https://github.com/gaocegege/data-god

A Python Library focused on faking data.
https://github.com/gaocegege/data-god

Last synced: 14 days ago
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A Python Library focused on faking data.

• Host: GitHub
• URL: https://github.com/gaocegege/data-god
• Owner: gaocegege
• License: mit
• Created: 2015-02-10T00:49:53.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2015-05-27T01:01:44.000Z (over 9 years ago)
• Last Synced: 2024-10-04T20:22:21.387Z (about 1 month ago)
• Language: Python
• Homepage:
• Size: 189 KB
• Stars: 5
• Watchers: 3
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: readme.md
  • License: LICENSE.txt

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README

        
# Data God

A Open Source program focused on faking data, you can use it when you need some fitting graph, inspired by MCM.

## Install 

	pip install datagod

## Example

For example, you give me a function such as `f(x) = x`, the code is:

	from datagod import *

	def main():

		testcase = DataGodBuilder()

		testcase.setType(GraphType.getPolynomialType())\

		.setTermList([0, 1])\

		.build()\

		.draw()

	main()

The program will return a graph: 

	

The module get a input such as a polynomial function. first, the program will fake some data around the function, and fit a curve using the faked data. So finally, you will get a graph, and some info about the fitting curve. In this case, the info is:

	Info: coff: [-0.03219724  0.99218986]

	Info: residuals: [ 6.13295169]

	Info: rank: 2

	Info: singular_values: [ 1.  1.]

	Info: rcond: 1.11022302463e-14

# Use

Every thing begins with `DataGodBuilder` class, so you need to get a DataGodBuilder, and there are some common config:

* `setLowRange(x1: float)` and `setHighRange(x2: float)` are used to set the domain of the graph, [x1, x2]. default is [0, 10]

## Polynomial

A polynomial in a single indeterminate can be written in the form: `p[0] * 1 + p[1] * x + p[2] * x ** 2 + ... + p[n] * x ** n`, so if get the list of terms p, then can get the polynomial.

* `setType(GraphType.getPolynomialType())` is needed to tell the builder that it need to build a graph about Polynomial.

* `setTermList(termlist: float List)` is needed to tell the builder the coefficients,  in order of increasing degree, i.e., [1, 2, 3] give 1 + 2*x + 3*x**2.

## Logarithm

A Logarithm can be written in the form: `term * log(base)[x] + intercept`, so tell me the term, base and intercept, I will know the log functon. 

* `setLogTerm(term: float)`

* `setBase(base: float)`

* `setIntercept(intercept: float)`

Notice: 0 in domain is bad.

## To be continued

# Requirements

1. numpy

2. matplotlib

3. scipy