Irregular | Regular Expressions | Regex library

I have a data set of {x2} values for which two arrays f[x2] and g[x2] are known. The data set {x2} is not uniformly spaced; and I would like to evaluate the convolution integral of f,g using these known samples. A minimal code for this would be something like:

...

I have a table showing transactions along with the Receipt No., Mode of Payment, and Amount Tendered. What I need from this table is to get the Receipt Nos. with more than two Cash MOPs that have negative values after being summed up (and still leaving the positive amounts as is). The objective of this report is to show Receipt Nos. with irregularities as these are card loading transactions. Having negative summed up cash values would mean that they were given change, which should not happen. For example this is what I have:

Receipt No. MOP Amount 0001 Cash -100 0001 Cash -70 0001 Card 500 0002 Cash -50 0002 Cash -300 0002 E-Wallet 250 0003 Cash -100 0003 Cash 150 0003 Card 200 0004 Cash -100 0004 Cash 300 0004 Card 200

The results would need to be like this

Receipt No. MOP Amount 0001 Cash -170 0001 Card 500 0002 Cash -350 0002 E-Wallet 250

And here is the query that I have so far.

...

Is there a possibility to toggleText() for each element of the array separately?

Right now, when clicked, the values are changed for every single element at the same time and I'd like to go over them one by one as they're clicked.

...

I am trying to generate a simple, constant sine tone using SDL_audio. I have a small helper class that can be called to turn the tone on/off, change the frequency, and change the wave shape. I have followed some examples I could find on the web and got the following:

beeper.h

...

I have a small tracking project that I am working on. I have my frame by frame detection scheme setup and working. When I run I get a fair amount of noise in the polygon that I extract even if the scene is static. Since I want this run in real time, it seems Kalman filtering is the best way to solve this problem; however implementation details are sparse. I have seen some examples via google, but they typically deal with bounding boxes or regular shapes, which are described with only a few bits of info. I am not sure that approach would work.

I am interested in tracking the evolution of a more irregular geometry below. It takes ~100 points or more to describe the polygon. How can I adapt the OpenCV kalman tools to handle this task?

Thanks in advance.

** Update **

So additional details. I need to have an accurate profile of the object for downstream analysis so a bounding box is not an option. My camera can produce frames at 30 fps, but I do not need to process that fast, though I do not want to only process 1 a second either. Doing a fast de-noising operation is too slow. My images are 4024x3036 monochrome images. I attached jpeg versions of six shots of my scene. The sample is the small chunk in the center of the two plates in the bottom third of the image. I also attached what I am looking to pull from each frame an irregular polygon that matches the 2d profile of the shape accurately. I will favor accuracy and stability over speed but I would like to process a few frames per second.

I will go capture some representative images or small movie and will post shortly.

Thanks in advance.

Sample Images

The goal

...

Given a table with entries at irregular time stamps, "breaks" must be inserted at regular 5 min intervals ( the data associated can / will be NULL ).

I was thinking of getting the start time, making a subquery that has a window function and adds 5 min intervals to the start time - but I only could think of using row_number to increment the values.

...

I'm new for window application development, currently I am working at a flow chart winform project. I need draw a control like the picture show(copy from MS word, by Insert->Shapes->Block Arrows). [Arrow shape] [1]: https://i.stack.imgur.com/P7XBL.png This arrow can be moved, resized and reshaped. I have looked for some solutions, but most of them are regular shapes. Could I create a list and put all the 7 points of the arrow to this list, then draw the line between the points, one line by one line(Graphics::DrawImage)? If yes, then the next question is, how can I fill this irregular shape with some solid color? And how can I move this shape? If I redraw it, how to erase the old shape?

Current I can drag and move a control using following code, but for this irregular shape, how to get started? This project is C++/CLR, based .net, either C# or C++/CLI idea are welcome.

...

I just got two stylelint errors on a file that looked like this

...

I am trying to extract contour lines from a raster object using the raster package in R.

rasterToContour appears to work well and plots nicely, but when investigated it appears the contour lines are broken up into irregular segments. Example data from ?rasterToContour

...