Macro plot_residuals 

macro_rules! plot_residuals {
    ($fit:expr, { $( $name:ident : $value:expr ),* $(,)? } $( , prefix = $prefix:expr )?) => { ... };
    ($fit:expr$( , prefix = $prefix:expr )?) => { ... };
}

Plot the residuals of a CurveFit to a PNG file.

Generates a filename based on the source file, line number, and timestamp.

• Creates the necessary directories if they don’t exist.
• Prints the path of the generated file to stdout.
• If prefix is specified, it is prepended to the filename.

Examples

plot_residuals!(fit);
plot_residuals!(fit, prefix = "custom");
plot_residuals!(fit, PlotOptions<_> { title: "My Plot", ..Default::default() });
plot_residuals!(fit, PlotOptions<_> { title: "My Plot", ..Default::default() }, prefix = "custom");