Merge pull request #10 from poojanagrawal/standard_abundances

feat(Standard-Compositions): Imported standard metal fractions from MESA
This commit is contained in:
2026-06-08 13:13:58 +00:00
committed by GitHub
20 changed files with 2153 additions and 16 deletions

1
.gitignore vendored
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@@ -74,6 +74,7 @@ subprojects/libconstants/
subprojects/liblogging/
subprojects/.wraplock
subprojects/tomlplusplus-*/
subprojects/CLI11-*/
qhull.wrap
quill.wrap

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@@ -48,7 +48,7 @@ PROJECT_NAME = fourdst::libcomposition
# could be handy for archiving the generated documentation or if some version
# control system is used.
PROJECT_NUMBER = v2.3.1
PROJECT_NUMBER = v2.4.0
# Using the PROJECT_BRIEF tag one can provide an optional one line description
# for a project that appears at the top of each page and should give viewers a

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@@ -0,0 +1,2 @@
cli11_proj = subproject('cli11')
cli11_dep = cli11_proj.get_variable('CLI11_dep')

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@@ -2,4 +2,5 @@ cmake = import('cmake')
subdir('fourdst')
subdir('xxHash')
subdir('CLI11')

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@@ -18,7 +18,7 @@
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# *********************************************************************** #
project('libcomposition', 'cpp', version: 'v2.3.1', default_options: ['cpp_std=c++23'], meson_version: '>=1.5.0')
project('libcomposition', 'cpp', version: 'v2.4.0', default_options: ['cpp_std=c++23'], meson_version: '>=1.5.0')
# Add default visibility for all C++ targets
add_project_arguments('-fvisibility=default', language: 'cpp')
@@ -51,7 +51,6 @@ if get_option('pkg_config')
description: 'Composition module for SERiF and related projects',
version: meson.project_version(),
libraries: [libcomposition],
subdirs: ['fourdst'],
filebase: 'fourdst_composition',
install_dir: join_paths(get_option('libdir'), 'pkgconfig')
)

File diff suppressed because it is too large Load Diff

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@@ -0,0 +1,158 @@
#pragma once
#include "fourdst/config/config.h"
#include "fourdst/logging/logging.h"
#include "fourdst/composition/composition.h"
#include "quill/Logger.h"
#include <string>
#include <vector>
namespace fourdst::composition::io {
typedef std::vector<std::string> ParsedChemicalData;
struct CompositionData {
std::string comment_str;
double he_abundance;
bool requires_atomic_weight;
std::vector<std::string> elements;
std::vector<double> abundances;
};
struct IsotopicPercentage {
std::string comment_str;
std::vector<int> atomic_numbers;
std::vector<std::string> elements;
std::vector<int> mass_numbers;
std::vector<double> percentages;
};
enum class SolarCompositions {
AG89,
GN93,
GS98,
L03,
AGS05,
AGSS09,
A09_Przybilla,
MB22_photospheric,
AAG21_photospheric,
L09
};
enum class IsotopicPercentages {
L03,
L09
};
inline std::unordered_map<SolarCompositions, std::string> SolarCompositions_to_string_map = {
{SolarCompositions::AG89, "AG89"},
{SolarCompositions::GN93, "GN93"},
{SolarCompositions::GS98, "GS98"},
{SolarCompositions::L03, "L03"},
{SolarCompositions::AGS05, "AGS05"},
{SolarCompositions::AGSS09, "AGSS09"},
{SolarCompositions::A09_Przybilla, "A09_Przybilla"},
{SolarCompositions::MB22_photospheric, "MB22_photospheric"},
{SolarCompositions::AAG21_photospheric, "AAG21_photospheric"},
{SolarCompositions::L09, "L09"}
};
inline std::unordered_map<IsotopicPercentages, std::string> IsotopicPercentages_to_string_map = {
{IsotopicPercentages::L03, "L03_data"},
{IsotopicPercentages::L09, "L09_data"}
};
/**
* @class ChemicalFileParser
* @brief An abstract base class for chemical file parsers.
*
* This class defines the interface for parsing fortran code files that contain
* nuclide fractions. Derived classes must implement the `parse`
* method to handle specific file formats.
*/
class ChemicalFileParser {
private:
public:
/**
* @brief Parses a chemical file and returns the parsed data.
*
* This is a pure virtual function that must be implemented by derived
* classes. It takes a filename as input and returns a `ParsedChemicalData`
* struct containing the information extracted from the file.
*
* @param filename The path to the Chemical file to parse.
* @return A `ParsedChemicalData` struct containing the parsed reaction data.
*
* @throws std::runtime_error If the file cannot be opened or a parsing
* error occurs.
*
* @b Usage
* @code
* std::unique_ptr<ChemicalFileParser> parser = std::make_unique<SimpleReactionListFileParser>();
* try {
* ParsedChemicalData data = parser->parse("my_reactions.txt");
* for (const auto& reaction_name : data.reactionPENames) {
* // ... process reaction name
const mfem::GridFunction& grav_potential_at_inf(FEM& fem, const Args& args, const mfem::GridFunction& rho, bool pho_warm) {
}
* }
* } catch (const std::runtime_error& e) {
* // ... handle error
* }
* @endcode
*/
[[nodiscard]] CompositionData parse_compositon_data(const std::vector<char>& data,const std::string& scheme) const ;
[[nodiscard]] IsotopicPercentage parse_isotopic_percentage(const std::vector<char>& data,const std::string& scheme) const ;
};
}
namespace fourdst::composition {
/**
* @brief Function to retrieve a standard solar composition record indexed by their canonical names including
* - AG89
* - GN93
* - GS98
* - L03
* - AGS05
* - AGS08
* - A09_Pryzbilla
* - MB22_photospheric
* - AAG21_photospheric
* - L09
* Further, isotopic percentages can be selected as either
* - L03
* - L09
*
* These data have been extracted from chem_def.f90 from MESA <version>
*
* @note Composition names are case normalized; therefore, the inputs for metal fraction scheme and isotopic percentage scheme are case insensitive.
*
* @param metal_fraction_scheme The name of the metal fraction scheme to use. Must be one of the following: AG89, GN93, GS98, L03, AGS05, AGS08, A09_Pryzbilla, MB22_photospheric, AAG21_photospheric, L09
* @param isotopic_percentage_scheme The name of the isotopic percentage scheme to use. Must be one of the following: L03, L09
* @param initial_z <poojan_documenent_here>
* @param initial_y <poojan document here>
*/
[[nodiscard]] Composition get_composition_record(const std::string& metal_fraction_scheme,
const std::string& isotopic_percentage_scheme,
double initial_z,
double initial_y);
/**
* @brief Overload of the string based version of this function which accepts the enums Solar
* @param metal_fraction_scheme Enum corresponding to the standard solar composition to select
* @param isotopic_percentage_scheme Enum corresponding to the isotopic percentages prescription to select
* @param initial_z <poojan_document_here>
* @param initial_y <poojan_document_here>
* @return
*/
[[nodiscard]] Composition get_composition_record(io::SolarCompositions metal_fraction_scheme,
io::IsotopicPercentages isotopic_percentage_scheme,
double initial_z,
double initial_y);
}

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@@ -38,7 +38,7 @@
#include <numeric>
#include "fourdst/composition/utils/composition_hash.h"
#include "fourdst/composition/utils.h"
#include "../include/fourdst/composition/utils/utils.h"
#include "fourdst/composition/exceptions/exceptions_composition.h"

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@@ -0,0 +1,396 @@
#include "fourdst/composition/io/standard_compositions.h"
#include "fourdst/composition/io/StandardMetalFractionsBinary.h"
#include "fourdst/composition/composition.h"
#include "fourdst/atomic/atomicSpecies.h"
#include "fourdst/atomic/species.h"
#include "../../include/fourdst/composition/utils/utils.h"
#include <string>
#include <vector>
#include <algorithm>
#include <fstream>
#include <numeric>
#include <stdexcept>
#include <unordered_map>
#include <print>
#include <ranges>
#include <cctype>
namespace fourdst:: composition::io {
namespace {
inline void ltrim(std::string &s) {
s.erase(
s.begin(),
std::ranges::find_if(s,
[](const unsigned char ch) {
return !std::isspace(ch);
})
);
}
inline void rtrim(std::string &s) {
s.erase(
std::find_if(
s.rbegin(),
s.rend(),
[](const unsigned char ch) {
return !std::isspace(ch);
}).base(),
s.end()
);
}
inline void trim(std::string &s) {
ltrim(s);
rtrim(s);
}
}
bool to_bool(std::string s) {
std::transform(s.begin(), s.end(), s.begin(),
[](unsigned char c){ return std::tolower(c); });
return s == "true";
}
CompositionData ChemicalFileParser::parse_compositon_data(const std::vector<char>& data,const std::string& scheme) const {
// get file and metal_fraction_scheme
// Load the file
// find the metal_fraction_scheme
// return abundances
// LOG_TRACE_L1(m_logger, "Parsing chemical abundance for: {}", scheme);
bool debug = false;
if (debug){
std::println("Parsing chemical abundance for: {}", scheme);
}
std::istringstream stream(std::string(data.begin(), data.end()));
// add error message if something goes wrong
std::string line;
int start_line = 0;
int i = 0;
CompositionData comp;
while (std::getline(stream, line)) {
// find where the end of the scheme block is
auto end_pos = std::ranges::search(line,std::format("END {}", scheme));
// exit if have reached the end of block
if (!end_pos.empty()) {
break;
}
if (start_line>0){
const size_t colon_pos = line.find(':');
line = line.substr(colon_pos+1);
line.erase(std::remove_if(line.begin(), line.end(),
[](char c){ return c == '[' || c == ']'; }),
line.end());
trim(line);
std::string item;
std::stringstream ss(line);
double val;
switch(i-start_line){
case 1:
comp.comment_str = line;
break;
case 2:
comp.he_abundance = std::pow(10.0,std::stod(line));
break;
case 3:
comp.requires_atomic_weight = to_bool(line);
break;
case 4:
while(std::getline(ss, item, ',')) {
comp.elements.push_back(item);
}
break;
case 5:
while(std::getline(ss, item, ',')) {
val = std::pow(10.0,std::stod(item));
comp.abundances.push_back(val);
}
break;
}
}
// find where the start of the scheme block is
auto start_pos = std::ranges::search(line, std::format("BEGIN {}", scheme));
if (!start_pos.empty()) {
start_line = i;
}
i+=1;
}
// if (start_pos==0):
// raise error ("Scheme {} not found", scheme)
if (debug){
std::println("he_abundance: {}", comp.he_abundance);
std::println("requires_atomic_weight: {}", comp.requires_atomic_weight);
std::println("elements: {}",comp.elements);
std::println("abundances: {}", comp.abundances);
}
return comp;
}
IsotopicPercentage ChemicalFileParser::parse_isotopic_percentage(const std::vector<char>& data,const std::string& scheme) const {
// get file and iso_scheme
// Load the file
// find the iso_scheme
// get iso_comp data
// IsotopicPercentage object
bool debug = false;
if (debug){
std::println("Parsing Isotopic Percentage for: {}", scheme);
}
std::istringstream stream(std::string(data.begin(), data.end()));
// add error message if something goes wrong
ParsedChemicalData parsed;
std::string line;
int start_line = 0;
int i = 0;
IsotopicPercentage iso;
while (std::getline(stream, line)) {
// find where the end of the scheme block is
auto end_pos = std::ranges::search(line,std::format("END {}", scheme));
// exit if have reached the end of block
if (!end_pos.empty()) {
break;
}
if (start_line>0){
const size_t colon_pos = line.find(':');
line = line.substr(colon_pos+1);
line.erase(std::remove_if(line.begin(), line.end(),
[](char c){ return c == '[' || c == ']'; }),
line.end());
trim(line);
std::string item;
std::stringstream ss(line);
parsed.push_back(line);
switch(i-start_line){
case 1:
iso.comment_str = line;
break;
case 2:
while(std::getline(ss, item, ',')) {
iso.atomic_numbers.push_back(std::stoi(item));
}
break;
case 3:
while(std::getline(ss, item, ',')) {
iso.elements.push_back(item);
}
break;
case 4:
while(std::getline(ss, item, ',')) {
iso.mass_numbers.push_back(std::stoi(item));
}
break;
case 5:
while(std::getline(ss, item, ',')) {
iso.percentages.push_back(std::stod(item));
}
break;
}
}
// find where the start of the scheme block is
auto start_pos = std::ranges::search(line, std::format("BEGIN {}", scheme));
if (!start_pos.empty()) {
start_line = i;
}
i+=1;
}
if (debug){
std::println("atomic_numbers: {}", iso.atomic_numbers);
std::println("elements: {}",iso.elements);
std::println("mass_numbers: {}", iso.mass_numbers);
std::println("percentages: {}", iso.percentages);
}
return iso;
}
}
namespace fourdst::composition {
Composition get_composition_record(const std::string& metal_fraction_scheme,
const std::string& isotopic_percentage_scheme,
double initial_z, double initial_y) {
std::vector<char> data;
io::ChemicalFileParser parser;
io::CompositionData metals;
io::IsotopicPercentage isotopes;
data = std::ranges::to<std::vector<char>>(StandardMetalFractions);
metals = parser.parse_compositon_data(data,metal_fraction_scheme);
isotopes = parser.parse_isotopic_percentage(data,isotopic_percentage_scheme);
std::string name;
std::vector<atomic::Species> species;
// construct name of the isotopes for all elements
for (const auto [E,A] : std::ranges::views::zip(isotopes.elements, isotopes.mass_numbers)){
if (std::ranges::contains(metals.elements,E ) || E == "H" || E == "He") {
name = std::format("{}-{}",E,A);
auto SpeciesObject = atomic::species.at(name);
species.push_back(SpeciesObject);
// std::println("Species: {} has mass: {}", SpeciesObject.name(), SpeciesObject.mass());
}
}
std::vector<double> massFracs;
std::unordered_map<std::string, double> metal_fractions;
// hydrogen and helium are treated separately
// H1
massFracs.push_back(std::max(0.0, std::min(1.0, 1.0 - (initial_z + initial_y))));
// H2
massFracs.push_back(0.0);
// He3
// anders & grevesse 1989 solar mass fractions
double xsol_he3,xsol_he4;
xsol_he3 = 2.9291e-05;
xsol_he4 = 2.7521e-01;
massFracs.push_back(initial_y*xsol_he3/(xsol_he3 + xsol_he4));
// He4
massFracs.push_back(initial_y*xsol_he4/(xsol_he3 + xsol_he4));
// Metals
double ztotal = 1.0-std::accumulate(massFracs.begin(), massFracs.end(), 0.0);
// multiply by atomic weight if needed
if (metals.requires_atomic_weight){
// get isotope with max abundance for each metal
// and store the corresponding mass number
auto element_atomic_weight = [&isotopes]() {
std::unordered_map<std::string, std::pair<double, int>> elem_info;
for (const auto& [iso, prcnt, a] : std::views::zip(isotopes.elements, isotopes.percentages, isotopes.mass_numbers)) {
if (iso == "H" || iso == "He") {
continue;
}
if (elem_info.contains(iso) && elem_info.at(iso).first <= prcnt) {
elem_info[iso] = std::make_pair(prcnt, a);
} else if (! elem_info.contains(iso)) {
elem_info[iso] = std::make_pair(prcnt, a);
}
}
return elem_info;
}();
for (const auto [E,A] : std::ranges::views::zip(metals.elements, metals.abundances)) {
// std::println("element: {}", E);
auto name = std::format("{}-{}",E,element_atomic_weight.at(E).second);
// std::println("{}", name);
auto SpeciesObject = atomic::species.at(name);
double weight = SpeciesObject.mass();
metal_fractions.emplace(E,A*weight);
// std::println("End");
}
} else {
for (const auto [E,A] : std::ranges::views::zip(metals.elements, metals.abundances)) {
metal_fractions.emplace(E,A);
}
}
double sum = [&metal_fractions]() {
double accumulator = 0.0;
for (const auto& frac : metal_fractions | std::views::values) {
accumulator += frac;
}
return accumulator;
}();
for (auto& frac : metal_fractions | std::views::values) {
frac/=sum;
}
double zsum = 0.0;
// get mass Fracs for each metal and scale it to required ztotal
for (size_t i = 0; i < species.size();++i) {
size_t Z = isotopes.atomic_numbers[i];
if (Z<=2) continue;
if (metal_fractions.contains(isotopes.elements[i])) {
double frac = 1e-2*isotopes.percentages[i]*species[i].mass();
double frac_sum = 0.0;
size_t j = i ;
while (j<species.size() && isotopes.atomic_numbers[j] == Z) {
frac_sum += 1e-2*isotopes.percentages[j]*species[j].mass();
++j;
}
// extract zfrac for the corresponding Z symbol/ isotopes.elements
double zfrac = metal_fractions.at(isotopes.elements[i]);
auto temp = ztotal*zfrac*frac/frac_sum;
massFracs.push_back(temp);
zsum += temp;
// std::println("isotope:{}",species[i].name());
}
}
// std::println("ztotal: {}, zsum:{}", ztotal, zsum);
//Renormalize
if (zsum > 0.0) {
for (size_t i = 0; i < massFracs.size();++i) {
if (isotopes.atomic_numbers[i]<=2) continue;
massFracs[i] *= ztotal/zsum;
}
}
//
Composition comp = buildCompositionFromMassFractions(species, massFracs);
return comp;
}
Composition get_composition_record(const io::SolarCompositions metal_fraction_scheme,
const io::IsotopicPercentages isotopic_percentage_scheme,
double initial_z,
double initial_y) {
return get_composition_record(
io::SolarCompositions_to_string_map.at(metal_fraction_scheme),
io::IsotopicPercentages_to_string_map.at(isotopic_percentage_scheme),
initial_z,
initial_y
);
}
}

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@@ -2,7 +2,7 @@
#include "fourdst/composition/exceptions/exceptions_composition.h"
#include "fourdst/atomic/atomicSpecies.h"
#include "fourdst/atomic/species.h"
#include "fourdst/composition/utils.h"
#include "../include/fourdst/composition/utils/utils.h"
#include "fourdst/logging/logging.h"
#include <numeric>

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@@ -4,7 +4,9 @@ required_headers = [
'fourdst/composition/composition.h',
'fourdst/composition/utils.h',
'fourdst/composition/composition_abstract.h',
'fourdst/composition/exceptions/exceptions_composition.h'
'fourdst/composition/exceptions/exceptions_composition.h',
'fourdst/composition/io/standard_compositions.h',
'fourdst/composition/io/StandardMetalFractionsBinary.h'
]
foreach h : required_headers
@@ -23,6 +25,7 @@ composition_sources = files(
'lib/composition.cpp',
'lib/utils.cpp',
'lib/decorators/composition_masked.cpp',
'lib/io/standard_compositions.cpp'
)
@@ -50,26 +53,48 @@ composition_dep = declare_dependency(
# Make headers accessible
composition_headers = files(
'include/fourdst/composition/composition.h',
'include/fourdst/composition/composition_abstract.h'
'include/fourdst/composition/composition_abstract.h',
)
install_headers(composition_headers, subdir : 'fourdst/fourdst/composition')
install_headers(composition_headers, subdir : 'fourdst/composition')
composition_headers_utils = files(
'include/fourdst/composition/utils.h',
'include/fourdst/composition/utils/utils.h',
'include/fourdst/composition/utils/composition_hash.h'
)
install_headers(composition_headers_utils, subdir : 'fourdst/fourdst/composition/utils')
install_headers(composition_headers_utils, subdir : 'fourdst/composition/utils')
composition_headers_io = files(
'include/fourdst/composition/io/standard_compositions.h',
'include/fourdst/composition/io/StandardMetalFractionsBinary.h'
)
install_headers(composition_headers_io, subdir : 'fourdst/composition/io')
composition_headers_decorators = files(
'include/fourdst/composition/decorators/composition_masked.h',
'include/fourdst/composition/decorators/composition_decorator_abstract.h',
)
install_headers(composition_headers_decorators, subdir : 'fourdst/composition/decorators')
composition_headers_atomic = files(
'include/fourdst/atomic/atomicSpecies.h',
'include/fourdst/atomic/elements.h',
'include/fourdst/atomic/species.h',
)
install_headers(composition_headers_atomic, subdir : 'fourdst/fourdst/atomic')
install_headers(composition_headers_atomic, subdir : 'fourdst/atomic')
composition_exception_headers = files(
'include/fourdst/composition/exceptions/exceptions_composition.h',
)
install_headers(composition_exception_headers, subdir : 'fourdst/fourdst/composition/exceptions')
install_headers(composition_exception_headers, subdir : 'fourdst/composition/exceptions')
composition_iterator_headers = files(
'include/fourdst/composition/iterators/composition_abstract_iterator.h',
)
install_headers(composition_iterator_headers, subdir : 'fourdst/composition/iterators')
v = meson.project_version()

10
subprojects/cli11.wrap Normal file
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@@ -0,0 +1,10 @@
[wrap-file]
directory = CLI11-2.6.1
source_url = https://github.com/CLIUtils/CLI11/archive/refs/tags/v2.6.1.tar.gz
source_filename = CLI11-2.6.1.tar.gz
source_hash = 377691f3fac2b340f12a2f79f523c780564578ba3d6eaf5238e9f35895d5ba95
source_fallback_url = https://github.com/mesonbuild/wrapdb/releases/download/cli11_2.6.1-1/CLI11-2.6.1.tar.gz
wrapdb_version = 2.6.1-1
[provide]
dependency_names = CLI11

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@@ -1,6 +1,6 @@
[wrap-git]
url = https://github.com/4D-STAR/libconfig.git
revision = v2.0.2
revision = v2.2.6
depth = 1
[provide]

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@@ -1,6 +1,6 @@
[wrap-git]
url = https://github.com/4D-STAR/libconstants.git
revision = v1.1.1
revision = v1.1.2
depth = 1
[provide]

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@@ -1,6 +1,6 @@
[wrap-git]
url = https://github.com/4D-STAR/liblogging.git
revision = v1.1.1
revision = v1.1.2
depth = 1
[provide]

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@@ -9,8 +9,9 @@
#include "fourdst/atomic/species.h"
#include "fourdst/composition/composition.h"
#include "fourdst/composition/exceptions/exceptions_composition.h"
#include "fourdst/composition/utils.h"
#include "fourdst/composition/utils/utils.h"
#include "fourdst/composition/decorators/composition_masked.h"
#include "fourdst/composition/io/standard_compositions.h"
#include "fourdst/composition/utils/composition_hash.h"
#include "fourdst/config/config.h"
@@ -482,4 +483,37 @@ TEST_F(compositionTest, iterationOrdering) {
EXPECT_EQ(sp, speciesInOrder[count]);
++count;
}
}
TEST_F(compositionTest, standardSolarCompositions) {
using namespace fourdst::composition;
std::vector<io::SolarCompositions> comps = {
io::SolarCompositions::AG89,
io::SolarCompositions::GS98,
io::SolarCompositions::L03,
io::SolarCompositions::A09_Przybilla,
io::SolarCompositions::AGS05,
io::SolarCompositions::AGSS09,
io::SolarCompositions::AAG21_photospheric,
io::SolarCompositions::MB22_photospheric,
io::SolarCompositions::L09
};
std::vector<io::IsotopicPercentages> isos = {
io::IsotopicPercentages::L03,
io::IsotopicPercentages::L09
};
for (const auto comp : comps) {
for (const auto iso: isos) {
std::string string_comp = io::SolarCompositions_to_string_map.at(comp);
std::string string_iso = io::IsotopicPercentages_to_string_map.at(iso);
EXPECT_NO_THROW((void)get_composition_record(comp, iso, 0.02, 0.28));
EXPECT_NO_THROW((void)get_composition_record(string_comp, string_iso, 0.02, 0.28));
}
}
}

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@@ -27,3 +27,5 @@ foreach test_file : test_sources
test_exe,
env: ['MESON_SOURCE_ROOT=' + meson.project_source_root(), 'MESON_BUILD_ROOT=' + meson.project_build_root()])
endforeach
subdir('sandbox')

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executable('sandbox', 'sandbox.cpp', dependencies: [species_weight_dep, composition_dep, config_dep, cli11_dep])

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#include "fourdst/composition/io/standard_compositions.h"
#include "fourdst/composition/composition.h"
#include "fourdst/atomic/species.h"
#include <string>
#include <vector>
#include <numeric>
#include <unordered_map>
#include <ranges>
#include "CLI/CLI.hpp"
int main(int argc, char** argv) {
// @input: initial_z, initial_y, metal_fraction_scheme & isotopic_percentage_scheme
// Options for metal_frac_scheme: ['AG89', 'GN93', 'GS98', 'L03', 'AGS05', 'AGSS09', 'A09_Przybilla', 'MB22_photospheric', 'AAG21_photospheric', 'L09']
// Options for isotopic percentage scheme: ['L03_data', 'L09_data']
double initial_z;
std::string metal_fraction_scheme;
auto keys = fourdst::composition::io::SolarCompositions_to_string_map | std::views::values | std::ranges::to<std::vector>();
CLI::App app("Example App To Load Solar Composition");
app.add_option("-z,--initial_z", initial_z, "Initial Z")->required();
app.add_option("-c,--metal-fraction-scheme", metal_fraction_scheme)->
check(
CLI::IsMember(
keys,
CLI::ignore_case)
);
CLI11_PARSE(app, argc, argv);
std::string isotopic_percentage_scheme;
double initial_y;
// the following four should be user input
// initial_y can be optional
initial_y = 0.24 + 2*initial_z;
isotopic_percentage_scheme = "L03_data";
fourdst::composition::Composition comp;
comp = fourdst::composition::get_composition_record(metal_fraction_scheme, isotopic_percentage_scheme, initial_z, initial_y);
std::cout << comp << std::endl;
}