xdelta | source binary diff , delta/differential compression tools | Compression library
kandi X-RAY | xdelta Summary
kandi X-RAY | xdelta Summary
Xdelta version 3 is a C library and command-line tool for delta compression using VCDIFF/RFC 3284 streams.
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QUESTION
I was able to scale in scale out x axis and y axis , Its working very good with arrow keys , I want to do that with touchpad aswel.I tried this below code ,its working but its not smooth .Sometimes when i zoom in X , its even zooming in Y and vice versa. window.addEventListener('mousewheel', function(e) {
...ANSWER
Answered 2021-Jun-06 at 20:15I found a quite interesting example of multi-touch trackpad gestures in JavaScript.
The code snippet below utilizes this for overriding LCJS chart interactions for trackpad. To me it seems to perform in a surprisingly intuitive manner for zooming in/out on pinch interaction (2 fingers, move to opposite directions) and panning with dragging 2 fingers in same direction.
I did not find any way to differentiate pinch interaction along X and Y separately, it seems that the JS events just get a single value for both, which is assigned to deltaY.
QUESTION
I am interested in reproducing average marginal effects from a random effects logit model (run in Stata using xtlogit). I understand how to reproduce the average marginal effects from a logit model using the Delta method. For instance, in the code below, I successfully reproduce the average marginal effect for age reported in margins.
ANSWER
Answered 2020-Nov-04 at 09:09There are a couple of ways to do this, but essentially the problem boils down to the fact
$$\Pr(y_{it}=1 \vert x_{it})=\int\Lambda(u_i + x_{it}'\beta)\cdot \varphi(0,\sigma_u^2) du_i$$
where $\varphi()$ is the normal density. In your code, you are effectively setting the random effect $u_i$ to zero (which is what predict(pu0) does). This sets the RE to its average, which may not be what you had it mind. Of course, $u_i$ is not observed or even estimated by xtlogit, re, so if you want to replicate what predict(pr) does, you need to integrate the random effect out to get the unconditional probability using the estimated variance.
One way to do this in Stata is to use the user-written integrate command to do one dimensional numerical integration like this:
QUESTION
I have to compare using Spark-based big data analysis data sets (text files) that are very similar (>98%) but with very large sizes. After doing some research, I found that most efficient way could be to use delta encoders. With this I can have a reference text and store others as delta increments. However, I use Scala that does not have support for delta encoders, and I am not at all conversant with Java. But as Scala is interoperable with Java, I know that it is possible to get Java lib work in Scala.
I found the promising implementations to be xdelta, vcdiff-java and bsdiff. With a bit more searching, I found the most interesting library, dez. The link also gives benchmarks in which it seems to perform very well, and code is free to use and looks lightweight.
At this point, I am stuck with using this library in Scala (via sbt). I would appreciate any suggestions or references to navigate this barrier, either specific to this issue (delata encoders), library or in working with Java API in general within Scala. Specifically, my questions are:
Is there a Scala library for delta encoders that I can directly use? (If not)
Is it possible that I place the class files/notzed.dez.jar in the project and let sbt provide the APIs in the Scala code?
I am kind of stuck in this quagmire and any way out would be greatly appreciated.
...ANSWER
Answered 2020-Oct-24 at 10:14There are several details to take into account. There is no problem in using directly the Java libraries in Scala, either using as dependencies in sbt or using as unmanaged dependencies https://www.scala-sbt.org/1.x/docs/Library-Dependencies.html: "Dependencies in lib go on all the classpaths (for compile, test, run, and console)". You can create a fat jar with your code and dependencies with https://github.com/sbt/sbt-native-packager and distributed it with Spark Submit.
The point here is to use these frameworks in Spark. To take advantage of Spark you would need split your files in blocks to distribute the algorithm across the cluster for one file. Or if your files are compressed and you have each of them in one hdfs partition you would need to adjust the size of the hdfs blocks, etc ...
You can use the C modules and include them in your project and call them via JNI as frameworks like deep learning frameworks use the native linear algebra functions, etc. So, in essence, there are a lot to discuss about how to implement these delta algorithms in Spark.
QUESTION
I have a MeasurementData type that looks like this.
ANSWER
Answered 2020-Oct-20 at 11:41Uh, this is kind of a nightmare type. It is sort of almost possible, but I beg you to refactor your data type to make use of arrays instead of an increasingly long list of property keys with numbers inside the name of the key. But I enjoy making TypeScript do terrible things, so here goes:
You want MeasurementData to be the infinite union of all versions of the structure for the different numbers of y properties. Like MeasurementDataElement<0> | MeasurementDataElement<0 | 1> | MeasurementDataElement<0 | 1 | 2> | MeasurementDataElement<0 | 1 | 2 | 3> | ....
You can't really do infinite unions. You can either do it as a generic constraint, or as a union of up to some finite number. I'm going to do the latter and pick, say, 40, so you can support y0 through y39.
Because this involves string concatenation and recursion, I'll be using the TypeScript 4.1 beta. TypeScript 4.1 will support template literal types and mapped type key augmentation as well as recursive conditional types:
QUESTION
I am try to solve OOP Java problems and I reached a class named "Ball", The class is easy to design but I have problem that is how to get xDelta and yDelta so I can add them to initial x and y to get the position of the ball after moving it?
Now I wrote this code but the xDelta and yDelta are wrong. What is the need for speed and direction in the constructor?
This is the class diagram:
This is the class code:
...ANSWER
Answered 2020-Jul-19 at 00:56Let direction be the direction of the ball flight in degrees (0 to 360).
Add this to your constructor.
QUESTION
I would like to make a regression loop lm(y~x) with a dataset with one y and several x, and run the regression for each x, and then also store the results (estimate, p-values) in a data.frame() so I don't have to copy them manually (especially as my real data set it much bigger).
I think this should not be too difficult, but I struggle a lot to make it work and appreciate your help:
Here is my sample data set:
ANSWER
Answered 2020-Jul-13 at 13:33One option would be to use lapply to perform a regression with each of the independent variables. Use tidy from broom library to store the results into a tidy format.
QUESTION
I am trying to make a program (C#) which do this:
- If I click my left mouse button the mouse should move to the left by a DeltaX.
The problem is that when I run the program, it simple opens the console application and nothing happens. I am not sure what I am doing wrong here. It should keep running and checking if I click the left mouse button or not, and when I click it, the cursor should move to the left by a DeltaX.
code
...ANSWER
Answered 2020-May-09 at 05:47Some mistakes were in code, I've added some comments directly to code
QUESTION
I have designed this layout layout in which i have a NestdScrollView which contains 3 RecycleViews. On each RecycleView item click appears another NestedRecycleView appears with is inside ScrollView of height 200dp. NestedRecycleView scroll does not work. In the image there are more than 4 "list items" but only 4 are shown, it is not scrollable. When I scroll the parent NestdScrollView scrolls.
...Someone commented about this being bad design, if anyone has a idea how to approach this kindly share your ideas also.
ANSWER
Answered 2020-Apr-11 at 19:24My suggestion would be in "list_item_text", In this, you have a scroll view and recycler view encapsulated, I am assuming these items will be very less in number around 5-10 and mostly will be visible on the screen, So there won't be any performance issue If we directly add LinearLayout in a parent layout dynamically by iterating a loop, only con of this approach will be that the views which are out of the screen, will be loaded into memory (which is not in recycler view), But considering your number of items, This is accepted, most of your items will be visible on the screen, And obviously It will save an extra overhead of Recyclerview population, rendering and all. Hope It will solve your touch issue.
QUESTION
I'm struggling with resizing and full screen mode of my project. This is what I'm working on Mandelbrot in a Pixel Shader and here on GIT https://github.com/ShamanLKG/Mandelbrot
The app crashes when Alt+Enter is pressed and I don't understand why.
...ANSWER
Answered 2020-Feb-15 at 10:44Found the error, the Direct2D resources were not released causing the ResizeBuffers to fail with code 0x887A0001. The tutorial from https://bell0bytes.eu/fullscreen/ has been very helpful.
QUESTION
Basically i have this code where i can drag an imageView horizontally it currently works fine until i release and try to move it again it dosen't really follow my touch it just goes in front of the touch or just goes somewhere where i didn't drag .
...ANSWER
Answered 2019-Aug-20 at 16:19Here is a much simpler way to achieve the same result:
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