blotter | blotter provides transaction infrastructure | Cryptography library

by braverock R Version: Current License: No License

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | blotter Summary

blotter is a R library typically used in Security, Cryptography applications. blotter has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

Transaction infrastructure for defining instruments, transactions, portfolios and accounts for trading systems and simulation. Provides portfolio support for multi-asset class and multi-currency portfolios. Actively maintained and developed.

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Support

blotter has a low active ecosystem.

It has 78 star(s) with 49 fork(s). There are 19 watchers for this library.

It had no major release in the last 6 months.

There are 21 open issues and 52 have been closed. On average issues are closed in 145 days. There are 2 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of blotter is current.

Quality

blotter has no bugs reported.

Security

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

License

blotter does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

blotter 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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blotter Key Features

No Key Features are available at this moment for blotter.

blotter Examples and Code Snippets

No Code Snippets are available at this moment for blotter.

Community Discussions

Trending Discussions on blotter

How can I order the column values that appear in a Filter list in ag-Grid and AdapTable?

Ranking pandas data frame rows on multiple columns

How do I gradually change jS variable value on cursor position?

CSV not being loaded into pandas for zipline project

refresh row after cell value change in ag-grid javascript

VueJS event handlers being rendered before DOM content is completely loaded?

How to bootstrap in R

No transactions/positions to Chart Quantstrat, "logical" error?

How to create streaming Web api? or which techonology we can implement to create streaming api in .NET?

run_algorithm() fails because it cannot fetch data from the internet source (403 Forbidden)

QUESTION

How can I order the column values that appear in a Filter list in ag-Grid and AdapTable?

Asked 2020-Dec-22 at 17:28

We have a user requirement that the values in a date column in our ag-Grid Trade Blotter are shown in reverse order (i.e. most recent first).

Is there an easy way to do that?

We are using ag-Grid 23 with Adaptable 7.2.5.

...

ANSWER

Answered 2020-Dec-22 at 17:28

There are 2 ways of doing it:

Easy way - set the 'sortColumnValuesInFilter' property in Filter Options to true in your Adaptable Options (see https://docs.adaptabletools.com/docs/adaptable-options/filter-options) and then it will display items in the filter using whatever sort the column currently has.
More complicated and powerful way - provide a getColumnValues implementation. This is a user function which is run whenever AdapTable needs to show distinct values in a column - so you can decide which columns to apply it and then sort the return list however you want (see https://docs.adaptabletools.com/docs/user-functions/get-column-values-user-function)

Source https://stackoverflow.com/questions/65408240

QUESTION

Ranking pandas data frame rows on multiple columns

Asked 2020-Dec-02 at 18:58

I am new to Pandas. I am trying to understand how to do something in pandas, that I do in SQL -

I have a table like -

...

ANSWER

Answered 2020-Dec-02 at 06:29

pandas sort_values method for a DataFrame might be what you are looking for.

Source https://stackoverflow.com/questions/65102908

QUESTION

How do I gradually change jS variable value on cursor position?

Asked 2020-Nov-26 at 14:24

I'm trying to connect a jS Blotter effect to a cursor position function, whereby the cursor position on the page changes the value of one of my parameters. I'm getting the cursor position like this:

...

ANSWER

Answered 2020-Nov-26 at 14:24

Why about using modulo for this? Based on y's position the value change a bit.

Source https://stackoverflow.com/questions/65023512

QUESTION

CSV not being loaded into pandas for zipline project

Asked 2020-Jul-15 at 20:38

I am trying to use zipline for backtesting and I am getting this error:

...

ANSWER

Answered 2020-Jul-15 at 20:38

Apparently you have to change something in the configuration of Zipline I found someone with the same problem in the comments sections of the tutorial and this is what he said to do:

In User/Anaconda3/envs/[environment]/Lib/site-packages/zipline/data/benchmark.py

Source https://stackoverflow.com/questions/62866803

QUESTION

refresh row after cell value change in ag-grid javascript

Asked 2020-Jun-18 at 03:14

I have searched for a long time for this and I'm sure I must have missed something because it is such a basic ask.

I define the formats in my grid through the cellClass field in defaultColDef:

...

ANSWER

Answered 2020-Jun-18 at 03:14

You could do something like -

Source https://stackoverflow.com/questions/62441190

QUESTION

VueJS event handlers being rendered before DOM content is completely loaded?

Asked 2020-Jun-04 at 09:36

I am building a Vuejs application, so I am using the @mousemove directive in conjunction with Vue-blotter. Below, under the "Interaction example" section, I found some base code for manipulating the component properties. So with a minuscule bit of refactoring, I added it to my project and changed the scope.material.uniforms.uSpeed.value = (e.x + e.y) / 4500 found in the sample to scope.material.uniforms.uSeed.value = (e.x + e.y) / 2000 also a valid property, as will be shown later. The problem is that if I move the cursor before the page is completely loaded the console will display this error:

Error in v-on handler: "TypeError: undefined is not an object (evaluating 'scope.material.uniforms.uSeed')"

This error stops being outputted even if I move the mouse after the page is completely loaded. I am using Vue-router and this is how my Home view looks like:

...

ANSWER

Answered 2020-Jun-04 at 09:31

Try changing these lines

Source https://stackoverflow.com/questions/62182689

QUESTION

How to bootstrap in R

Asked 2020-May-15 at 10:48

I obtained the returns of the RUT index running a backtest in R in Quantstrat. Now I would like to create a bootstrap of the returns but I do not know how to do it. I know that the boot() function needs data, statistic, and number of bootstrap repetitions. In data I think I can add "returns" ( see code below ) But I do not know how to compute "statistic". Can someone help?

Please refer to the code below:

...

ANSWER

Answered 2018-Jul-14 at 19:36

Here is a simple example of boot() [based on Chapter 5, Page 196 in ISLR] to calculate bootstrapped mean of a column in a dataframe. (R version 3.3.0). The boot() function needs data, a function that calculates a statistic of interest and number of bootstraps 'R'. Here, the function has to have two inputs i.e. data and an index to iterate.

Calculate mean using boot()

Source https://stackoverflow.com/questions/51341146

QUESTION

No transactions/positions to Chart Quantstrat, "logical" error?

Asked 2020-May-15 at 10:46

I get the error message that the are no transactions/positions to chart despite the use of signals and rules. Can someone explain me what I am doing wrong? Is it maybe in the logical development of rules? I want my rules to do what follows: Enter long AND exit short if CNOwma crosses above 0.6. Enter short AND exit long if CNOwma crosses below 0.6. Please refer to the following code. The error is in the last line.

Thank you.

...

ANSWER

Answered 2019-Nov-19 at 11:03

I solved the issue.

A lot of errors arising with backtesting in Quantstrat are due to misspecification of column names.

The problem was solved by changing the code to:

Source https://stackoverflow.com/questions/51345983

QUESTION

How to create streaming Web api? or which techonology we can implement to create streaming api in .NET?

Asked 2020-May-04 at 09:21

I need API which stream live data to UI (UI might be react or angular application). Once I call the server, it should keep on giving live data in JSON format. For eg application like Blotter screen in Trading application

Which technology will be more suitable to create this type of API?

...

ANSWER

Answered 2020-May-04 at 06:18

Have a look at WebSockets and ASP.NET Core SignalR

https://docs.microsoft.com/en-us/aspnet/core/fundamentals/websockets?view=aspnetcore-3.1

Source https://stackoverflow.com/questions/61586111

QUESTION

run_algorithm() fails because it cannot fetch data from the internet source (403 Forbidden)

Asked 2020-Jan-09 at 16:56

I tried to follow zipline's Quickstart:

...

ANSWER

Answered 2020-Jan-09 at 16:56

This issue is due to a change in IEX trading api which now requires an API key (account) to query it. I hope that it will be corrected and clarified in the documentation in the future and that retrieving data from external APIs would be much more easier.

For now, you have two options:

1. Change the benchmark code:

Source https://stackoverflow.com/questions/59654388

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

Vulnerabilities

No vulnerabilities reported

Install blotter

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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