A Delta is a file that represents the changes between two or more revisions of structured or semi-structured data. Use delta-lake tag for questions about Delta Lake file format.
References
Questions tagged [delta]
312 questions
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votes
0 answers
Building/calling librsync on Windows from Delphi 2010
I'm currently using the rdiff windows port from my delphi 2010 application to calculate delta/signature for remote delta/diff
I'm trying to explore the possibility of using the librsync library instead of rdiff, I googled & read a lot, I found these…
TheDude
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votes
1 answer
Algorithm to Combine Text Deltas into Single 'Superstring'
I'm writing software to track the changes an author made over several editions of a book. I already wrote code that produces a set of deltas describing differences between two editions.
Now I'm looking for an algorithm to combine all of these diffs…
maxhawkins
- 878
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votes
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Adding Footnotes (or margin notes etc.) to The Quilljs Editor
I'm looking for a way to add footnote / endnote functionality to the QuillJS.com editor. My requirements are that the note 'text' itself can still be edited as if it were document text -- hiding it away in an attribute is probably not going to work…
user2449525
- 158
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GPS delta coordinates to meters
Greetings,
I have two coordinates:
(52.4412396, -6.563223)
and
(52.8912397, -6.683669)
The delta is:
(-0.4499999, 0.120446)
The distance moved is:
sqrt((-0.4499999)^2+(0.120446)^2)
=.465840261
How do I convert this to meters?!
I hope someone…
Eamorr
- 9,872
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3
votes
2 answers
Using google protobuffer for delta messages
I am looking into using Google Protobuffers for delta messaging. Meaning I only want to send out the changed values of my domain object.
But that exposes a problem with the protocol for this purpose. I can easily just omit the properties that have…
Jay Pete
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3
votes
1 answer
Duration to Seconds in Pandas
How can i a Series like this:
2016-11-09 00:07:00 0 days 00:00:15.000000000
2016-11-09 00:07:15 0 days 00:20:14.000000000
2016-11-09 00:07:30 0 days 10:00:15.000000000
into in integer values like this:
2016-11-09 00:07:00 15
2016-11-09…
kolja
- 505
- 7
- 24
3
votes
2 answers
How to merge base and multiple delta structured streams in Azure DataLake
I have a base stream and I have multiple delta streams for different consecutive dates. I want to merge them to get the final stream. How can I accomplish this in Azure Datalake. For example assume these are the stream. I need to merge these streams…
user2580488
- 73
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votes
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how to define a 2d discrete delta function that can take array input in matlab
function y = dd2(x1,x2)
y=0;
if x1==0 && x2==0
y=1;
end
This would not work because the input cannot be an array.
I hope to make it can work for an array X of 1*m, and an array Y of 1*n
so when you dd2(X,Y) it creates a m*n matrix with 1 at the…
diodeBucks
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votes
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Limit while loop to run at 30 "FPS" using a delta variable C++
I basically need a while loop to only run at 30 "FPS".
I was told to do this:
"Inside your while loop, make a deltaT , and if that deltaT is lesser than 33 miliseconds use sleep(33-deltaT) ."
But I really wasn't quite sure how to initialize the…
Joe Bid
- 465
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3
votes
3 answers
(Delta time) Getting 60 updates a second in java
I've seen this code several times.
long lastTime = System.nanoTime();
final double ticks = 60D;
double ns = 1000000000 / ticks;
double delta = 0;
The code above takes the System time and stores it to lastTime. The 60 ticks should equate to the…
Shadow
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votes
2 answers
Approximately syntax checking Perl code, faster than perl -c
Is there a way to syntax check a Perl program without running perl? The well-known answer is 'no'. Without starting the full perl runtime to evaluate code
for imports, etc, you cannot tell whether program syntax is correct.
But what about if you…
Ed Avis
- 1,350
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votes
2 answers
Efficient data structure and strategy for synchronizing several item collections
I want one primary collection of items of a single type that modifications are made to over time. Periodically, several slave collections are going to synchronize with the primary collection. The primary collection should send a delta of items to…
haste
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Drupal 7 using different themes on pages using omega and delta
Can I use different sub themes on different pages. I have created two omega sub themes - Theme 1 (set as default) and Theme 2. Can I now assign Theme 2, to a set pages using the delta and context module? I created a delta theme based on Theme 2,…
Vinita Agarwal
- 63
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votes
1 answer
Transmit the binary diff(delta) of a file over http and merge the diff on the server
Basically i need to find out the binary diff of a file (client and server) and then transmit the diff(delta) over HTTP and then merge the diff(delta) to the file.
Is there any tool for this?
One more requirement is that it should work on all…
Kaarthik
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votes
4 answers
Minimal Difference Patch Algorithm
I'm trying to convey the difference between two bytestreams. I want to minimize the number of bytes in the patch.
(I don't necessarily want to minimize the number of "changes" in the diff, which is what the optimal patch in a levenshtein distance…
user1435114
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