From 2e2ec4a4121b1fa12754b9f3393b804710161597 Mon Sep 17 00:00:00 2001
From: Patrick Shriwise <pshriwise@gmail.com>
Date: Mon, 18 Mar 2019 14:47:44 -0500
Subject: [PATCH] Addressing narrowing warning.

---
 include/openmc/plot.h | 6 +++---
 src/plot.cpp          | 8 +++++---
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/include/openmc/plot.h b/include/openmc/plot.h
index 91ac9ec20..12f5cfab9 100644
--- a/include/openmc/plot.h
+++ b/include/openmc/plot.h
@@ -57,7 +57,7 @@ typedef xt::xtensor<RGBColor, 2> ImageData;
 
 struct IdData {
   // Constructor
-  IdData(int h_res, int v_res);
+  IdData(size_t h_res, size_t v_res);
 
   // Methods
   void set_value(int y, int x, const Particle& p, int level);
@@ -68,7 +68,7 @@ struct IdData {
 
 struct PropertyData {
   // Constructor
-  PropertyData(int h_res, int v_res);
+  PropertyData(size_t h_res, size_t v_res);
 
   // Methods
   void set_value(int y, int x, const Particle& p, int level);
@@ -105,7 +105,7 @@ public:
   Position origin_; //!< Plot origin in geometry
   Position width_; //!< Plot width in geometry
   PlotBasis basis_; //!< Plot basis (XY/XZ/YZ)
-  std::array<int, 3> pixels_; //!< Plot size in pixels
+  std::array<size_t, 3> pixels_; //!< Plot size in pixels
   int level_; //!< Plot universe level
 };
 
diff --git a/src/plot.cpp b/src/plot.cpp
index 0d43d1b8d..ba769d611 100644
--- a/src/plot.cpp
+++ b/src/plot.cpp
@@ -31,7 +31,7 @@ const RGBColor WHITE {255, 255, 255};
 constexpr int PLOT_LEVEL_LOWEST {-1}; //!< lower bound on plot universe level
 constexpr int32_t NOT_FOUND {-2};
 
-IdData::IdData(int h_res, int v_res)
+IdData::IdData(size_t h_res, size_t v_res)
   : data_({v_res, h_res, 2}, NOT_FOUND)
 { }
 
@@ -48,7 +48,7 @@ IdData::set_value(int y, int x, const Particle& p, int level) {
   }
 }
 
-PropertyData::PropertyData(int h_res, int v_res)
+PropertyData::PropertyData(size_t h_res, size_t v_res)
   : data_({v_res, h_res, 2}, NOT_FOUND)
 { }
 
@@ -807,7 +807,9 @@ void create_voxel(Plot pl)
   // Write current date and time
   write_attribute(file_id, "date_and_time", time_stamp().c_str());
   hsize_t three = 3;
-  write_attribute(file_id, "num_voxels", pl.pixels_);
+  std::array<int, 3> pixels;
+  std::copy(pl.pixels_.begin(), pl.pixels_.end(), pixels.begin());
+  write_attribute(file_id, "num_voxels", pixels);
   write_attribute(file_id, "voxel_width", vox);
   write_attribute(file_id, "lower_left", ll);