nitrogen | NodeJS Notebook for building algo trading strategies | Cryptocurrency library

 by   stoqey TypeScript Version: Current License: No License

kandi X-RAY | nitrogen Summary

kandi X-RAY | nitrogen Summary

nitrogen is a TypeScript library typically used in Blockchain, Cryptocurrency applications. nitrogen has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

Notebook for building algo trading strategies. There are very few javascript notebooks for creating algorithmic trading strategies. With a simple server-side rendered app, you can run the algo code on the server-side then send the processed data to the client for visualization and analysis.
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              nitrogen has a low active ecosystem.
              It has 9 star(s) with 2 fork(s). There are 3 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              nitrogen has no issues reported. There are 11 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of nitrogen is current.

            kandi-Quality Quality

              nitrogen has no bugs reported.

            kandi-Security Security

              nitrogen has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              nitrogen does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
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              Without a license, all rights are reserved, and you cannot use the library in your applications.

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              nitrogen releases are not available. You will need to build from source code and install.
              Installation instructions are not available. Examples and code snippets are available.

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            nitrogen Key Features

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            nitrogen Examples and Code Snippets

            No Code Snippets are available at this moment for nitrogen.

            Community Discussions

            QUESTION

            Find fractions strictly not preceded by certain characters
            Asked 2021-Jun-14 at 21:20

            I'm trying to find fractions not preceded by a word followed by a /, for example, s2. My code doesn't work for that one but it's able to capture for other ones. Can you please help modify the regex expression? The expected is given followed by _f.

            ...

            ANSWER

            Answered 2021-Jun-14 at 21:16

            We could match either a regex lookaround to match the lower case letters ((?<=[a-z])) followed by either one or more space, comma ([, ]+) followed by any / and digits (\\d+) and other characters (.*) or (|) one or more digits and other characters and replace with blank ("")

            Source https://stackoverflow.com/questions/67977238

            QUESTION

            Shiny create new variable based on Numeric Input and plot SOLVED BY MYSELF
            Asked 2021-Jun-02 at 15:35

            UPDATE: I've found a mistake - I used plotOutput instead of plotlyOutput. All is fine now.

            I want to build a Shiny dashboard that does something like that:

            • takes a dataset with a numeric variable value
            • uses Numeric Input widget to obtain a numeric value
            • creates new variable value2=value*number provided in the Numeric Input box
            • plots a bar chart

            The sample code is below. It correctly places the Numeric Input box, but the chart does not appear (the box where the chart is supposed to be is completely empty). Why?

            ...

            ANSWER

            Answered 2021-Jun-02 at 15:35

            Use plotlyOutput instead of plotOutput and add library(plotly)

            Source https://stackoverflow.com/questions/67808059

            QUESTION

            allowing duplicate x axis categorical groups in ggplot2::geom_bar
            Asked 2021-May-31 at 14:50
            library(ggplot2)
            library(viridis)
            library(hrbrthemes)
            
            # create a dataset
            specie <- c(rep("sorgho" , 3) , rep("poacee" , 3) , rep("banana" , 3) , rep("triticum" , 3) )
            condition <- rep(c("normal" , "stress" , "Nitrogen") , 4)
            value <- abs(rnorm(12 , 0 , 15))
            data <- data.frame(specie,condition,value, stringsAsFactors = FALSE)
            data$condition[c(11, 12)] <- "other"
            
            # Graph
            ggplot(data, aes(fill = condition, y=value, x=condition)) + 
              geom_bar(position="dodge", stat="identity") +
              scale_fill_viridis(discrete = T, option = "E") +
              ggtitle("Studying 4 species..") +
              facet_grid(specie~., scales = "free", space = "free") +
              theme_ipsum() +
              theme(legend.position="none") +
              xlab("") +
              coord_flip() +
              theme(strip.text.x = element_text(angle = 0)) +
              theme_classic()
            
            ...

            ANSWER

            Answered 2021-May-31 at 14:50

            One option could be to define a helper variable for the plot, say cond2, in data with discrete names, but label by condition using scale_x_discrete, e.g.:

            Source https://stackoverflow.com/questions/67775607

            QUESTION

            ggplot is not correctly grouping bars when using position="dodge"
            Asked 2021-May-25 at 21:11

            Going nuts. I have a melted dataframe that I am trying to display in a simple grouped barplot in ggplot2:

            ...

            ANSWER

            Answered 2021-May-25 at 21:11

            Each value is different in pre, post i.e. 'A pre', 'B pre' etc. and similarly, 'A post', 'B post' etc. If we make it to a common group by removing the prefix part leaving the 'pre/post' then it would give similar output as in the example showed

            Source https://stackoverflow.com/questions/67695500

            QUESTION

            Creating html Elements dynamically using ngFor Angular
            Asked 2021-May-24 at 17:41

            Hi everyone I am new to angular. I am trying to create mat-cards for each object in an array however no cards appear.

            Html:

            ...

            ANSWER

            Answered 2021-May-24 at 17:41

            QUESTION

            Fitting a Quadratic-Plateau in python - scipy optimize.curve_fit a function returns value depends on a conditional parameter
            Asked 2021-May-06 at 10:28

            I'm trying to fit a Quadratic-plateau model to agricultural data. In particular, it's Nitrogen fertilization and corn yield response to it. It's a common practice in research.

            It's very common to do it using R, like in this following example- https://gradcylinder.org/quad-plateau/

            but it lacks examples and resources when it comes to python. I've managed to find a great library, called eonr (https://eonr.readthedocs.io/en/latest/) that does what I'm looking for (and much more) but i need more flexibility and more options for visualization.

            Through the eonr gallery I found the function it uses and the parameters for the fitting done by scipy.curve_fit.

            ...

            ANSWER

            Answered 2021-May-06 at 10:28

            As so often, the problem comes down to (already mentioned by Christian K. in a comment) starting values. It should work with some easy guesses, though. On top we can simplify our lives by choosing a different representation of the parabola, namely y = y0 + a * ( x - x0 )**2. This allows us directly to see the position of the extremum and the value it has at this point. The important point is to make sure that the position of the extremum is within data range or on the right of it. If it would be on the left, the function just gives a flat line in the data range. So in the Levenberg-Marquardt of curve_fit the derivatives wrt a and x0 have no effect. Only y0 is fitted to the rms.

            The final code looks like

            Source https://stackoverflow.com/questions/67399793

            QUESTION

            Is there a way to output a sentence first then exit in tkinter
            Asked 2021-Apr-27 at 05:49

            I want to output some sentences when the user presses the wrong button and then exit using tkinter module (like says "idiot" or something) when they answer a question wrong and exit the process. However, command=lambda: only support only one action and the python interpreter will output an error when I add multiple lines. Is there any way to perform two or more actions for the windows made by tkinter?
            This is part of the codes and I want the codes to output the self.correspondingBehavior part and then exit.

            ...

            ANSWER

            Answered 2021-Apr-27 at 05:49

            You can give more than one command (you can call more than one function) in command attribute using lambda. For this, you can use a list.

            For example, command=lambda:[root2.destroy(), next_step()]

            This would first destroy and exit the root2 window. And then also call next_step() function.

            Source https://stackoverflow.com/questions/67277541

            QUESTION

            Repeat a prompt field until a condition is true
            Asked 2021-Apr-19 at 21:05

            I'm trying to make a quiz with JavaScript and html. The user is asked to enter an answer of a question in a prompt field, the users answer and the right answer is sent to a function that compares them. If the answer subtracted with the right answer equals zero, the function will return a Point. If that isn't true the function won't return a point. If the answer from the user is anything other than 1-3 the function alerts of an invalid input. Everything here works however I want to add a feature that makes the code ask the same question again if the users answer is invalid, in other Words not 1-3. I've tried using while loops but can't get that to work. Any suggestions to how I could solve this and/or any other tips to make the code more structured.

            ...

            ANSWER

            Answered 2021-Apr-19 at 21:05

            Replace some of your code with the following function.

            Source https://stackoverflow.com/questions/67167177

            QUESTION

            What is the most accurate way of creating a raster from netcdf in R?
            Asked 2021-Mar-25 at 14:17

            I am processing netCDF data for multiple years. The netCDF is for air pollutant data, and the latitude and longitude are provided as separate variables, not as part of the original grid.

            LINK TO DATE: Sample Netcdf

            These netCDF files provide Level 2 Nitrogen Dioxide data and they are downloaded from NASA Earthdata portal. The satellite is Sentinel-5P and the instrument is TROPOMI.

            So when processing this data, you have to create variables for NO2, latitude and longitude. I am trying to create raster layers, and then save them as GeoTIFF files for my research.

            The problem here is related to the fact that I don't know how best to create these rasters. The latitude and longitude is not equally spaced throughout the dataset, and I haven't figured out a way to accurately create these images. I created a model grid using the number of rows and columns provided by the netCDF files. In the list of variables this is called the scanline and ground_pixel, but when I plot it the cells in the final image don't look right.

            This is how I upload the data:

            ...

            ANSWER

            Answered 2021-Mar-22 at 17:17

            QUESTION

            How to separate columns of *.csv file from one to more (Python, BioPython, Pandas)?
            Asked 2021-Mar-23 at 07:59

            I'm still quite a beginner and my friend (who's not answering so far) provided me a code for downloading a genomic sequence from Ensembl.org and writing it to a *.csv file using dictionaries. Unluckily, the file contains only one column and 89870 rows, I'm not sure how to fix it. It would ease my work with counting because it acts weird when doing plots. I don't know where could be a mistake. Here's the code:

            ...

            ANSWER

            Answered 2021-Mar-22 at 17:48

            The script you have is creating a TAB delimited output file, not a comma separated one. If you remove the delimiter='\t' parameter, it will default to a comma.

            Secondly, you appear to be getting extra blank rows. These are removed by adding the newline='' parameter when opening the output file. This is specified in the documentation.

            Source https://stackoverflow.com/questions/66731801

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

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            Install nitrogen

            You can download it from GitHub.

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