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use fiasto::parse_formula;
fn main() -> Result<(), Box<dyn std::error::Error>> {
println!("=== Advanced Random Effects Syntax Examples ===\n");
// Basic Random Effects
println!("1. Basic Random Effects:");
// Random intercepts
let basic_intercept = "y ~ x + (1 | group)";
println!(" Random intercepts: {}", basic_intercept);
match parse_formula(basic_intercept) {
Ok(result) => println!(" ✓ Success: {}", serde_json::to_string_pretty(&result)?),
Err(e) => println!(" ✗ Error: {}", e),
}
println!();
// Random slopes only
let random_slopes = "y ~ x + (0 + x | group)";
println!(" Random slopes only: {}", random_slopes);
match parse_formula(random_slopes) {
Ok(result) => println!(" ✓ Success: {}", serde_json::to_string_pretty(&result)?),
Err(e) => println!(" ✗ Error: {}", e),
}
println!();
// Random intercepts + slopes (correlated)
let correlated = "y ~ x + (x | group)";
println!(" Random intercepts + slopes (correlated): {}", correlated);
match parse_formula(correlated) {
Ok(result) => println!(" ✓ Success: {}", serde_json::to_string_pretty(&result)?),
Err(e) => println!(" ✗ Error: {}", e),
}
println!();
// Random intercepts + slopes (uncorrelated)
let uncorrelated = "y ~ x + (x || group)";
println!(
" Random intercepts + slopes (uncorrelated): {}",
uncorrelated
);
match parse_formula(uncorrelated) {
Ok(result) => println!(" ✓ Success: {}", serde_json::to_string_pretty(&result)?),
Err(e) => println!(" ✗ Error: {}", e),
}
println!();
let mixed_correlation = "y ~ x + (x | group) + (y || group)";
println!(" Mixed correlation structures: {}", mixed_correlation);
match parse_formula(mixed_correlation) {
Ok(result) => println!(" ✓ Success: {}", serde_json::to_string_pretty(&result)?),
Err(e) => println!(" ✗ Error: {}", e),
}
println!();
// // Enhanced grouping with gr() function
// println!("2. Enhanced Grouping with gr() function:");
// let gr_basic = "y ~ x + (1 | gr(group))";
// println!(" Basic gr(): {}", gr_basic);
// match parse_formula(gr_basic) {
// Ok(result) => println!(" ✓ Success: {}", serde_json::to_string_pretty(&result)?),
// Err(e) => println!(" ✗ Error: {}", e),
// }
// println!();
// let gr_cor_false = "y ~ x + (x | gr(group, cor = FALSE))";
// println!(" gr() with cor = FALSE: {}", gr_cor_false);
// match parse_formula(gr_cor_false) {
// Ok(result) => println!(" ✓ Success: {}", serde_json::to_string_pretty(&result)?),
// Err(e) => println!(" ✗ Error: {}", e),
// }
// println!();
// let gr_by = "y ~ x + (1 | gr(subject, by = treatment))";
// println!(" gr() with by: {}", gr_by);
// match parse_formula(gr_by) {
// Ok(result) => println!(" ✓ Success: {}", serde_json::to_string_pretty(&result)?),
// Err(e) => println!(" ✗ Error: {}", e),
// }
// println!();
// // Cross-parameter correlation
// println!("3. Cross-Parameter Correlation:");
// let cross_param = "y ~ x + (1 |2| group)";
// println!(" Cross-parameter correlation: {}", cross_param);
// match parse_formula(cross_param) {
// Ok(result) => println!(" ✓ Success: {}", serde_json::to_string_pretty(&result)?),
// Err(e) => println!(" ✗ Error: {}", e),
// }
// println!();
// let gr_id = "y ~ x + (1 | gr(group, id = \"2\"))";
// println!(" gr() with id: {}", gr_id);
// match parse_formula(gr_id) {
// Ok(result) => println!(" ✓ Success: {}", serde_json::to_string_pretty(&result)?),
// Err(e) => println!(" ✗ Error: {}", e),
// }
// println!();
// // Multi-membership random effects
// println!("4. Multi-membership Random Effects:");
// let mm_basic = "y ~ x + (1 | mm(group1, group2))";
// println!(" Basic multi-membership: {}", mm_basic);
// match parse_formula(mm_basic) {
// Ok(result) => println!(" ✓ Success: {}", serde_json::to_string_pretty(&result)?),
// Err(e) => println!(" ✗ Error: {}", e),
// }
// println!();
// let mm_varying = "y ~ x + (1 + mmc(x1, x2) | mm(group1, group2))";
// println!(
// " Multi-membership with varying covariates: {}",
// mm_varying
// );
// match parse_formula(mm_varying) {
// Ok(result) => println!(" ✓ Success: {}", serde_json::to_string_pretty(&result)?),
// Err(e) => println!(" ✗ Error: {}", e),
// }
// println!();
// // Category-specific random effects
// println!("5. Category-specific Random Effects:");
// let cs_intercept = "y ~ x + (cs(1) | group)";
// println!(" Category-specific intercepts: {}", cs_intercept);
// match parse_formula(cs_intercept) {
// Ok(result) => println!(" ✓ Success: {}", serde_json::to_string_pretty(&result)?),
// Err(e) => println!(" ✗ Error: {}", e),
// }
// println!();
// let cs_slopes = "y ~ x + (cs(x) | group)";
// println!(" Category-specific slopes: {}", cs_slopes);
// match parse_formula(cs_slopes) {
// Ok(result) => println!(" ✓ Success: {}", serde_json::to_string_pretty(&result)?),
// Err(e) => println!(" ✗ Error: {}", e),
// }
// println!();
// // Nested and crossed random effects
// println!("6. Nested and Crossed Random Effects:");
// let nested = "y ~ x + (1 | group1/group2)";
// println!(" Nested random effects: {}", nested);
// match parse_formula(nested) {
// Ok(result) => println!(" ✓ Success: {}", serde_json::to_string_pretty(&result)?),
// Err(e) => println!(" ✗ Error: {}", e),
// }
// println!();
// let crossed = "y ~ x + (1 | group1:group2)";
// println!(" Crossed random effects: {}", crossed);
// match parse_formula(crossed) {
// Ok(result) => println!(" ✓ Success: {}", serde_json::to_string_pretty(&result)?),
// Err(e) => println!(" ✗ Error: {}", e),
// }
// println!();
// let separate = "y ~ x + (1 | group1) + (1 | group2)";
// println!(" Separate crossed random effects: {}", separate);
// match parse_formula(separate) {
// Ok(result) => println!(" ✓ Success: {}", serde_json::to_string_pretty(&result)?),
// Err(e) => println!(" ✗ Error: {}", e),
// }
// println!();
// // Complex examples
// println!("7. Complex Examples:");
// let multiple_slopes = "y ~ x + (x + y + z | group)";
// println!(" Multiple correlated random slopes: {}", multiple_slopes);
// match parse_formula(multiple_slopes) {
// Ok(result) => println!(" ✓ Success: {}", serde_json::to_string_pretty(&result)?),
// Err(e) => println!(" ✗ Error: {}", e),
// }
// println!();
// let interaction_random = "y ~ x + (x*y | group)";
// println!(
// " Random effects with interactions: {}",
// interaction_random
// );
// match parse_formula(interaction_random) {
// Ok(result) => println!(" ✓ Success: {}", serde_json::to_string_pretty(&result)?),
// Err(e) => println!(" ✗ Error: {}", e),
// }
// println!();
// // Advanced gr() options
// println!("8. Advanced gr() Options:");
// let gr_cov = "y ~ x + (1 | gr(species, cov = phylo_matrix))";
// println!(" gr() with custom covariance: {}", gr_cov);
// match parse_formula(gr_cov) {
// Ok(result) => println!(" ✓ Success: {}", serde_json::to_string_pretty(&result)?),
// Err(e) => println!(" ✗ Error: {}", e),
// }
// println!();
// let gr_dist = "y ~ x + (1 | gr(group, dist = \"student\"))";
// println!(" gr() with non-normal distribution: {}", gr_dist);
// match parse_formula(gr_dist) {
// Ok(result) => println!(" ✓ Success: {}", serde_json::to_string_pretty(&result)?),
// Err(e) => println!(" ✗ Error: {}", e),
// }
// println!();
println!("=== All examples completed! ===");
Ok(())
}