying to create a Google Map where the user can plot the route he walked/ran/bicycled and see how long he ran. The GPolyline class with it’s getLength() method is very helpful in this regard (at least for Google Maps API V2), but I wanted to add markers based on distance, for example a marker for 1 km, 5 km, 10 km, etc., but it seems that there is no obvious way to find a point on a polyline based on how far along the line it is. Any suggestions? 回答1: Having answered a similar problem a

问题 I'm building a chart and I want to receive data for each month. Here's my first request which is working: SELECT s.GSP_nom AS nom, timestamp, AVG( v.vote + v.prix ) /2 AS avg FROM votes_serveur AS v INNER JOIN serveur AS s ON v.idServ = s.idServ WHERE s.valide =1 AND v.date > CURDATE() -30 GROUP BY s.GSP_nom ORDER BY avg DESC But, in my case I've to write 12 request to receive data for the 12 previous months, is there any trick to avoid writing: // example for the previous month AND v.date >

问题 This question already has an answer here : indicateing to which interval a date belongs (1 answer) Closed 11 months ago . hi i have data from uber : about pick ups in NYC . im trying to add a column to the raw data, that indicates for each row, for which time interval (which is represented by a single timepoint at the beginning of thetime interval) it belongs. i want to Create a vector containing all relevant timepoints (i.e. every 15 minutes Use int_diff function from lubridate package on

问题 I have a table session_dates with some fields and a timestamp field named timestart . What I would like to do is select all the records from my table where the field timestart (TIMESTAMP) is equal to 21 days from now . Like for example if today is 27 januari -> 17 februari . I know how I can select all between two dates. My SQL Query for between 2 dates: SELECT timestart, timefinish, sessionid FROM sessions_dates WHERE timestart BETWEEN UNIX_TIMESTAMP(NOW()) AND UNIX_TIMESTAMP(DATE_ADD(NOW(),