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#ifndef OUTPUT_TIKZ_H
#define OUTPUT_TIKZ_H
#include <vector>
#include <string>
#include <algorithm>
#include <fstream>
#include <cmath>
typedef double FT;
//////////////////AUX/////////////////////
void write_preamble(std::ofstream& ofs)
{
ofs << "\\documentclass{standalone}\n"
<< "\\usepackage{tikz}\n\n"
<< "\\begin{document}\n"
<< "\\begin{tikzpicture}\n";
}
void write_end(std::ofstream& ofs)
{
ofs << "\\end{tikzpicture}\n"
<< "\\end{document}";
}
/////////////////MAIN//////////////////////
void write_tikz_plot(std::vector<FT> data, std::string filename)
{
int n = data.size();
FT vmax = *(std::max_element(data.begin(), data.end()));
//std::cout << std::log10(vmax) << " " << std::floor(std::log10(vmax));
FT order10 = pow(10,std::floor(std::log10(vmax)));
int digit = std::floor( vmax / order10) + 1;
if (digit == 4 || digit == 6) digit = 5;
if (digit > 6) digit = 10;
FT plot_max = digit*order10;
std::cout << plot_max << " " << vmax;
FT hstep = 10.0/(n-1);
FT wstep = 10.0 / plot_max;
std::cout << "(eps_max-eps_min)/(N-48) = " << (vmax-*data.begin())/(data.size()-48) << "\n";
std::ofstream ofs(filename, std::ofstream::out);
ofs <<
"\\documentclass{standalone}\n" <<
"\\usepackage[utf8]{inputenc}\n" <<
"\\usepackage{amsmath}\n" <<
"\\usepackage{tikz}\n\n" <<
"\\begin{document}\n" <<
"\\begin{tikzpicture}\n";
ofs << "\\draw[->] (0,0) -- (0,11);" << std::endl <<
"\\draw[->] (0,0) -- (11,0);" << std::endl <<
"\\foreach \\i in {1,...,10}" << std::endl <<
"\\draw (0,\\i) -- (-0.05,\\i);" << std::endl <<
"\\foreach \\i in {1,...,10}" << std::endl <<
"\\draw (\\i,0) -- (\\i,-0.05);" << std::endl << std::endl <<
"\\foreach \\i in {1,...,10}" << std::endl <<
"\\draw[dashed] (-0.05,\\i) -- (11,\\i);" << std::endl << std::endl <<
"\\node at (-0.5,11) {$*$}; " << std::endl <<
"\\node at (11,-0.5) {$*$}; " << std::endl <<
"\\node at (-0.5,-0.5) {0}; " << std::endl <<
"\\node at (-0.5,10) {" << plot_max << "}; " << std::endl <<
"%\\node at (10,-0.5) {2}; " << std::endl;
ofs << "\\draw[red] (0," << wstep*data[0] << ")";
for (int i = 1; i < n; ++i)
ofs << " -- (" << hstep*i << "," << wstep*data[i] << ")";
ofs << ";\n";
ofs <<
"\\end{tikzpicture}\n" <<
"\\end{document}";
ofs.close();
}
// A little script to make a tikz histogram of epsilon distribution
// Returns the average epsilon
void write_histogram(std::vector<double> histo, std::string file_name = "histogram.tikz", std::string xaxis = "$\\epsilon/\\epsilon_{max}$", std::string yaxis = "$\\epsilon$", FT max_x = 1)
{
int n = histo.size();
std::ofstream ofs (file_name, std::ofstream::out);
FT barwidth = 20.0/n;
FT max_value = *(std::max_element(histo.begin(), histo.end()));
std::cout << max_value << std::endl;
FT ten_power = pow(10, ceil(log10(max_value)));
FT max_histo = ten_power;
if (max_value/ten_power > 1) {
if (max_value/ten_power < 2)
max_histo = 0.2*ten_power;
else if (max_value/ten_power < 5)
max_histo = 0.5*ten_power;
}
std::cout << ceil(log10(max_value)) << std::endl << max_histo << std::endl;
FT unitht = max_histo/10.0;
write_preamble(ofs);
ofs << "\\draw[->] (0,0) -- (0,11);\n" <<
"\\draw[->] (0,0) -- (21,0);\n" <<
"\\foreach \\i in {1,...,10}\n" <<
"\\draw (0,\\i) -- (-0.1,\\i);\n" <<
"\\foreach \\i in {1,...,20}\n" <<
"\\draw (\\i,0) -- (\\i,-0.1);\n" <<
"\\node at (-1,11) {" << yaxis << "};\n" <<
"\\node at (22,-1) {" << xaxis << "};\n" <<
"\\node at (-0.5,-0.5) {0};\n" <<
"\\node at (-0.5,10) {" << max_histo << "};\n" <<
"\\node at (20,-0.5) {" << max_x << "};\n";
for (int i = 0; i < n; ++i)
ofs << "\\draw (" << barwidth*i << "," << histo[i]/unitht << ") -- ("
<< barwidth*(i+1) << "," << histo[i]/unitht << ") -- ("
<< barwidth*(i+1) << ",0) -- (" << barwidth*i << ",0) -- cycle;\n";
write_end(ofs);
ofs.close();
}
struct Pers_interval {
double alpha_start, alpha_end;
int dim;
Pers_interval(double alpha_start_, double alpha_end_, int dim_)
: alpha_start(alpha_start_), alpha_end(alpha_end_), dim(dim_)
{}
};
void write_barcodes(std::string in_file, double alpha2, std::string out_file = "barcodes.tikz.tex")
{
std::ifstream ifs(in_file, std::ios::in);
std::string line;
std::vector<Pers_interval> pers_intervals;
while (getline(ifs, line)) {
int p, dim;
double alpha_start, alpha_end;
std::istringstream iss(line);
iss >> p >> dim >> alpha_start >> alpha_end;
if (alpha_start != alpha_end) {
if (alpha_end < alpha_start)
alpha_end = alpha2;
pers_intervals.push_back(Pers_interval(alpha_start, alpha_end, dim));
}
}
ifs.close();
std::ofstream ofs (out_file, std::ofstream::out);
write_preamble(ofs);
double barwidth = 0.01;
int i = 0;
for (auto interval: pers_intervals) {
std::string color = "black";
switch (interval.dim) {
case 0: color = "orange"; break;
case 1: color = "red"; break;
case 2: color = "blue"; break;
case 3: color = "green"; break;
case 4: color = "yellow"; break;
default: color = "orange"; break;
}
ofs << "\\fill[" << color << "] (" << interval.alpha_start << "," << barwidth*i << ") rectangle ("
<< interval.alpha_end << "," << barwidth*(i+1) <<");\n";
i++;
}
write_end(ofs);
ofs.close();
}
#endif
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