band | Monolithic repository of everything Band Protocol | Cryptocurrency library
kandi X-RAY | band Summary
kandi X-RAY | band Summary
Band Protocol is a protocol for decentralized data governance on public blockchains. The protocol incentivizes multiple independent parties to work cooperatively to provide trusted data for decentralized applications on-chain. For more information on how the protocol works, visit the developer portal. This repository is a monorepo containing Band Protocol's smart contracts and variuous supporting tools and libraries. See below for the breakdown and explanation of each folder. Note that each folder is its own independent module with separate license and README.
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QUESTION
I've used a web API to import data from a specific website. I was able to import the data in JSON format. I am very new to python, hence finding hard to transform it to a tabular format which I can use it for my data analysis. Here's my sample code;
...ANSWER
Answered 2021-Jun-15 at 12:09Is it what you expect?
QUESTION
import yfinance as yf
msft = yf.Ticker('MSFT')
data = msft.history(period='6mo')
import mplfinance as mpf
data['30 Day MA'] = data['Close'].rolling(window=20).mean()
data['30 Day STD'] = data['Close'].rolling(window=20).std()
data['Upper Band'] = data['30 Day MA'] + (data['30 Day STD'] * 2)
data['Lower Band'] = data['30 Day MA'] - (data['30 Day STD'] * 2)
apdict = (
mpf.make_addplot(data['Upper Band'])
, mpf.make_addplot(data['Lower Band'])
)
mpf.plot(data, volume=True, addplot=apdict)
ANSWER
Answered 2021-Jun-15 at 01:49- As per Adding plots to the basic mplfinance plot(), section Plotting multiple additional data sets
- Aside from the example below, for two columns from a dataframe, the documentation shows a number of ways to configure an appropriate object for the
addplotparameter. apdict = [mpf.make_addplot(data['Upper Band']), mpf.make_addplot(data['Lower Band'])]works as well. Note it's alist, not atuple.
- Aside from the example below, for two columns from a dataframe, the documentation shows a number of ways to configure an appropriate object for the
- mplfinance/examples
QUESTION
I want to calculate the % according to the total of the entire table, not just row or column in a pandas table with python. I can do by row and by column separately, but i rather to do the entire table. Any suggestions are welcome. Thanks so much
data
...ANSWER
Answered 2021-Jun-07 at 13:04If you do not have to do it in a single apply, you can just divide your cross-table with the total sum.
QUESTION
I am trying to recode my education variable from a factor with 18 levels to a factor with 7 levels,ranging from no qualification - GCSE D-G, GCSE A*-C- A Level -Undergraduate -Postgraduate - other.
...ANSWER
Answered 2021-Jun-11 at 21:40The syntax of the first command is wrong. Instead of bes[[bes$education]] use bes$education. Square brackets [[]] are to be used with numbers of columns and $ symbol with their names. It's either [[]] or $ but not both.
QUESTION
I am working on setting up git repositories on a windows server (2019), attempting to follow https://git-scm.com/book/en/v2/Git-on-the-Server-Setting-Up-the-Server. However, no matter what I do, git push comes up with fatal: ''/Users/testing/testrepo.git'' does not appear to be a git repository.
I ran:
git init
git add test.txt (test file, just contained test)
git commit -m "test"
git remote add origin testing@(removed):Users/testing/testrepo.git
git push origin master
After struggling with this for a while, I enabled logging for ssh and found this line on the server side log file:
7744 2021-06-09 03:58:37.691 debug1: Executing command: "c:\windows\system32\cmd.exe" /c "git-receive-pack '/Users/testing/testrepo.git'" with no pty
I tried manually running git-recieve-pack '/Users/testing/testrepo.git', and it came up with the same error. However, I then tried running git-receive-pack "/Users/testing/testrepo.git", and it gave
00bb0000000000000000000000000000000000000000 capabilities^{} report-status report-status-v2 delete-refs side-band-64k quiet atomic ofs-delta object-format=sha1 agent=git/2.32.0.windows.1
0000
The only difference was " instead of '. Is this something weird with windows server, or am I doing something wrong?
ANSWER
Answered 2021-Jun-11 at 13:10Turns out it was an issue with the ssh server I was using: https://github.com/PowerShell/Win32-OpenSSH/issues/752. One of the workarounds in the comments was to set the git receivepack and uploadpack commands to use powershell, but since I didn't want to change that for my global git config or have to do it for every repository I found a better solution. Following https://docs.microsoft.com/en-us/windows-server/administration/openssh/openssh_server_configuration, I added a key to HKLM:\SOFTWARE\OpenSSH: DefaultShell = "C:\windows\System32\WindowsPowerShell\v1.0\powershell.exe". Now ssh commands go to powershell by default on that server, which fixed the issue with git-receive-pack.
QUESTION
I am using the following code to read geotiff images (~300). Each image file contains 15 bands.
code:
...ANSWER
Answered 2021-Jun-10 at 08:48You may read the image using GDAL as described in the following post.
Example:
QUESTION
I want to design and train a neural network for the automatic recognition of the edges, in some microscopic images. I am using Keras for a start, I may consider PyTorch later.
The structure of the images is rather simple, with some dark areas, and some clear areas, relatively easy to distinguish, and the task is to select the pixels of the contour between dark and clear areas. The transition between dark and clear is gradual, so my result is not a single line of edge pixels, but rather a 10 or 15 pixels wide "ribbon" at the edge.
I have manually annotated 200-something images, so for each image I have another image, of the same size, where the pixels of the contours are black, and all the other pixels are white.
I have seen many tutorials on how to design, compile and fit a model (a neural network), and then how to test it, using the manually annotated data.
However, most of the tutorials work on problems of classification, where the number of neurons in the output layer is the number of categories.
My problem is not a problem of classification, and ideally my output should be an image of the same size of the input.
So, here is my question:
What is the best way to design the output layer? Is a layer with a number of neurons equal to the number of pixels the best idea? Or this is a waste, and there is a more efficient way?
Addendum
- The images are "easy", but it is still difficult to find the contour pixels, so I believe that it is worth using the machine learning approach.
- The transition between dark and clear is a little gradual, so my result is not a single line of pixels on the edge, but rather a band, a 10 or 15 wide ribbon of edge pixels. Since I am after a ribbon of pixels, my categories should be "edge" and "not-edge". If I use the categories "dark pixels" and "clear pixels", and then numerically find the pixels between the two areas I do not get the "ribbon" result, which I need.
ANSWER
Answered 2021-Jun-10 at 10:11The short answer is "yes": it is a good idea to have as many neurons in output as you have in input, i.e. to output an image with the same resolution of the input images.
The network architecture will have an input layer with a neuron for each pixel, then typically the hidden layers will shrink to less neurons, probably with convolutional layers, and then some more layers will re-expand the number of neurons, up to the output layer, which in principle may have the same number of neurons as the input layer.
The most common architecture in this type of problem is the U-net architecture, described in the article "U-Net: Convolutional Networks for Biomedical Image Segmentation", by Ronneberger, Fischer, and Brox, published on the open arxiv: https://arxiv.org/abs/1505.04597.
[
QUESTION
I'm developing an app that has live video, I managed to implement LibVLCSharp, but I have a problem, I need to remove everything from the screen, this is just missing:
Here is my code:
XAML
...ANSWER
Answered 2021-Jun-09 at 20:45Not sure what you mean. If you want to have only the video player, why not using the VideoView element instead of MediaPlayerElement (which is a view that already embeds commonly-used controls, like buttons, a seekbar...)
QUESTION
I am using a code written by Victor Velasquez to extract data from raster files which contain dayly precipitation data since 1981. When I run the code, I get this error that some index is out of bounds. I did a little research and found that this is common and there are a lot of similar questions here, but I haven´t been able to find the specific solution for this case.
The error:
...ANSWER
Answered 2021-Jun-09 at 13:29It looks like the file you are reading does not contain the geospatial point you are trying to find data for. (If this is incorrect please let me know).
You can add a statement to catch if a point is contained in the data:
QUESTION
I am working with numpy.ndarray including 286 images with the shape of (286, 16, 16, 3). Each image contains 3 bands with varying pixel values with float32 data types. The maximum value of pixel value in each band can be more than 255. Is it possible to normalize this numpy.ndarray between [0-1]?
code for reading the images:
...ANSWER
Answered 2021-Jun-09 at 09:21If you want the range of values of every image to be between 0 and 255, you could loop over the images, calculate min and max of the original image and squeeze them, so the minimum is 0 and the maximum is 255.
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