// get styles we would plot if this were a normal line

std::vector<line_spec::style_to_plot> result = line::styles_to_plot();

// unlike in line, we cannot plot line and marker together

// replace plot_line_and_marker with line and marker, if not there

auto it = std::find(result.begin(), result.end(),

line_spec::style_to_plot::plot_line_and_marker);

if (it != result.end()) {

result.erase(it);

result.emplace_back(line_spec::style_to_plot::plot_line_only);

result.emplace_back(line_spec::style_to_plot::plot_marker_only);

// we need to sort it to make sure line comes before marker and

// marker before marker face

std::sort(result.begin(), result.end());

}

return result;

line::maybe_update_line_spec();

std::string res;

bool first = true;

for (const auto &style : styles_to_plot()) {

if (!first) {

res += ",";

}

if (style == line_spec::style_to_plot::plot_line_only) {

// replace lines with steps, according to style

switch (stair_style_) {

case stair_style::trace_x_first:

res += " '-' with steps " +

line_spec_.plot_string(style, false);

break;

case stair_style::trace_y_first:

res += " '-' with fsteps " +

line_spec_.plot_string(style, false);

break;

case stair_style::histogram:

res += " '-' with histeps " +

line_spec_.plot_string(style, false);

break;

case stair_style::fill:

res += " '-' with fillsteps fillstyle solid 0.25 fillcolor "

"\"" +

to_string(line_spec_.color()) + "\"";

break;

}

} else {

// plot markers the same way

res += " '-' " + line_spec_.plot_string(style);

}

if (first) {

first = false;

}

}

return res;