datar | A Grammar of Data Manipulation in python | Data Manipulation library
kandi X-RAY | datar Summary
kandi X-RAY | datar Summary
Port of dplyr and other related R packages in python, using pipda. Documentation | Reference Maps | Notebook Examples | API | Blog. Unlike other similar packages in python that just mimic the piping syntax, datar follows the API designs from the original packages as much as possible, and is tested thoroughly with the cases from the original packages. So that minimal effort is needed for those who are familar with those R packages to transition to python.
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Top functions reviewed by kandi - BETA
- Creates a broadcast base
- Reconstruct a Tibble
- Construct a Tibble
- Combine categorical values
- Construct a Collection from a list of elements
- Return the rank of the data
- Rank x
- Raise an AttributeError if the import fails
- Reconstruct a Tibble object
- Get an option
- Represents a set of universal names
- Return a dict of options
- Return a function factory
- Check if argname is one of the values
- Register transform function
- Generate a function factory
- Group by cols
- Return a function to register a transform function
- Return the logarithm of the log function
- Regroup the TibbleGroup
- Compute the digamma of x
- Helper function for group_map
- Get an option value
- Call a bound function
- Expand the array
- Evaluate the model
- Create Diot options
- Create a categorical Series
- Construct a Tibble from the given arguments
- Splits a single column into multiple columns
- Construct a Collection from a series of elements
- Group values into a Tibble
datar Key Features
datar Examples and Code Snippets
Lines of Code : 485
License : No License
Copy This product includes software developed by Niels Provos.
Xl = *xl;
Xr = *xr;
Xl ^= p[0];
BLFRND(s, p, Xr, Xl, 1); BLFRND(s, p, Xl, Xr, 2);
BLFRND(s, p, Xr, Xl, 3); BLFRND(s, p, Xl, Xr, 4);
BLFRND(s, p, Xr, Xl, 5); BLFRND(s, p, Xl, Xr, 6);
BLFRND Community Discussions
Trending Discussions on datar
QUESTION
I just started programming a STM32 and generated a code with CubeMX for an SPI communcation with a gyroscope (L3GD20) I have a problem with the HAL_SPI commands.
I first try to read the WHO_AM_I register which return a good response (0xD4)
Then I tried to do the same with CTRL_REG1 register and it was still good by returning (0x07).
But if I try to get both of them one after the other, the HAL_SPI_Receive keeps sending the data of the first HAL_SPI_Transmit of the code...
Tried to give it other buffers but still didn't work.
Here is the part of the code I'm intersted in :
...ANSWER
Answered 2021-Jun-11 at 10:26Since HAL_SPI_Receive is already using HAL_SPI_TransmitReceive (github stm32f4 spi driver) to send dummy data to generate clock, you can use that fact and ditch the HAL_SPI_Transmit, and use the receive function like this:
QUESTION
The issue is that the whole widget is rebuilds itself infinite times.
I had try convert it to StatelessWidget, but nothing changed.
But when I copy the same code to another class its works fine.
Here is my code.
...ANSWER
Answered 2021-May-17 at 18:58You don't have to re-instantiate the Future every time you instantiate the FutureBuilder, but you have to keep it in a field of your State class. Otherwise when the future completes and rebuilds the FutureBuilder, the FutureBuilder will receive as an argument a new future which has yet to complete, and so on in an infinite loop.
For a more detailed explanation see for example the article https://flutterigniter.com/future-async-called-multiple-times/
QUESTION
What I am trying to do: I have a simple SIR model, with time varying transmission rates beta, I have already implemented this in R (thanks to @tpetzoldt). We have a population of N=10000, gamma is also fixed.
...ANSWER
Answered 2021-May-13 at 14:51I don't think that estimating beta per time step is a good idea. This is inherent in the problem and not a fault of deSolve or FME. If a dynamic model shall be used to estimate time dependent parameters, I would recommend to use a suitable function with less knots, e.g. time dependent linear, quadratic or spline, for example 3-5 instead of 20 knots. Then replace approxfun with that function and plug it in. Model fitting is an art, so play with start values and solvers. And, read the books.
Note that the following is just a technical demonstration:
QUESTION
I'm new to NS3. I have a query in changing the pointtopoint link datarate during the runtime. I tried a solution which is mentioned in https://stackoverflow.com/a/65514090/13121848. But here SetDeviceAttribute is not resolved for me.
...ANSWER
Answered 2021-May-13 at 05:51Inorder to change the datarate of a pointTopoint link, the PointToPointNetDevice installed in a node has to be retrieved. This can be done using the NetDeviceContainer where the node is associated. The example code is below,
QUESTION
I'm trying to get data from my API then modifying it, I tried this:
...ANSWER
Answered 2021-Mar-29 at 17:12const [reports, setReports] = useState([]);
const [workers, setWorkers] = useState([]);
const [newReports, setNewReports] = useState([])
const get_reports = async (dataRes) =>{
const Report_Res = await axios.get('/api/reports/?my_business=' + dataRes.id)
setReports(Res.data);
}
const get_worker_data = async (dataRes)=>{
const Worker_Res = await axios.get('/api/workers/?my_business=' + dataRes)
setWorkers(dataRes.data);
}
useEffect(()=>{
get_user_data()
},[])
useEffect(()=>{
get_reports(dataRes)
get_worker_data(dataRes)
},[dataRes])
useEffect(()=>{
setNewReports(fix_data())
},[reports, workers])
QUESTION
wanna know how to show this result like int number
...ANSWER
Answered 2021-Apr-02 at 14:03Try This. Maybe This should Help. If this doesn't work then let me know.
QUESTION
I got a class which I created a mock for so I can test it.
The class itself looks something like this:
...ANSWER
Answered 2021-Mar-31 at 15:08Why won't it enter the method?
Moq will override virtual members by default.
Configure the mock to call the base virtual member by setting CallBase property to true
CallBase = true will let the mock invoke base class implementation(s) if no expectation (Setup) overrides the member.
Also since the member under test is asynchronous, the test should also be asynchronous
QUESTION
Iam developing a QT software which is using telnet commands to get some information from the adsl modem link. i got all those information to a QString
...ANSWER
Answered 2021-Mar-24 at 15:53Maybe something like this will work:
QUESTION
I would like to get data from a JSON-String, which is in a JSON-Array, with VBA to display the data into an Excel-Worksheet. I'm using the library (VBA-JSON v2.3.1 JsonConverter)
I have the following JSON-Object
...ANSWER
Answered 2021-Feb-12 at 13:29The item you are returning is, itself, a json string. So to parse it out, in VBA, you need to create another json object.
eg:
QUESTION
I need your help with calculating checksum in C#. Code below is for application writen in C++. App is receiving packets from UDP. This is part of code where is receive and checksum calculation.
...ANSWER
Answered 2021-Feb-04 at 12:12The server calculates the checksum only of the half of the received header and data. Sent checksum should lead to calculated checksum become 0xffff. I assume you are sending to the server CommandKeyS structure and it's size is constant. I assume ChkSum on the server is of type _int16 and initialized to 0. I dont know C#, so replaced parts with C++ code hoping it's not too different. You can remove get function of ChKSum field and before sending the data call this function to initialize the checksum:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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Install datar
You can use datar like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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