formulaic | performance implementation of Wilkinson formulas | Machine Learning library
kandi X-RAY | formulaic Summary
kandi X-RAY | formulaic Summary
Formulaic is a high-performance implementation of Wilkinson formulas for Python. Note: This project, while largely complete, is still a work in progress, and the API is subject to change between major versions (0..).
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
- Tokenize formula .
- Calculate the basis function .
- Construct a model matrix .
- Convert an iterable of tokens into an AST node .
- Construct a polynomial polynomials .
- Evaluate the given expression .
- Tokenize a formula formula .
- Decorator to transform a function .
- Encodes categorical data .
- Sanitize variable names .
formulaic Key Features
formulaic Examples and Code Snippets
Community Discussions
Trending Discussions on formulaic
QUESTION
I am trying to read several .RLS (spreadsheet) files into one matrix using R. These files have very formulaic names, which makes it easy to work with. My plan (see code below) is to create the file names in a vector called names, then use a for loop to read and add the second column of each of those files into a matrix. However, I have encountered some issue. I have tested the names part of my code, and it can read tables into R individually. However when I try to put them all together into the matrix collected using the 2nd for loop, I get an error that says, "incorrect number of subscripts on matrix". I am not sure what this means. Any advice would be welcome.
...ANSWER
Answered 2022-Mar-01 at 19:51Regarding the issue, it may be because we used read_table
which returns a tibble
and tibble doesn't drop dimensions with [
. Instead, we need [[
.
QUESTION
I am applying a while loop, but the loop does not stop. Also, the serialmonitor stops writing values. Why is that? Also the stop command is not working. Below is my code
...ANSWER
Answered 2022-Feb-28 at 16:04You need to update the variable "x". for example if you want to repeat the loop 250 times just add 1 to x every loop.
QUESTION
This may be impossible, but I am trying to create a baseball fielding lineup generator that has a few constraints provided by the league (ie. must play twice in infield, twice in outfield, no repeats at any position). I think this would be fairly simple task using any programming language, but I am designing this for my 70yo uncle and he can basically only use excel with no macros. So I can't brute force my way through the problem and I don't think I understand the mathematics behind the problem well enough to even know if there is a excel formulaic solution.
At it's essence it's a Sudoku creator and solver with no repeats in the rows or columns. I have an ok solution for the infield/outfield part via ranking the individuals by position.
Recursively calculating with F9 is ok for the solution since this is just a change in the options menu, but the last time I sent him a macro his university MS account wouldn't let him run it or change the settings.
Well, I have plenty of other info and have gotten close to solutions using huge nested IFs, but this relatively brute force method seems to be pretty dumb and is not giving great solutions.
Thanks for any help!
...ANSWER
Answered 2022-Feb-25 at 23:19Well if your uncle has access to Excel 365 (sounds like a big if), you could use sorting to remove players already used in a given row or column, e.g. like this copied down and across from B2:
QUESTION
A Google Sheet has multi-line information in its cells, e.g. address.
Each address can have a different number of lines, but we know:
1st line is always the name
Penultimate line is always the post code and city
Last line is always the country
And we are trying to split the address into 4 columns:
Name
Street address (i.e. the address left over after extracting name, post code & city, country)
Post code and city
Country
So col B (name) reads first line =REGEXEXTRACT(A1,”(\w.*)”)
Of course, I can figure out how many lines there are in each cell by counting next line character
=LEN(A1)-LEN(SUBSTITUTE(A1,CHAR(10),””))
If the formula returns 6, then there are 7 lines
How do we get columns C (street address), D (postcode and city) and E (country) formulaically?
I mean, sure, I can get country for this cell with
=REGEXEXTRACT(A2,”(\n.*){6}”)
but I can’t copy the formula over….the 6 above is manual input, which defeats the purpose. Since this is regex, it obviously can’t take cell references instead of 6, e.g.
=REGEXEXTRACT(Amazon!B4,”(\n.*){F1}”)
(if for example, I stored in column F the number of next line characters in column A)
ANSWER
Answered 2021-Oct-26 at 23:17try:
QUESTION
I had a similar question to the poster here and tried using the formula provided: Split cell on delimiter using formulas
In my case, I have a spreadsheet with large text strings containing up to 50 distinct values per cell, delimited by "|". The format is "Product Category 1 > Product 1 | Product Category 2 > Product 2 | ..." etc.
If possible, I'd like to figure out how to extract values into a column formulaically.
The formula "=TRIM(MID(SUBSTITUTE($A$1,"|",REPT(" ",999)),(ROW(1:1)-1)*999+1,999))" (A1 contains the string) + drag & fill seemed to work perfectly, until I attempted to use it on a larger string which gives me a #VALUE! error. Through some experimentation I discovered that the formula will only error out if the string contains greater than 999 total characters.
I don't quite understand how ROW(1:1)*999+1 works as a positional indicator for the MID function, but it does seem to work up to a point. Raising the 999 threshold doesn't seem to make any difference. I've tried every possible combination of increasing the 999 values up to 2000 without success.
I thought the issue might be a hard character limit using the MID or SUBSTITUTE functions but I haven't had any luck finding info to back that up. If any of you brilliant folks wouldn't mind explaining to me what I'm missing, or if you have a more elegant solution for me, I would be much obliged.
Edit: Following @Euler's Disgraced Stepchild 's suggestion, a similar error occurs with >2 delimiters in the cell reference.
...ANSWER
Answered 2021-Jul-28 at 20:40If you have the newest version of Excel, you can use FILTERXML
. The structure is something like:
QUESTION
I have the following row in a spreadsheet of daily figures.
I would like to add another row that would create estimates to fill in the gaps (which don't appear in a regular fashion, and can be more than one in width) so that I would be left with:
So the values added to the gaps follow a linear progression from the figure to the left, to the figure to the right (more or less - I'm not too bothered about rounding).
I could do this in a macro, but I'd love to find a formulaic way of doing it.
Thanks
...ANSWER
Answered 2020-Oct-31 at 11:18I believe you are just looking for a kind of average calculation:
If there is one blank cell between A and B, then the value should be (A+B)/2
.
If there are two blank cells between A and B, then the first value should be A + (B-A)/3
and the second A + 2*(B-A)/3
.
If there are three blank cells between A and B, then the first value should be A + (B-A)/4
, the second A + 2*(B-A)/4
and the third one A + 3*(B-A)/4
.
...
(Note that for the first line: (A+B)/2
is in fact the same as A + (B-A)/2
(which shows the resemblence with the following lines).)
QUESTION
Ok, what am I missing here...
I'm trying to get an image tag to start with the 250px wide "small" image, and then have the browser choose the most appropriate image based on the srcset
& sizes
attributes - so, you know, "normal".
What is happening
The src
is the only thing used. Be it set to superawesomeimagename 250.jpg
or superawesomeimagename 1000.jpg
- it doesn't change/load a different image.
The HTML Tag itself
...ANSWER
Answered 2020-Aug-10 at 05:52So it turns out that the reason that it wasn't working was that my test case had an un-URL-encoded space in the name. And a space denotes the gap between file name and the size.
HTML Validating saves lives.
QUESTION
I'm tracking the percentage of different stocks in column 3 and I want them to be automatically sorted by descending order every time the data is updated. The data in column 3 is formulaic. They are not text. How can I write this script?
...ANSWER
Answered 2020-Mar-24 at 00:06tested on your sheet and works:
QUESTION
I using MVVM light library in my project. I trying to add an array to the constructor of the ViewModel.
For example... if the code below is
...ANSWER
Answered 2020-Feb-17 at 15:10You could register a Func
in the ViewModelLocator
where you initialize the array:
QUESTION
I created the editor inheriting the TextBox.
The editor loads the data from the file like below.
...ANSWER
Answered 2020-Jan-24 at 10:55Is there a formulaic way to solve this problem?
No, there isn't. You as the control developer needs to decide when to write the data back to the file.
The common solution to this kind of issues is to implemement some sort of throttling behavior, i.e. when you detect a key stroke you wait x seconds before you write the data back to the storage.
Please have a look at how ReactiveUI solves this using Rx and LINQ operators. You might also use a timer that you for example start when a TextChanged
event is raised.
The other option is of course to provide a button or some other input control that lets the user decide when to save.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install formulaic
You can use formulaic 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.
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page