Initially developed as a leeway from statistics exam, this small piece of software is supposed to allow quick data analysis of big datasets. The main focus of this project is speed.
In order to perform analysis, just type:
./statula dataset_filename
into your terminal. Data should be in text file which contains only whitespaces and floating point numbers.
In case there is a character that does not meet above demands, all remaining characters of the current line shall be skipped.
-h/--help Prints simple help panel
-o/--open Open specified file
-s/--save Save result to specified file. Amount of targets must be equal to amount of files opened via --o
-l/--language Print result using specified language (language file has to be present in the current directory.
--precision Print result using specified float precision. --silent Disable printing to standard output.
--nosort Disable sorting the input. It results in vast performance improvement at the risk of incorrect results in mode, median and skewness. USE WITH CAUTION
--stdin Read directly from stdin. It is the default behaviour if Statula does not receive any starting parameters. Use EOF combination (which is CTRL+D on most systems) to finish data input.
--print_name Print file names directly above each printed dataset.
If there is just one string after "./statula" (not starting with "-"), then it shall be used as a default filename for the session.
Bit fields
Following section might come in useful if you plan to familiarize yourself with the code. Macro definitions can be found in header files.
Dataset:
| Bit | 2 | 1 | 0 |
|---|---|---|---|
| Option | SORT | MULTIPLE_MODES | NO_MODE |
Statula:
| Bit | 3 | 2 | 1 | 0 |
|---|---|---|---|---|
| Option | PRINT_FILE_NAME | PRINT_HELP | STDIN | PRINT_TO_STDOUT |
Q: What do "memory allocation responsibilities" mean?
A: In short: "None" means that the function doesn't allocate memory that's
visible outside of it's scope.
"Delegated to other functions" - memory allocation is delegated to other functions, but if you were to compare memory usage from before and after calling the function, new memory is allocated. It's just not done by that function itself.
"Allocates memory" speaks for itself.
You can sort of deduce complexity of a function based on it's memory allocation responsibilities - high-level ones usually have second type of memory allocation responsibilities, whereas primitives may allocate memory (init_ functions) or not (is_ boolean functions).
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Mathematical statistics
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Extend fuctionalities in descriptive statistics
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Get around limitations of current language system for help panel*
*I think help panel should work even if Statula is unable to load strings from file, however I am not quite sure how can I avoid hard-coding it into the program itself.
Tests are written using Criterion library - it is not neccessary to download it in order to use Statula, however I recommend it as it is a great piece of software. Thanks for everything Snaipe!