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diff --git a/modules/graphics/includes/PloEch.h b/modules/graphics/includes/PloEch.h
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+++ b/modules/graphics/includes/PloEch.h
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+/*
+ * Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
+ * Copyright (C) 1998 - 2000 - ENPC - Jean-Philipe Chancelier
+ * Copyright (C) 2006 - INRIA - Jean-Baptiste Silvy
+ *
+ * This file must be used under the terms of the CeCILL.
+ * This source file is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution.  The terms
+ * are also available at
+ * http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.txt
+ *
+ */
+
+/*------------------------------------------------------------------------
+ *    Graphic library
+ * --------------------------------------------------------------------------*/
+#ifndef _SCI_ECH
+#define _SCI_ECH
+
+#include "dynlib_graphics.h"
+
+GRAPHICS_IMPEXP void convertUserCoordToPixelCoords(const double xCoords[], const double yCoords[],
+        int xPixCoords[], int yPixCoords[], int nbCoords,
+        int rect[4]);
+
+GRAPHICS_IMPEXP void convertPixelCoordsToUserCoords(const int xPixCoords[], const int yPixCoords[],
+        double xUserCoords[], double yUserCoords[], int nbCoords,
+        int rect[4]);
+
+GRAPHICS_IMPEXP void compute_data_bounds2(int cflag, char dataflag, char * logflags, double *x, double  *y, int n1, int n2, double *drect);
+
+GRAPHICS_IMPEXP BOOL update_specification_bounds(int iSubwinUID, double rect[6], int flag);
+
+
+#endif  /* _SCI_ECH */
+
+
+
+
+
+