Single-file public-domain (MIT) simple linear regression
See wikipedia for definition/explanation of simple linear regression.
Library:
Example
A basic usage example, from
.
#defineSIMPLE_LINEAR_REGRESSION_IMPLEMENTATION #include"simple_linear_regression.h" #include<stdio.h>/* Some data that we want to find the slope, intercept and r2 for */staticconstdouble x[] = { 1.47, 1.50, 1.52, 1.55, 1.57, 1.60, 1.63, 1.65, 1.68, 1.70, 1.73, 1.75, 1.78, 1.80, 1.83 }; staticconstdouble y[] = { 52.21, 53.12, 54.48, 55.84, 57.20, 58.57, 59.93, 61.29, 63.11, 64.47, 66.28, 68.10, 69.92, 72.19, 74.46 }; intmain() { double slope = 0.0; double intercept = 0.0; double r2 = 0.0; double mae = 0.0; double mse = 0.0; double rmse = 0.0; int res = 0; res = simple_linear_regression(x, y, sizeof(x) / sizeof(x[0]), &slope, &intercept, &r2, &mae, &mse, &rmse); if (res < 0) { printf("Error: %s\n", simple_linear_regression_error_string(res)); return res; } printf("slope: %f\n", slope); printf("intercept: %f\n", intercept); printf("r2: %f\n", r2); printf("mean average error: %f\n", mae); printf("mean square error: %f\n", mse); printf("root mean square error: %f\n", rmse); return0; }C/C++ standards compliance
This library is tested to compile and run under the following standards: c89 c90 gnu89 gnu90 c99 gnu99 c11 gnu11 c17 gnu17 c++98 c++03 gnu++98 gnu++03 c++11 gnu++11 c++14 gnu++14 c++17 gnu++17 c++2a gnu++2a (see
).