From 6739019c83b429041027f025fcd181bf80f21b09 Mon Sep 17 00:00:00 2001
From: Antonin Portelli <antonin.portelli@me.com>
Date: Fri, 12 Jan 2024 14:22:23 +0100
Subject: [PATCH] log scale basis in plots

---
 lib/Core/Plot.cpp | 10 ++++++----
 lib/Core/Plot.hpp |  4 +++-
 2 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/lib/Core/Plot.cpp b/lib/Core/Plot.cpp
index a696be6..8377e90 100644
--- a/lib/Core/Plot.cpp
+++ b/lib/Core/Plot.cpp
@@ -515,14 +515,16 @@ void Dash::operator()(PlotOptions &option) const
 }
 
 // LogScale constructor ////////////////////////////////////////////////////////
-LogScale::LogScale(const Axis axis)
+LogScale::LogScale(const Axis axis, const double basis)
 : axis_(axis)
+, basis_(basis)
 {}
 
 // Logscale modifier ///////////////////////////////////////////////////////////
 void LogScale::operator()(PlotOptions &option) const
 {
-    option.scaleMode[static_cast<int>(axis_)] |= Plot::Scale::log;
+    option.scaleMode[static_cast<int>(axis_)]     |= Plot::Scale::log;
+    option.logScaleBasis[static_cast<int>(axis_)]  = basis_;
 }
 
 // PlotRange constructors //////////////////////////////////////////////////////
@@ -915,11 +917,11 @@ ostream & Latan::operator<<(ostream &out, const Plot &plot)
     out << "unset log" << endl;
     if (plot.options_.scaleMode[x] & Plot::Scale::log)
     {
-        out << "set log x" << endl;
+        out << "set log x " << plot.options_.logScaleBasis[x] << endl;;
     }
     if (plot.options_.scaleMode[y] & Plot::Scale::log)
     {
-        out << "set log y" << endl;
+        out << "set log y " << plot.options_.logScaleBasis[y] << endl;
     }
     if (!plot.options_.label[x].empty())
     {
diff --git a/lib/Core/Plot.hpp b/lib/Core/Plot.hpp
index af3a6b4..eed57a6 100644
--- a/lib/Core/Plot.hpp
+++ b/lib/Core/Plot.hpp
@@ -227,6 +227,7 @@ struct PlotOptions
     std::string              caption;
     std::string              title;
     unsigned int             scaleMode[2];
+    double                   logScaleBasis[2];
     Range                    scale[2];
     std::string              label[2];
     std::string              lineColor;
@@ -314,13 +315,14 @@ class LogScale: public PlotModifier
 {
 public:
     // constructor
-    explicit LogScale(const Axis axis);
+    explicit LogScale(const Axis axis, const double basis = 10);
     // destructor
     virtual ~LogScale(void) = default;
     // modifier
     virtual void operator()(PlotOptions &option) const;
 private:
     const Axis axis_;
+    const double basis_;
 };
 
 class PlotRange: public PlotModifier