I have a Quiver Analysis page containing many time series. I build these time series using functions combining other time series data and variables. One of the time series does not update it’s information that frequently, however I want the graph to project all the way to the current day. How can I do that?
You need to make sure that the interpolation settings on all of the component time series are set so that the "after" category is nearest instead of None
Remember to also set the interpolation settings for any variables that this time series is based off of.
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I am writing because I found no public documentation or code to solve this doubt. I have been using the AlphaVantage APIs for a project about stock markets prediction with Machine Learning. I have been using a lot of technical indicators of the AlphaVantage library, and, many of them use sequences (windows) of data points, rolling them (e.g. Moving Averages).
However, many financial libraries tend to update the values they previously computed for some of these indicators, by using windows retaining future information with respect to the point in time the indicator is referred to. Obviously, that would represent an "hidden" information that a predictive system (only relying either on past or present information), like mine, should not have access to.
Hence, I was wondering if it is the same case for the AlphaVantage library. I personally manually checked a lot of indicators referred to the same stock (and I repeated the process for many stocks), at a distance of days, and I did not find any inconsistencies on the values referred to the common dates (the only difference is that the most recent versions of those technical indicators have new points, referred to the new evolutions of the price in time).
I would be very pleased, if anybody of you could help me in solving this.
Most indicators will use a look back window of quote values, including current price, to calculate current indicator values. Many will also include previously calculated indicator values as a basis for current indicator values. Fewer even recalculate older indicator values based on new price information.
For this last scenario, in looking at the AlphaVantage library, I don’t see any in there that would recalculate older indicator values based on newer data. If you’re seeing indicator values change, it’s probably due to a revision or updates of their underlying quote history.
I have a rather large .NET library of indicators, so I’m familiar with which kinds behave that way, due to the mathematics.
Some examples of indicators with retroactive recalculation are ZigZag and Williams Fractal. The reason they do this is because they find local high and low points, which can’t be verified without several confirming bars of data. In other words, you cannot indicate a high point until several lower bars occur thereafter.
We are using grafana to display graphs over OpenTSDB for our performance test results, so we have a use case in which we would like to compare a test metrics with benchmark results or different timestamp, so is there a way we can compare?
i know it is possible with Grafite datasource using timeshift function but now sure about OpenTSDB.
You can try this plugin "graph-compare-panel". It's very easy to use, but it only support some versions of Grafana .
It looks like there is a timeshift function for OpenTSDB. The issue for the timeshift feature request has been closed and this commit adds the timeShift/shift function.
On the other hand, the function is undocumented and there is an open issue where it doesn't seem to work.
On a related note, this is fairly easy to accomplish in ATSD which supports opentsdb protocol and provides a storage plugin for Grafana.
https://axibase.com/products/axibase-time-series-database/visualization/widgets/baselines/
time-offset = 1 week
Here's another example, a bit more artistic:
A more advanced example is to overlay multiple series using a relative elapsed time. Don't know if this is relevant for your use case, but we're working on it.
Disclaimer: I work for the company developing Axibase Time Series Database.
I've searched and found a couple of online web services that do this, but I was wondering it there's a database in the public domain which gives a list of latitudes and longitudes for the standard time zone lines? I'd like to be able to calculate what time zone a coordinate is without using a web service. I figured that time zone boundaries are mostly static and were probably decided by some committee, so there should be a CSV or GPX or KML somewhere.
I'd like to be able to check what time zone a coordinate lies in, for example:
48.856667 2.350833 is GMT+1 or CET
This is a series of files -- timezone polygons (shapefile), which you can transform into boundaries. With work on your part.
http://efele.net/maps/tz/world/
You should note that simply knowing the TZ does not guarantee that you know anything about the current correct time or date there in terms of the local calendar. Time Ex: The Isreali Knesset (parliament) decides when Daylight time starts and ends - sometimes they have chosen a date in the past. Date Ex: The Hijri Calendar changes months based on the ability of people in Mecca to actually observe the new moon from there. Cloudy days alter the date.
Askgeo.com has a Java library under commercial license. (Scroll down their page to find information about it). They charge 2 grand up front for it though, considering the amount of work they must have put in compiling loads of vector maps, etc, I can understand they want the money.
I use their free API, but you wanted something downloadable, and I think this is one of your few bets.
I tried openstreetmap and they have the data, but it would be buried in a map of Earth, not completely useful itself. Here is one on Wikipedia though: http://en.wikipedia.org/wiki/List_of_tz_database_time_zones
I recently found this data here:
https://github.com/straup/whereonearth-timezone
I'm looking for suggestions/examples of tools or APIs that enable the mapping of large amounts of time series data into an intensity map.
The data includes dimensions for country, series, and year. Here's an example http://spreadsheets.google.com/ccc?key=t9ZwziZAgy768ZTXDEg8Maw&authkey=CPn0pdoH&hl=en_GB&ui=1
UUorld is a good choice if you want to create videos that show data changing over time. They're heavy on the 3-D, but I found some examples of what appear to be 2-D intensity maps in the gallery. The trial version is free and does not expire.
For static images, I love indiemapper. It's very simple to use and has beautiful color palettes and typography options. It also has 16 different map projections, if you're into that. The free trial is 30 days.
The caveat with these (and other mapping software) is that you may have to convert your data into a certain format, depending on what it is now. For example, indiemapper takes shapefiles, KML, and GPX as input.
Try GeoCommons, you would need to reformat your spreadsheet a bit, but once you get it in there you can join to country boundaries, creat an interactive temporal map, and embed it wherever you want. everything is web based so no need to download anything.
With JIRA, there are features that allow you to Start Progress and Stop Progress on an issue or various issues at any given time. Is there a way for me to go back and see a chart or a graphical representation of how my time was spent over a set period of time?
If I wanted to see how many bugs I worked on in April, and see how much time (graphically) was spent on each bug, could that be done, and if so, which version of JIRA would allow me to do that?
I dont think you can see for a given month how much time was spend on a task. You can see how much time was spent on a task, but not what time period it was for.
I'm sure you've already seen this:
http://www.atlassian.com/software/jira/docs/v3.13.3/timetracking_report.html
There's a Time Sheet Summary report that comes with the Timesheet Report and Portlet plugin - it shows you a list of the JIRA issues you've been working on together with the time per day for a configurable period. No charts, though, I'm afraid.
I think in general that time tracking is ripe for someone to write a really good JIRA plugin; I'm not totally happy with any of the current ones.
Go with the Tempo plug-in for jira. It is brilliant.
You can implement this visualization with the JIRA PDF View Plugin, like this:
Create a filter that returns the issues to be used for this visualization. Run it and invoke the plugin from the "View" dropdown menu.
Write a little Groovy script that iterates over the returned collection of issues, and:
Builds a mapping from "month" (key) to a data structure which holds a triplet of "totalTimeSpent, issuesWorkedOn, issuesFixed" (value).
At each issue compute the sum of the "time spent" records and add it to "totalTimeSpent".
Increment the two other counters accordingly.
When your script completes you have all input data to draw a timeseries chart.
Generate a JFreeChart TimeSeriesCollection dataset. It should contain 3 TimeSeries (3 lines) for the 3 types of values.
Create a simple PDF template that displays a single timeseries chart, which takes the dataset returned by the previous script to render a timeseries chart. Check the timeseries chart example in the tutorial for directions.
The final chart will be something like this:
Disclaimer: this is a paid add-on for JIRA, and I'm a developer working on it.