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//
// Created by Alan Freitas on 2020-07-03.
//
#include <algorithm>
#include <map>
#include <matplot/backend/backend_registry.h>
#include <matplot/core/axes_type.h>
#include <matplot/core/figure_type.h>
#include <matplot/util/common.h>
#include <sstream>
namespace matplot {
figure_type::figure_type() : figure_type(1, true) {}
figure_type::figure_type(bool quiet_mode) : figure_type(1, quiet_mode) {}
figure_type::figure_type(size_t index) : figure_type(index, true) {}
figure_type::figure_type(size_t index, bool quiet_mode)
: quiet_mode_(quiet_mode), number_(index) {
#if defined(_WIN32) || defined(_WIN64) || defined(__MINGW32__) || defined(__CYGWIN__)
// On windows, Helvetica will fallback to Sans anyway
// So we avoid this warning by setting it to Sans already
font_ = "Sans";
#endif
}
#ifdef MATPLOT_BUILD_FOR_DOCUMENTATION_IMAGES
figure_type::~figure_type() { save("example.svg", "svg"); }
#else
figure_type::~figure_type() = default;
#endif
void figure_type::include_comment(const std::string &text) {
backend_->include_comment(text);
}
void figure_type::run_command(const std::string &command) {
backend_->run_command(command);
}
void figure_type::draw() {
// if there's no backend, then we use the default
if (backend_ == nullptr) {
backend_ = create_default_backend();
if (backend_ == nullptr) {
return;
}
}
// we cannot call draw if we are already drawing
// this could create infinite loops
if (is_plotting_) {
return;
}
if (!backend_->new_frame()) {
return;
}
// Avoid infinite loops if the draw function calls
// "touch" for some reason
is_plotting_ = true;
// There are two different strategies
// Gnuplot backends do not rely on vertices
// because that would be very ineficient
// So we unfortunately need a different strategy
// for gnuplot
if (!backend_->consumes_gnuplot_commands()) {
send_draw_commands();
} else {
send_gnuplot_draw_commands();
}
backend_->render_data();
is_plotting_ = false;
}
void figure_type::send_draw_commands() {
// Set title
backend_->window_title(generate_window_title());
// Draw background
backend_->draw_background(color_);
// Iterate children axes
for (const auto &ax : children_) {
ax->run_draw_commands();
}
}
void figure_type::send_gnuplot_draw_commands() {
include_comment("Setting figure properties");
run_figure_properties_command();
if (children_.empty()) {
include_comment("An empty plot");
plot_empty_plot();
} else {
include_comment("Start multiplot");
run_multiplot_command();
bool first = true;
include_comment("Window background");
if (backend_->output().empty()) {
run_window_color_command();
}
size_t index = 1;
for (auto &axes : children_) {
include_comment("Plotting axes - " + num2str(index++));
if (!first) {
include_comment(" Reset object from multiplot - " +
num2str(index - 2));
run_command(" reset");
}
axes->run_commands();
if (first) {
include_comment("Unset window background so it does repeat "
"on other subplots");
run_unset_window_color_command();
first = false;
}
}
if (children_.size() > 1) {
include_comment(
"Multiplots don't work well with the mouse in Gnuplot");
run_command("unset mouse");
}
include_comment("Finalizing the multiplot");
run_command("unset multiplot");
}
}
void figure_type::show() { backend_->show(this); }
void figure_type::touch() {
if (!quiet_mode_) {
draw();
}
}
void figure_type::flush_commands() {
// render data
backend_->render_data();
}
bool figure_type::save(const std::string &filename,
const std::string &format) {
try {
auto poutput = backend_->output();
auto pformat = backend_->output_format();
if (backend_->output(filename, format)) {
draw();
}
backend_->output(poutput, pformat);
return true;
} catch (...) {
return false;
}
}
bool figure_type::save(const std::string &filename) {
try {
auto pout = backend_->output();
auto pformat = backend_->output_format();
if (backend_->output(filename)) {
draw();
}
backend_->output(pout, pformat);
return true;
} catch (...) {
return false;
}
}
figure_type::operator bool() const { return backend_ != nullptr; }
void figure_type::plot_empty_plot() {
// Plot something out of yrange
run_command("set yrange [0:1]");
run_command("set xrange [0:1]");
run_command("set key off");
run_command("plot 2 with lines");
}
void figure_type::name(std::string_view name) {
name_ = name;
touch();
}
std::string figure_type::name() const { return name_; }
void figure_type::color(const std::array<float, 3> &c) {
color_ = {0, c[0], c[1], c[2]};
touch();
}
void figure_type::color(const color_array &c) {
color_ = c;
custom_color_ = true;
touch();
}
void figure_type::color(std::string_view c) {
color(to_array(string_to_color(c)));
}
void figure_type::color(const enum color &c) { color(to_array(c)); }
color_array figure_type::color() const { return color_; }
void figure_type::position(const std::array<unsigned, 4> &c) {
backend_->position_x(c[0]);
backend_->position_y(c[1]);
backend_->width(c[2]);
backend_->height(c[3]);
touch();
}
unsigned figure_type::x_position() const {
// get x_position from the backend because the user
// might have changed it manually by dragging the
// window
return backend_->position_x();
}
void figure_type::x_position(unsigned x) {
backend_->position_x(x);
touch();
}
unsigned figure_type::y_position() const {
// get y_position from the backend because the user
// might have changed it manually by dragging the
// window
return backend_->position_y();
}
void figure_type::y_position(unsigned y) {
backend_->position_y(y);
touch();
}
unsigned figure_type::width() const {
// get width from the backend because the user
// might have changed it manually by dragging the
// window
return backend_->width();
}
void figure_type::width(unsigned w) {
backend_->width(w);
touch();
}
unsigned figure_type::height() const {
// get height from the backend because the user
// might have changed it manually by dragging the
// window
return backend_->height();
}
void figure_type::height(unsigned h) {
backend_->height(h);
touch();
}
void figure_type::position(unsigned x, unsigned y, unsigned w, unsigned h) {
position({x, y, w, h});
}
void figure_type::position(unsigned x, unsigned y) {
backend_->position_x(x);
backend_->position_y(y);
touch();
}
void figure_type::size(unsigned w, unsigned h) {
backend_->width(w);
backend_->height(h);
touch();
}
std::array<unsigned, 4> figure_type::position() const {
return {x_position(), y_position(), width(), height()};
}
size_t figure_type::number() const { return number_; }
void figure_type::number_title(bool number_title) {
number_title_ = number_title;
touch();
}
bool figure_type::number_title() const { return number_title_; }
axes_handle figure_type::add_axes(bool replace_if_overlap) {
axes_handle h = std::make_shared<class axes_type>(this);
return this->add_axes(h, replace_if_overlap, replace_if_overlap);
}
axes_handle figure_type::add_axes(std::array<float, 4> position) {
axes_handle h = std::make_shared<class axes_type>(this, position);
h->box(true);
return this->add_axes(h, false, true);
}
axes_handle figure_type::add_axes(axes_handle h, bool replace_if_overlap,
bool replace_if_same_position) {
auto it = std::find_if(children_.begin(), children_.end(),
[&h](const auto &child) {
return child->position() == h->position();
});
if (it != children_.end()) {
if (replace_if_same_position) {
children_.erase(it);
} else {
return *it;
}
}
if (replace_if_overlap) {
// look for overlap
auto overlap = [&h](const axes_handle &x) {
const float x_min = x->x_origin();
const float x_max = x->x_origin() + x->width();
const float hx_min = h->x_origin();
const float hx_max = h->x_origin() + h->width();
const float y_min = x->y_origin();
const float y_max = x->y_origin() + x->height();
const float hy_min = h->y_origin();
const float hy_max = h->y_origin() + h->height();
// for dimensions 0 and 1, check min and max intersection
return !(x_min > hx_max || hx_min > x_max || y_min > hy_max ||
hy_min > y_max);
};
auto overlap_it =
std::remove_if(children_.begin(), children_.end(), overlap);
children_.erase(overlap_it, children_.end());
}
children_.emplace_back(h);
current_axes_ = children_.back();
current_axes_->parent(this);
touch();
return h;
}
std::array<float, 4>
figure_type::calculate_subplot_position(size_t rows, size_t cols,
size_t plot_id) {
if (plot_id >= rows * cols) {
plot_id = plot_id % (rows * cols);
}
size_t row = rows - plot_id / cols - 1;
size_t col = plot_id % cols;
constexpr size_t row_width = 1; // max(row) - min(row) + 1
constexpr size_t col_width = 1; // max(col) - min(col) + 1
const size_t min_row = row;
const size_t min_col = col;
const size_t max_row = row;
const size_t max_col = col;
float width =
axes_type::default_axes_position[2] /
(static_cast<float>(cols) - axes_type::default_subplot_inset[0] -
axes_type::default_subplot_inset[2]); // 1,0197
float height =
axes_type::default_axes_position[3] /
(static_cast<float>(rows) - axes_type::default_subplot_inset[1] -
axes_type::default_subplot_inset[3]); // 0,4738
std::array<float, 4> subplot_inset{
axes_type::default_subplot_inset[0] * width,
axes_type::default_subplot_inset[1] * height,
axes_type::default_subplot_inset[2] * width,
axes_type::default_subplot_inset[3] * height};
std::array<float, 4> outer_pos{axes_type::default_axes_position[0] +
min_col * width - subplot_inset[0],
axes_type::default_axes_position[1] +
min_row * height - subplot_inset[1],
width * col_width, height * row_width};
if (min_col == 0) {
subplot_inset[0] = axes_type::default_axes_position[0];
outer_pos[2] = outer_pos[0] + outer_pos[2];
outer_pos[0] = 0;
}
if (min_row == 0) {
subplot_inset[1] = axes_type::default_axes_position[1];
outer_pos[3] = outer_pos[1] + outer_pos[3];
outer_pos[1] = 0;
}
if (max_col == cols - 1) {
subplot_inset[2] =
std::max(0.f, 1.f - axes_type::default_axes_position[0] -
axes_type::default_axes_position[2]);
outer_pos[2] = 1 - outer_pos[0];
}
if (max_row == rows - 1) {
subplot_inset[3] =
std::max(0.f, 1.f - axes_type::default_axes_position[1] -
axes_type::default_axes_position[3]);
outer_pos[3] = 1 - outer_pos[1];
}
std::array<float, 4> position = {
outer_pos[0] + subplot_inset[0], outer_pos[1] + subplot_inset[1],
outer_pos[2] - subplot_inset[0] - subplot_inset[2],
outer_pos[3] - subplot_inset[1] - subplot_inset[3]};
return position;
}
axes_handle figure_type::add_subplot(size_t rows, size_t cols,
size_t plot_id,
bool replace_if_same_position) {
if (rows == 1 && cols == 1 && plot_id == 0) {
return add_axes();
}
return this->add_subplot(
calculate_subplot_position(rows, cols, plot_id),
replace_if_same_position);
}
axes_handle figure_type::add_subplot(size_t rows, size_t cols,
size_t plot_id, axes_handle ax) {
ax->position(calculate_subplot_position(rows, cols, plot_id));
auto it = std::find(children_.begin(), children_.end(), ax);
if (it == children_.end()) {
return add_axes(ax, true, false);
}
return ax;
}
axes_handle
figure_type::add_subplot(size_t rows, size_t cols,
std::initializer_list<size_t> positions,
bool replace_if_same_position) {
if (rows == 1 && cols == 1 && positions.size() == 1 &&
*positions.begin() == 1) {
return this->add_axes(true);
}
std::vector plot_ids = std::vector(positions);
size_t max_plot_id =
*std::max_element(plot_ids.begin(), plot_ids.end());
if (max_plot_id >= rows * cols) {
throw std::invalid_argument("Plot index is too large");
}
std::vector<size_t> row(plot_ids.size());
std::vector<size_t> col(plot_ids.size());
for (size_t i = 0; i < plot_ids.size(); ++i) {
row[i] = rows - plot_ids[i] / cols - 1;
col[i] = plot_ids[i] % cols;
}
const size_t min_row = *std::min_element(row.begin(), row.end());
const size_t min_col = *std::min_element(col.begin(), col.end());
const size_t max_row = *std::max_element(row.begin(), row.end());
const size_t max_col = *std::max_element(col.begin(), col.end());
const size_t row_width = max_row - min_row + 1;
const size_t col_width = max_col - min_col + 1;
float width =
axes_type::default_axes_position[2] /
(static_cast<float>(cols) - axes_type::default_subplot_inset[0] -
axes_type::default_subplot_inset[2]); // 1,0197
float height =
axes_type::default_axes_position[3] /
(static_cast<float>(rows) - axes_type::default_subplot_inset[1] -
axes_type::default_subplot_inset[3]); // 0,4738
std::array<float, 4> subplot_inset{
axes_type::default_subplot_inset[0] * width,
axes_type::default_subplot_inset[1] * height,
axes_type::default_subplot_inset[2] * width,
axes_type::default_subplot_inset[3] * height};
std::array<float, 4> outer_pos{axes_type::default_axes_position[0] +
min_col * width - subplot_inset[0],
axes_type::default_axes_position[1] +
min_row * height - subplot_inset[1],
width * col_width, height * row_width};
if (min_col == 0) {
subplot_inset[0] = axes_type::default_axes_position[0];
outer_pos[2] = outer_pos[0] + outer_pos[2];
outer_pos[0] = 0;
}
if (min_row == 0) {
subplot_inset[1] = axes_type::default_axes_position[1];
outer_pos[3] = outer_pos[1] + outer_pos[3];
outer_pos[1] = 0;
}
if (max_col == cols - 1) {
subplot_inset[2] =
std::max(0.f, 1.f - axes_type::default_axes_position[0] -
axes_type::default_axes_position[2]);
outer_pos[2] = 1 - outer_pos[0];
}
if (max_row == rows - 1) {
subplot_inset[3] =
std::max(0.f, 1.f - axes_type::default_axes_position[1] -
axes_type::default_axes_position[3]);
outer_pos[3] = 1 - outer_pos[1];
}
std::array<float, 4> position = {
outer_pos[0] + subplot_inset[0], outer_pos[1] + subplot_inset[1],
outer_pos[2] - subplot_inset[0] - subplot_inset[2],
outer_pos[3] - subplot_inset[1] - subplot_inset[3]};
return this->add_subplot(position, replace_if_same_position);
}
axes_handle figure_type::add_subplot(std::array<float, 4> position,
bool replace_if_same_position) {
axes_handle h = std::make_shared<class axes_type>(this, position);
h->box(true);
return this->add_axes(h, true, replace_if_same_position);
}
void figure_type::tiledlayout(size_t rows, size_t cols) {
tiledlayout_rows_ = rows;
tiledlayout_cols_ = cols;
current_tile_index_ = 0;
tiledlayout_flow_ = rows == 1 && cols == 1;
children_.clear();
}
axes_handle figure_type::nexttile() {
const bool next_tile_fits =
current_tile_index_ < tiledlayout_rows_ * tiledlayout_cols_;
if (next_tile_fits || !tiledlayout_flow_) {
if (!next_tile_fits) {
current_tile_index_ -= tiledlayout_rows_ * tiledlayout_cols_;
}
axes_handle h = this->add_subplot(
tiledlayout_rows_, tiledlayout_cols_, current_tile_index_);
current_tile_index_++;
return h;
} else {
if (tiledlayout_rows_ <= tiledlayout_cols_) {
++tiledlayout_rows_;
} else {
++tiledlayout_cols_;
}
// reposition existing axes, assuming they are all independent tiles
for (size_t j = 0; j < children_.size(); ++j) {
auto p = calculate_subplot_position(tiledlayout_rows_,
tiledlayout_cols_, j);
children_[j]->position(p);
}
return nexttile();
}
}
axes_handle figure_type::nexttile(size_t index) {
current_tile_index_ = index;
return nexttile();
}
axes_handle figure_type::current_axes() {
axes_handle h = current_axes_;
if (!h) {
h = this->add_axes();
}
return h;
}
axes_handle figure_type::current_axes() const { return current_axes_; }
void figure_type::current_axes(const axes_handle ¤t_axes) {
current_axes_ = current_axes;
// bring axes to front
auto it = std::find(children_.begin(), children_.end(), current_axes);
if (it != children_.end()) {
if (*it != children_.back()) {
std::swap(*it, children_.back());
touch();
}
}
}
void figure_type::run_figure_properties_command() {
run_command("reset");
run_terminal_init_command();
if (children_.empty()) {
run_command("unset border");
run_command("unset xtics");
run_command("unset ytics");
}
if (children_.empty()) {
run_window_color_command();
}
}
std::string figure_type::generate_window_title() const {
std::string title;
if (number_title_) {
title += "Figure " + num2str(number_);
if (!name_.empty()) {
title += ": " + name_;
}
} else {
title = name_;
}
return title;
}
void figure_type::run_terminal_init_command() {
std::stringstream ss;
auto &terminal = backend_->output_format();
ss << "set terminal " + terminal;
if (!terminal.empty() &&
backend::gnuplot::terminal_has_title_option(terminal)) {
ss << " title \"" << generate_window_title() << "\"";
run_command(ss.str());
}
if (backend::gnuplot::terminal_has_size_option(terminal)) {
ss << " size " << num2str(width()) << "," << num2str(height());
}
if (backend::gnuplot::terminal_has_enhanced_option(terminal)) {
ss << " enhanced";
}
if (backend::gnuplot::terminal_has_color_option(terminal)) {
ss << " color";
}
if (backend::gnuplot::terminal_has_font_option(terminal)) {
ss << " font \"" + escape(font_) + "," +
num2str(unsigned(font_size_)) + "\"";
}
run_command(ss.str());
const auto &output = backend_->output();
if (!output.empty()) {
run_command("set output \"" + escape(output) + "\"");
}
}
void figure_type::run_window_color_command() {
// In gnuplot 5.5 we have the wall function to set the axes color
// with a rectangle workaround, which does not work well for 3d.
const bool has_wall_option = backend::gnuplot::gnuplot_has_wall_option();
// So we only plot the default background if it's not 3d or version is
// higher than 5.5. Otherwise, gnuplot won't be able to set the axes
// colors.
const bool three_d_is_not_a_problem =
children_.empty() || !children_[0]->is_3d() ||
children_[0]->is_3d_map() || has_wall_option;
// If the background is custom, we plot it, but
// gnuplot will not be able to plot the axes background if it's 3d and
// its version is less than 5.5. It's the user's choice then.
const bool force_background_anyway = custom_color_;
if (title_.empty()) {
if (three_d_is_not_a_problem || force_background_anyway) {
if (to_array(color::white) != color_) {
run_command("set object 1 rectangle from screen 0,0 to "
"screen 1,1 behind fillcolor rgb \"" +
to_string(color_) +
"\" fillstyle solid 1.0 noborder");
}
}
}
}
void figure_type::run_unset_window_color_command() {
if (custom_color_ || children_.empty() || !children_[0]->is_3d() ||
children_[0]->is_3d_map()) {
if (to_array(color::white) != color_) {
run_command("unset object 1");
}
}
}
void figure_type::run_multiplot_command() {
std::string cmd = "set multiplot";
if (!title_.empty()) {
cmd += " title \"{/:Bold " + escape(title_) + "}\"";
cmd += " font '" + font_ + "," +
num2str(unsigned(font_size_ * title_font_size_multiplier_)) +
"'";
cmd += " textcolor '" + to_string(title_color_) + "'";
}
run_command(cmd);
}
const std::string &figure_type::font() const { return font_; }
void figure_type::font(std::string_view font) {
font_ = font;
touch();
}
float figure_type::font_size() const { return font_size_; }
void figure_type::font_size(float font_size) {
font_size_ = font_size;
touch();
}
const std::string &figure_type::title() const { return title_; }
void figure_type::title(std::string_view title) {
title_ = title;
touch();
}
const color_array &figure_type::title_color() const { return title_color_; }
void figure_type::title_color(const color_array &title_color) {
title_color_ = title_color;
touch();
}
float figure_type::title_font_size_multiplier() const {
return title_font_size_multiplier_;
}
void
figure_type::title_font_size_multiplier(float title_font_size_multiplier) {
title_font_size_multiplier_ = title_font_size_multiplier;
touch();
}
bool figure_type::custom_color() const { return custom_color_; }
void figure_type::custom_color(bool custom_color) {
custom_color_ = custom_color;
touch();
}
bool figure_type::quiet_mode() const { return quiet_mode_; }
void figure_type::quiet_mode(bool quiet_mode) { quiet_mode_ = quiet_mode; }
bool figure_type::reactive_mode() const { return !quiet_mode_; }
void figure_type::reactive_mode(bool reactive_mode) {
quiet_mode_ = !reactive_mode;
}
void figure_type::ion() { quiet_mode_ = false; }
void figure_type::ioff() { quiet_mode_ = true; }
const std::vector<std::shared_ptr<class axes_type>> &
figure_type::children() const {
return children_;
}
void figure_type::children(
const std::vector<std::shared_ptr<class axes_type>> &children) {
children_ = children;
}
std::tuple<std::vector<std::vector<scatter_handle>>,
std::vector<histogram_handle>,
std::vector<std::vector<axes_handle>>>
figure_type::plotmatrix(const std::vector<std::vector<double>> &X,
const std::vector<std::vector<double>> &Y,
std::string_view line_spec,
bool histogram_on_diagonals) {
bool p = this->quiet_mode();
this->quiet_mode(true);
// data
size_t n_rows = X.size();
size_t n_cols = Y.size();
// results
std::vector<std::vector<scatter_handle>> S(
n_rows, std::vector<scatter_handle>(n_cols, nullptr));
std::vector<histogram_handle> H(n_cols);
// get min/max to adjust axes
// adjust x-y ranges
std::vector<double> X_min(X.size());
std::vector<double> X_max(X.size());
for (size_t i = 0; i < X.size(); ++i) {
auto [xmin_it, xmax_it] =
std::minmax_element(X[i].begin(), X[i].end());
X_min[i] = *xmin_it;
X_max[i] = *xmax_it;
}
std::vector<double> Y_min(Y.size());
std::vector<double> Y_max(Y.size());
for (size_t i = 0; i < Y.size(); ++i) {
auto [ymin_it, ymax_it] =
std::minmax_element(Y[i].begin(), Y[i].end());
Y_min[i] = *ymin_it;
Y_max[i] = *ymax_it;
}
// create scatter plots and histograms
std::vector<std::vector<axes_handle>> axs(
n_rows, std::vector<axes_handle>(n_cols, nullptr));
for (size_t i = 0; i < n_rows; ++i) {
for (size_t j = 0; j < n_cols; ++j) {
axs[i][j] = this->add_subplot(n_rows, n_cols, i * n_rows + j);
if (i != j || !histogram_on_diagonals) {
scatter_handle s = axs[i][j]->scatter(X[j], Y[i]);
S[i][j] = s;
s->line_style(line_spec);
// set limits
axs[i][j]->x_axis().limits({X_min[i], X_max[i]});
axs[i][j]->y_axis().limits({Y_min[j], Y_max[j]});
} else {
histogram_handle h = axs[i][j]->hist(X[i]);
H[i] = h;
// set limits
// we let the Y axis be defined automatically because
// it is in a different range from the other Y axes
axs[i][j]->x_axis().limits({X_min[i], X_max[i]});
}
if (i != n_rows - 1) {
axs[i][j]->xticks({});
}
if (j != 0) {
axs[i][j]->yticks({});
}
if (histogram_on_diagonals) {
if (i % 2 == 0) {
if (j == 0) {
axs[i][j]->y_axis().visible(false);
} else if (j == n_cols - 1) {
axs[i][j]->y2_axis().visible(true);
}
}
if (j % 2 == 1) {
if (i == 0) {
axs[i][j]->x2_axis().visible(true);
} else if (i == n_rows - 1) {
axs[i][j]->x_axis().visible(false);
}
}
if (n_rows % 2 == 1 && i == n_rows - 1) {
if (j == 0) {
axs[i][j]->y_axis().visible(true);
} else if (j == n_cols - 1) {
axs[i][j]->y2_axis().visible(false);
}
}
}
}
}
// get limits from the histograms and use the more extreme limit
if (histogram_on_diagonals) {
std::vector<double> H_min(X.size());
std::vector<double> H_max(X.size());
for (size_t i = 0; i < X.size(); ++i) {
histogram_handle h = std::dynamic_pointer_cast<histogram>(
*axs[0][0]->children().begin());
H_min[i] = *h->bin_edges().begin();
H_max[i] = *std::prev(h->bin_edges().end());
}
for (size_t i = 0; i < axs.size(); ++i) {
for (size_t j = 0; j < axs.size(); ++j) {
axs[i][j]->x_axis().limits({std::min(X_min[j], H_min[j]),
std::max(X_max[j], H_max[j])});
}
}
}
// compact subplots
float l_margin = axs[0][0]->x_origin();
float r_margin =
1.f - axs[0][n_cols - 1]->y_origin() - axs[0][n_cols - 1]->width();
float b_margin = axs[n_rows - 1][0]->y_origin();
float t_margin = 1.f - axs[0][0]->y_origin() - axs[0][0]->height();
float subplot_width = (1.f - l_margin - r_margin) / n_cols;
float subplot_height = (1.f - t_margin - b_margin) / n_rows;
for (size_t i = 0; i < n_rows; ++i) {
for (size_t j = 0; j < n_cols; ++j) {
axs[i][j]->width(subplot_width - 0.01f);
axs[i][j]->height(subplot_height - 0.01f);
axs[i][j]->x_origin(l_margin + subplot_width * j);
axs[i][j]->y_origin(1.f - t_margin - subplot_height -
subplot_height * i);
}
}
this->quiet_mode(p);
if (!p) {
this->draw();
}
return std::make_tuple(S, H, axs);
}
const std::shared_ptr<backend::backend_interface> &
figure_type::backend() const {
return backend_;
}
void figure_type::backend(
const std::shared_ptr<backend::backend_interface> &new_backend) {
backend_ = new_backend;
}
bool figure_type::should_close() { return backend_->should_close(); }
} // namespace matplot